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24943560
|
10.1007/JHEP09(2013)159
|
We examine the interplay between gravitational collapse and moduli stability
in the context of black hole formation. We perform numerical simulations of the
collapse using the double null formalism and show that the very dense regions
one expects to find in the process of black hole formation are able to
destabilize the volume modulus. We establish that the effects of the
destabilization will be visible to an observer at infinity, opening up a window
to a region in spacetime where standard model's couplings and masses can differ
significantly from their background values.Comment: 21 pages, 9 figure
|
Moduli destabilization via gravitational collapse
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moduli destabilization via gravitational collapse
|
examine interplay gravitational collapse moduli formation. collapse formalism dense expects destabilize modulus. establish destabilization visible observer infinity opening window spacetime couplings pages
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non_dup
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[] |
25026645
|
10.1007/JHEP09(2014)007
|
We present accurate predictions for the inclusive production of a Higgs boson
in proton-proton collisions, via gluon-gluon fusion. Our calculation includes
next-to-next-to-leading order (NNLO) corrections in perturbative QCD, as well
as the resummation of threshold-enhanced contributions to
next-to-next-to-next-to-leading logarithmic (N$^3$LL) accuracy, with the
inclusion of the recently-determined three-loop constant coefficient (sometimes
referred to as N$^3$LL' accuracy).
Our result correctly accounts for finite top, bottom and charm masses at
leading order (LO) and next-to-leading order (NLO), and includes top mass
dependence at NNLO. At the resummed level the dependence on top, bottom and
charm mass is accounted for at NLL, while only the top mass at NNLL. The
all-order calculation is improved by a suitable choice of the soft terms,
dictated by analyticity conditions and by the inclusion of subleading
corrections of collinear origin, which improve the accuracy of the resummation
away from the threshold region.
We present results for different collider energies and we study perturbative
uncertainties by varying renormalization and factorization scales. We find
that, at current LHC energies, the resummation corrects the NNLO result by as
much as 20 % at $\mu_R=\mu_F=m_H$, while the correction is much smaller, 5.5 %,
at $\mu_R=\mu_F=m_H /\,2$. While the central value of NNLO+N$^3$LL result
depends very mildly on the scale choice, we argue that a more reliable estimate
of the theoretical uncertainty is found if the perturbative scales are
canonically varied about $m_H$.Comment: 21 pages, 8 figures. Added a figure with quantitative comparisons
between different resummations. Version to be published in JHE
|
Resummed Higgs cross section at N$^3$LL
|
resummed higgs cross section at n$^3$ll
|
inclusive boson proton proton collisions gluon gluon fusion. nnlo perturbative resummation logarithmic inclusion sometimes referred correctly accounts charm nnlo. resummed charm accounted nnll. dictated analyticity inclusion subleading collinear resummation away region. collider perturbative renormalization factorization scales. resummation corrects nnlo nnlo mildly argue reliable perturbative canonically varied .comment pages figures. comparisons resummations.
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non_dup
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[] |
25039164
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10.1007/JHEP09(2014)010
|
We consider entanglement negativity for two disjoint intervals in 1+1
dimensional CFT in the limit of large central charge. As the two intervals get
close, the leading behavior of negativity is given by the logarithm of the
conformal block where a set of approximately null descendants appears in the
intermediate channel. We compute this quantity numerically and compare with
existing analytic methods which provide perturbative expansion in powers of the
cross-ratio.Comment: harvmac, 30 pages, 2 figures, references added, accepted for
publication in JHE
|
Conformal Blocks and Negativity at Large Central Charge
|
conformal blocks and negativity at large central charge
|
entanglement negativity disjoint intervals charge. intervals negativity logarithm conformal descendants channel. quantity numerically analytic perturbative powers harvmac pages publication
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non_dup
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[] |
24978387
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10.1007/JHEP09(2014)013
|
We study Majorana neutrino mass matrices that have two texture zeros, or two
cofactor zeros, or one texture zero and one cofactor zero. The two
texture/cofactor zero conditions give four constraints, which in conjunction
with the five measured oscillation parameters completely determine the nine
independent real parameters of the neutrino mass matrix. We also study the
implications that future measurements of neutrinoless double beta decay and the
Dirac CP phase will have on these cases.Comment: 25 pages, 8 tables, 11 figures. Version to appear in JHE
|
Texture and Cofactor Zeros of the Neutrino Mass Matrix
|
texture and cofactor zeros of the neutrino mass matrix
|
majorana texture zeros cofactor zeros texture cofactor zero. texture cofactor conjunction oscillation nine matrix. neutrinoless beta dirac pages tables figures.
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non_dup
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[] |
35082630
|
10.1007/JHEP09(2014)020
|
In this paper, we calculate corrections of scalar perturbations spectra resulting from excited-de Sitter modes as the nontrivial initial states. To obtain these modes, we consider the asymptotic expansion of the Hankel functions up to the higher order of 1 kτ $$ \frac{1}{k\tau} $$ . Actually the Planck and WMAP data impose some constrains on the Hankel function index. These observational constraints and back-reaction effects stimulate us to use excited-de Sitter modes. Finally, we nominate these nontrivial general solutions as the fundamental mode functions during inflation and we calculate the corrected form of scale-dependent power spectrum with trans-Planckian corrections, and in de Sitter space-time limit the results reduce to the scale-invariant power spectrum
|
Scale-dependent power spectrum from initial excited-de Sitter modes
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scale-dependent power spectrum from initial excited-de sitter modes
|
perturbations excited sitter nontrivial states. asymptotic hankel frac planck wmap impose constrains hankel index. observational stimulate excited sitter modes. nominate nontrivial inflation corrected planckian sitter
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non_dup
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[] |
25045219
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10.1007/JHEP09(2014)023
|
The partition function of Euclidean Yang-Mills theory on two dimensional
surfaces is given by the Migdal formula. It involves the area and topological
characteristics of the surface. We consider this theory on a class of infinite
genus surfaces that are constructed recursively. We make use of this recursive
structure to compute the partition functions (with or without additional Wilson
loops) on such surfaces. Our method also works for the quantum deformed
Yang-Mills theory.Comment: 1+7 pages, 2 figure
|
Two-dimensional Yang-Mills Theory on Recursive Infinite Genus Surfaces
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two-dimensional yang-mills theory on recursive infinite genus surfaces
|
partition euclidean mills migdal formula. involves topological surface. infinite genus recursively. recursive partition wilson loops surfaces. deformed mills pages
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non_dup
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[] |
35082548
|
10.1007/JHEP09(2014)032
|
We investigate the relationship between conformal and spin structure on lorentzian manifolds and see how their compatibility influences the formulation of rigid supersymmetric field theories. In dimensions three, four, six and ten, we show that if the Dirac current associated with a generic spinor defines a null conformal Killing vector then the spinor must obey a twistor equation with respect to a certain connection with torsion. Of the theories we consider, those with classical superconformal symmetry in Minkowski space can be reformulated as rigid supersymmetric theories on any lorentzian manifold admitting twistor spinors. In dimensions six and ten, we also describe rigid supersymmetric gauge theories on bosonic minimally supersymmetric supergravity backgrounds
|
Rigid supersymmetry, conformal coupling and twistor spinors
|
rigid supersymmetry, conformal coupling and twistor spinors
|
conformal lorentzian manifolds compatibility influences formulation rigid supersymmetric theories. dirac generic spinor defines conformal killing spinor obey twistor connection torsion. superconformal minkowski reformulated rigid supersymmetric lorentzian manifold admitting twistor spinors. rigid supersymmetric bosonic minimally supersymmetric supergravity backgrounds
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non_dup
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[] |
35082547
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10.1007/JHEP09(2014)033
|
Assuming that neutrinos are Majorana particles, we perform a complete classification of all possible mixing matrices which are fully determined by residual symmetries in the charged-lepton and neutrino mass matrices. The classification is based on the assumption that the residual symmetries originate from a finite flavour symmetry group. The mathematical tools which allow us to accomplish this classification are theorems on sums of roots of unity. We find 17 sporadic cases plus one infinite series of mixing matrices associated with three-flavour mixing, all of which have already been discussed in the literature. Only the infinite series contains mixing matrices which are compatible with the data at the 3 sigma level
|
Classification of lepton mixing matrices from finite residual symmetries
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classification of lepton mixing matrices from finite residual symmetries
|
neutrinos majorana residual symmetries lepton matrices. residual symmetries originate flavour group. mathematical accomplish theorems sums roots unity. sporadic infinite flavour literature. infinite compatible sigma
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non_dup
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[] |
35082568
|
10.1007/JHEP09(2014)035
|
We study the sensitivity of a down type quark b ′ via process pp → b ′ b ¯ ′ $$ b^{\prime}\overline{b}^{\prime } $$ → t W − t ¯ W + $$ t{W}^{-\overline{t}W+} $$ using jet substructure methods at the LHC with the collision energy s $$ \sqrt{s} $$ = 14 TeV. We consider the case that the b ′ is heavy (say from 800 GeV to 1500 GeV) and concentrate on the feasibility of the full hadronic mode. Both top tagger (the HEP top tagger) and W tagger (the CMS W-tagging) are used to reconstruct all objects in the final states. In order to suppress huge SM background events and take into account various cases with different number of boosted objects, we propose a comprehensive reconstruction procedure so as to extract the most crucial observables of the signal events. When b ′ mass is 1 TeV, it is found that with a 200 fb −1 dataset, the LHC may be able to detect the b ′ with a significance up to 10 or better. With a 3000 f b −1 dataset, the LHC may be able to probe the b ′ with a mass around up to 2 TeV, only by using the hadronic mode
|
Hadronic b ′ search at the LHC with top and W taggers
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hadronic b ′ search at the lhc with top and w taggers
|
prime overline prime overline substructure collision sqrt tev. concentrate feasibility hadronic mode. tagger tagger tagger tagging reconstruct states. suppress huge boosted propose comprehensive reconstruction extract crucial observables events. dataset detect better. dataset hadronic
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non_dup
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[] |
35082576
|
10.1007/JHEP09(2014)042
|
In a combined study of the decay spectra of τ − − K S π − ν τ and τ − − K − ην τ decays within a dispersive representation of the required form factors, we illustrate how the K * (1410) resonance parameters, defined through the pole position in the complex plane, can be extracted with improved precision as compared to previous studies. While we obtain a substantial improvement in the mass, the uncertainty in the width is only slightly reduced, with the findings M K *′ = 1304 ± 17 MeV and Γ K *′ = 171 ± 62 MeV. Further constraints on the width could result from updated analyses of the Kπ and/or Kη spectra using the full Belle-I data sample. Prospects for Belle-II are also discussed. As the K − π 0 vector form factor enters the description of the decay τ − − K − ην τ , we are in a position to investigate isospin violations in its parameters like the form factor slopes. In this respect also making available the spectrum of the transition τ − → K − π 0 ν τ would be extremely useful, as it would allow to study those isospin violations with much higher precision
|
Combined analysis of the decays τ − → K S π − ν τ and τ − → K − ην τ
|
combined analysis of the decays τ − → k s π − ν τ and τ − → k − ην τ
|
decays dispersive illustrate pole precision studies. substantial mev. updated belle sample. prospects belle discussed. enters isospin violations slopes. extremely isospin violations precision
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non_dup
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[] |
35082565
|
10.1007/JHEP09(2014)044
|
We give the supersymmetric extension of exceptional field theory for E 7(7) , which is based on a (4 + 56)-dimensional generalized spacetime subject to a covariant constraint. The fermions are tensors under the local Lorentz group SO(1, 3) × SU(8) and transform as scalar densities under the E 7(7) (internal) generalized diffeomorphisms. The supersymmetry transformations are manifestly covariant under these symmetries and close, in particular, into the generalized diffeomorphisms of the 56-dimensional space. We give the fermionic field equations and prove supersymmetric invariance. We establish the consistency of these results with the recently constructed generalized geometric formulation of D = 11 supergravity
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Supersymmetric E 7(7) exceptional field theory
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supersymmetric e 7(7) exceptional field theory
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supersymmetric exceptional spacetime covariant constraint. fermions tensors lorentz transform densities diffeomorphisms. supersymmetry transformations manifestly covariant symmetries diffeomorphisms space. fermionic supersymmetric invariance. establish consistency geometric formulation supergravity
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non_dup
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[] |
25022653
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10.1007/JHEP09(2014)05
|
Tensor models generalize matrix models and generate colored triangulations of
pseudo-manifolds in dimensions $D\geq 3$. The free energies of some models have
been recently shown to admit a double scaling limit, i.e. large tensor size $N$
while tuning to criticality, which turns out to be summable in dimension less
than six. This double scaling limit is here extended to arbitrary models. This
is done by means of the Schwinger--Dyson equations, which generalize the loop
equations of random matrix models, coupled to a double scale analysis of the
cumulants.Comment: 37 pages, 13 figures; several references were added. A new subsection
was added to first present all the results (before the technical proofs which
will follow). A misprint was correcte
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The double scaling limit of random tensor models
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the double scaling limit of random tensor models
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generalize colored triangulations pseudo manifolds admit i.e. tuning criticality turns summable six. models. schwinger dyson generalize pages added. subsection proofs misprint correcte
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non_dup
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[] |
35082573
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10.1007/JHEP09(2014)051
|
Tensor models generalize matrix models and generate colored triangulations of pseudo-manifolds in dimensions D ≥ 3. The free energies of some models have been recently shown to admit a double scaling limit, i.e. large tensor size N while tuning to criticality, which turns out to be summable in dimension less than six. This double scaling limit is here extended to arbitrary models. This is done by means of the Schwinger-Dyson equations, which generalize the loop equations of random matrix models, coupled to a double scale analysis of the cumulants
|
The double scaling limit of random tensor models
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the double scaling limit of random tensor models
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generalize colored triangulations pseudo manifolds admit i.e. tuning criticality turns summable six. models. schwinger dyson generalize cumulants
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non_dup
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[] |
24974275
|
10.1007/JHEP09(2014)055
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We show that geometric theories with $p$-form gauge fields have a
nonassociative symmetry structure, extending an underlying Lie algebra. This
nonassociativity is controlled by the same Chevalley-Eilenberg cohomology that
classifies free differential algebras, $p$-form generalizations of
Cartan-Maurer equations. A possible relation with flux backgrounds of closed
string theory is pointed out.Comment: 8 pages, LaTeX. Shortened review part on extended Lie derivatives and
free differential algebras, added computation of the Jacobiator for D=11
supergravity, added references. Matches published version on JHE
|
Higher form gauge fields and their nonassociative symmetry algebras
|
higher form gauge fields and their nonassociative symmetry algebras
|
geometric nonassociative extending algebra. nonassociativity chevalley eilenberg cohomology classifies algebras generalizations cartan maurer equations. backgrounds pointed pages latex. shortened derivatives algebras jacobiator supergravity references. matches
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non_dup
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35082508
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10.1007/JHEP09(2014)085
|
A novel understanding of scattering amplitudes in terms of on-shell diagrams and positive Grassmannian has been recently established for four dimensional Yang-Mills theories and three dimensional Chern-Simons theories of ABJM type. We give a detailed construction of the positroid stratification of orthogonal Grassmannian relevant for ABJM amplitudes. On-shell diagrams are classified by pairing of external particles. We introduce a combinatorial aid called ‘OG tableaux’ and map each equivalence class of on-shell diagrams to a unique tableau. The on-shell diagrams related to each other through BCFW bridging are naturally grouped by the OG tableaux. Introducing suitably ordered BCFW bridges and positive coordinates, we construct the complete coordinate charts to cover the entire positive orthogonal Grassmannian for arbitrary number of external particles. The graded counting of OG tableaux suggests that the positive orthogonal Grassmannian constitutes a combinatorial polytope
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Positroid stratification of orthogonal Grassmannian and ABJM amplitudes
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positroid stratification of orthogonal grassmannian and abjm amplitudes
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amplitudes diagrams grassmannian mills chern simons abjm type. positroid stratification orthogonal grassmannian abjm amplitudes. diagrams classified pairing particles. combinatorial tableaux’ equivalence diagrams tableau. diagrams bcfw bridging naturally grouped tableaux. introducing suitably ordered bcfw bridges coordinate charts cover orthogonal grassmannian particles. graded counting tableaux orthogonal grassmannian constitutes combinatorial polytope
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non_dup
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25035506
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10.1007/JHEP09(2014)088
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We compute the global gauge and gravitational anomalies of the A-type (2,0)
superconformal quantum field theories in six dimensions, and conjecture a
formula valid for the D- and E-type theories. We show that the anomaly contains
terms that do not contribute to the local anomaly but that are crucial for the
consistency of the global anomaly. A side result is an intuitive picture for
the appearance of Hopf-Wess-Zumino terms on the Coulomb branch of the (2,0)
theories.Comment: 35 pages, 2 figures. v2: typos corrected, some clarifications added
in the introduction and in Section 4.6, version to be published in JHE
|
The global anomalies of (2,0) superconformal field theories in six
dimensions
|
the global anomalies of (2,0) superconformal field theories in six dimensions
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gravitational anomalies superconformal conjecture valid theories. anomaly anomaly crucial consistency anomaly. intuitive picture appearance hopf wess zumino coulomb branch pages figures. typos corrected clarifications
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non_dup
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25033671
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10.1007/JHEP09(2014)110
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We study N=4 SYM theory coupled to fundamental N=2 hypermultiplets in a state
of finite charge density. The setup can be described holographically as a
configuration of D3 and D7 branes with a non-trivial worldvolume gauge field on
the D7. The phase has been identified as a new form of quantum liquid, where
certain properties are those of a Fermi liquid while others are clearly
distinct. We focus on the entanglement among the flavors, as quantified by the
entanglement entropy. The expectation for a Fermi liquid would be a logarithmic
enhancement of the area law, but we find a more drastic enhancement instead.
The leading contributions are volume terms with a non-trivial shape dependence,
signaling extensive entanglement among the flavors. At finite temperature these
correlations are confined to a region of size given by the inverse temperature.Comment: 16 pages, 2 figures; published version, references adde
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Flavored N=4 SYM -- a highly entangled quantum liquid
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flavored n=4 sym -- a highly entangled quantum liquid
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hypermultiplets density. setup holographically branes trivial worldvolume fermi distinct. entanglement flavors quantified entanglement entropy. expectation fermi logarithmic enhancement drastic enhancement instead. trivial extensive entanglement flavors. confined pages adde
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non_dup
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35082461
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10.1007/JHEP09(2014)115
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We find a permutation relation among the generalized Yangian Invariants — two Yangian Invariants with adjacent external lines exchanged are related by a simple kinematic factor — which is shown to be equivalent to U(1) decoupling and Bern-Carrasco-Johansson (BCJ) relation at the level of maximal helicity violating (MHV) amplitudes. We propose using unitarity cuts to study nonplanar amplitudes and to systematically reconstruct the integrands of nonplanar MHV amplitudes, up to a rational function which vanishes under all possible unitarity cuts. This is made possible with the newly found permutation relations by converting nonplanar on-shell diagrams into planar ones. As explicit examples the construction of one-loop double-trace MHV amplitudes of 4- and 5-point interactions are presented using on-shell diagrams. The kinematic factors and the resultant planar diagrams are carefully dealt with using the unitarity cut conditions. The first next-to-MHV amplitudes are addressed using generalized unitarity cuts. Their leading singularities can be identified as residues of the Grassmanian integrals. These examples also serve to demonstrate the power of the newly found relation of the generalized Yangian Invariants
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Permutation relations of generalized Yangian Invariants, unitarity cuts, and scattering amplitudes
|
permutation relations of generalized yangian invariants, unitarity cuts, and scattering amplitudes
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permutation yangian invariants yangian invariants adjacent exchanged kinematic decoupling bern carrasco johansson maximal helicity violating amplitudes. propose unitarity cuts nonplanar amplitudes systematically reconstruct integrands nonplanar amplitudes rational vanishes unitarity cuts. newly permutation converting nonplanar diagrams planar ones. trace amplitudes diagrams. kinematic resultant planar diagrams carefully dealt unitarity conditions. amplitudes addressed unitarity cuts. singularities grassmanian integrals. serve newly yangian invariants
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non_dup
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25041780
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10.1007/JHEP09(2014)134
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We present a next-to-next-to-leading order accurate description of Drell-Yan
lepton pair production processes through $\gamma^*/Z$ or $W$ exchange that
includes consistently parton shower effects. Results are obtained by upgrading
the vector-boson plus one jet NLO calculation in POWHEG with the MiNLO
procedure and by applying an appropriate reweighting procedure making use of
the DYNNLO program. We compare to existing data and to accurate resummed
calculations.Comment: 31 pages, 17 figures, 1 tabl
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NNLOPS accurate Drell-Yan production
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nnlops accurate drell-yan production
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drell lepton gamma consistently parton shower effects. upgrading boson powheg minlo reweighting dynnlo program. resummed pages tabl
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non_dup
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25044110
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10.1007/JHEP09(2014)135
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The full one-loop supersymmetric effective potential for the Wess-Zumino
model is calculated using superfield techniques. This includes the K\"ahler
potential and the auxiliary field potential, of which the former was originally
computed in 1993 while the latter is derived for the first time. In the purely
bosonic sector our results match those of older component field calculations.
In light of prior contradictory results found in the literature, the
calculation of the leading term in the auxiliary field potential is approached
in a variety of ways. Issues related to conditional convergence that occur
during these calculations and their possible consequences are discussed.Comment: 32 page
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The one-loop effective potential of the Wess-Zumino model revisited
|
the one-loop effective potential of the wess-zumino model revisited
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supersymmetric wess zumino superfield techniques. ahler auxiliary former originally time. purely bosonic match older calculations. contradictory auxiliary approached ways. conditional consequences
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non_dup
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35082399
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10.1007/JHEP09(2014)153
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We extend the Zee-Babu model for the neutrino masses and mixings by first incorporating a scalar dark matter X with Z 2 symmetry and then X and a dark scalar φ with global U(1) symmetry. In the latter scenario the singly and doubly charged scalars that are new in the Zee-Babu model can explain the large annihilation cross section of a dark matter pair into two photons as hinted by the recent analysis of the Fermi γ-ray space telescope data. These new scalars can also enhance the B ( H → γγ), as the recent LHC results may suggest. The dark matter relic density can be explained. The direct detection rate of the dark matter is predicted to be about one order of magnitude down from the current experimental bound in the first scenario
|
Can Zee-Babu model implemented with scalar dark matter explain both Fermi-LAT 130 GeV γ-ray excess and neutrino physics?
|
can zee-babu model implemented with scalar dark matter explain both fermi-lat 130 gev γ-ray excess and neutrino physics?
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extend babu mixings incorporating symmetry. singly doubly scalars babu annihilation photons hinted fermi telescope data. scalars enhance suggest. relic explained.
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non_dup
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24992574
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10.1007/JHEP09(2014)163
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We argue that inflationary dynamics may support a scenario where significant
matter-antimatter asymmetry is generated from initially small-scale quantum
fluctuations that are subsequently stretched out over large scales. This
scenario can be realised in extensions of the Standard Model with an extra
gauge symmetry having mixed anomalies with the electroweak gauge symmetry.
Inflationary baryogenesis in a model with gauged baryon number is considered in
detail.Comment: 11 pages, V3 - major revisio
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Inflationary Baryogenesis in a Model with Gauged Baryon Number
|
inflationary baryogenesis in a model with gauged baryon number
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argue inflationary antimatter asymmetry initially subsequently stretched scales. realised extensions extra anomalies electroweak symmetry. inflationary baryogenesis gauged baryon pages revisio
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non_dup
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25019264
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10.1007/JHEP09(2014)173
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We compute three-point functions of general operators in the su(1|1) sector
of planar N = 4 SYM in the weak coupling regime, both at tree-level and
one-loop. Each operator is represented by a closed spin chain Bethe state
characterized by a set of momenta parameterizing the fermionic excitations. At
one-loop, we calculate both the two-loop Bethe eigenstates and the relevant
Feynman diagrams for the three-point functions within our setup. The final
expression for the structure constants is surprisingly simple and hints at a
possible form factor based approach yet to be unveiled.Comment: 36 page
|
Three-Point Functions and su(1|1) Spin Chains
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three-point functions and su(1|1) spin chains
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planar loop. bethe momenta parameterizing fermionic excitations. bethe eigenstates feynman diagrams setup. surprisingly hints
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non_dup
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25025635
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10.1007/JHEP09(2014)179
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We calculate the quasinormal modes of massless scalar perturbations around
small and large four-dimensional Reissner-Nordstrom-Anti de Sitter (RN-AdS)
black holes. We find a dramatic change in the slopes of quasinormal frequencies
in small and large black holes near the critical point where the Van der Waals
like thermodynamic phase transition happens. This further supports that the
quasinormal mode can be a dynamic probe of the thermodynamic phase transition.Comment: 20 pages,11 figures.The new version is accepted for publication in
JHE
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Signature of the Van der Waals like small-large charged AdS black hole
phase transition in quasinormal modes
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signature of the van der waals like small-large charged ads black hole phase transition in quasinormal modes
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quasinormal massless perturbations reissner nordstrom sitter holes. dramatic slopes quasinormal holes waals thermodynamic happens. supports quasinormal thermodynamic pages figures.the publication
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non_dup
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25044420
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10.1007/JHEP09(2014)181
|
We study the ghost-free bimetric theory of Hassan and Rosen, with parameters
$\beta_i$ such that a flat Minkowski solution exists for both metrics. We show
that, expanding around this solution and eliminating one of the two metrics
with its own equation of motion, the remaining metric is governed by the
Einstein-Hilbert action plus a non-local term proportional to
$W_{\mu\nu\rho\sigma} (\Box-m^2)^{-1}W^{\mu\nu\rho\sigma}$, where
$W_{\mu\nu\rho\sigma}$ is the Weyl tensor. The result is valid to quadratic
order in the metric perturbation and to all orders in the derivative expansion.
This example shows, in a simple setting, how such non-local extensions of GR
can emerge from an underlying consistent theory, at the purely classical level.Comment: 16 page
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Non-local formulation of ghost-free bigravity theory
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non-local formulation of ghost-free bigravity theory
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ghost bimetric hassan rosen beta minkowski metrics. expanding eliminating metrics governed einstein hilbert sigma sigma sigma weyl tensor. valid quadratic perturbation orders expansion. extensions emerge purely
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non_dup
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25042952
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10.1007/JHEP09(2014)182
|
The possibility that new physics beyond the Standard Model (SM) appears only
at the Planck scale $M_P$ is often considered. However, it is usually argued
that new physics interactions at $M_P$ do not affect the SM stability phase
diagram, so the latter is obtained neglecting these terms. According to this
diagram, for the current experimental values of the top and Higgs masses, our
universe lives in a metastable state (with very long lifetime), near the edge
of stability. Contrary to these expectations, however, we show that the
stability phase diagram strongly depends on new physics and that, despite
claims to the contrary, a more precise determination of the top (as well as of
the Higgs) mass will not allow to discriminate between stability, metastability
or criticality of the electroweak vacuum. At the same time, we show that the
conditions needed for the realization of Higgs inflation scenarios (all
obtained neglecting new physics) are too sensitive to the presence of new
interactions at $M_P$. Therefore, Higgs inflation scenarios require very severe
fine tunings that cast serious doubts on these models.Comment: 20 pages, 10 figure
|
Top mass determination, Higgs inflation, and vacuum stability
|
top mass determination, higgs inflation, and vacuum stability
|
planck considered. argued neglecting terms. universe lives metastable lifetime stability. contrary expectations claims contrary precise discriminate metastability criticality electroweak vacuum. realization inflation scenarios neglecting inflation scenarios fine tunings cast serious doubts pages
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non_dup
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35088381
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10.1007/JHEP09(2015)017
|
We compute the conformal anomaly a-coefficient for some non-unitary (higher derivative or non-gauge-invariant) 6d conformal fields and their supermultiplets. We use the method based on a connection between 6d determinants on S 6 and 7d determinants on AdS 7 . We find, in particular, that (1,0) supermultiplet containing 4-derivative gauge-invariant conformal vector has precisely the value of a-anomaly as attributed in arXiv:1506.03807 (on the basis of R-symmetry and gravitational ’t Hooft anomaly matching) to the standard (1,0) vector multiplet. We also show that higher derivative (2,0) 6d conformal supergravity coupled to exactly 26 (2,0) tensor multiplets has vanishing a-anomaly (and also vanishing Casimir energy on 5-sphere). This is the 6d counterpart of the known fact of cancellation of the conformal anomaly in the 4d system of N = 4 $$ \mathcal{N}=4 $$ conformal supergravity coupled to 4 vector N = 4 $$ \mathcal{N}=4 $$ multiplets. In the case when 5 of tensor multiplets are chosen to be ghost-like and the conformal symmetry is spontaneously broken by a quadratic scalar constraint the resulting IR theory may be identified with (2,0) Poincaré supergravity coupled to 21 = 26 − 5 tensor multiplets. The latter theory is known to be special — it is gravitational anomaly free and results upon compactification of 10d type IIB supergravity on K3
|
Conformal a-anomaly of some non-unitary 6d superconformal theories
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conformal a-anomaly of some non-unitary 6d superconformal theories
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conformal anomaly unitary conformal supermultiplets. connection determinants determinants supermultiplet conformal precisely anomaly attributed gravitational hooft anomaly matching multiplet. conformal supergravity multiplets vanishing anomaly vanishing casimir sphere counterpart cancellation conformal anomaly mathcal conformal supergravity mathcal multiplets. multiplets ghost conformal spontaneously broken quadratic poincaré supergravity multiplets. gravitational anomaly compactification supergravity
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non_dup
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35088296
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10.1007/JHEP09(2015)045
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We investigate a supersymmetric extension of the Minimal Supersymmetric Standard Model (MSSM), called the TNMSSM, containing a SU(2) Higgs triplet T ^ $$ \left(\widehat{T}\right) $$ of Y = 0 hypercharge and a singlet superfields ( Ŝ ) in the corresponding superpotential. The model can be viewed, equivalently, as an extension of the NMSSM with the addition of a T ^ − S ^ $$ \widehat{T}-\widehat{S} $$ interaction and of an extra coupling of the triplet to the two Higgs doublets of the NMSSM. In this scenario the Higgs particle spectrum at tree-level gets additional mass contributions from the triplet and singlet scalar components respect to the MSSM, which are particularly enhanced at low tan β . We calculate the one-loop Higgs masses for the neutral physical Higgs bosons by a Coleman-Weinberg effective potential approach. In particular, we investigate separately the impact of the radiative corrections due to the electroweak, gauge-gaugino-higgsino, fermion-sfermion and Higgs self-interactions to the Higgs masses. Due to the larger number of scalars and of triplet and singlet couplings, the Higgs corrections can be larger than the strong corrections. This reduces the amount of fine-tuning required to fit the recent Higgs data. Using the expressions of the beta-functions of the model, we show that the large triplet singlet coupling remains perturbative up to ∼ 10 8−10 GeV. The model is also characterized by a light pseudoscalar in the spectrum, which is a linear combination of the triplet, doublet and singlet CP-odd components. We discuss the production and decay signatures of the Higgs bosons in this model, including scenarios with hidden Higgses, which could be investigated at the LHC in the current run
|
Perspectives on a supersymmetric extension of the standard model with a Y = 0 Higgs triplet and a singlet at the LHC
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perspectives on a supersymmetric extension of the standard model with a y = 0 higgs triplet and a singlet at the lhc
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supersymmetric supersymmetric mssm tnmssm triplet widehat hypercharge singlet superfields superpotential. viewed equivalently nmssm widehat widehat extra triplet doublets nmssm. gets triplet singlet mssm neutral bosons coleman weinberg approach. separately radiative electroweak gaugino higgsino fermion sfermion masses. scalars triplet singlet couplings corrections. reduces fine tuning data. expressions beta triplet singlet perturbative gev. pseudoscalar triplet doublet singlet components. signatures bosons scenarios hidden higgses
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non_dup
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148783242
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10.1007/JHEP09(2015)046
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We investigate the large N instanton effects of partition functions in a class of N=4 circular quiver Chern-Simons theories on a three-sphere. Our analysis is based on the supersymmetry localization and the Fermi-gas formalism. The resulting matrix model can be regarded as a two-parameter deformation of the ABJM matrix model, and has richer non-perturbative structures. Based on a systematic semi-classical analysis, we find analytic expressions of membrane instanton corrections. We also exactly compute the partition function for various cases and find some exact forms of worldsheet instanton corrections, which appear as quantum mechanical non-perturbative corrections in the Fermi-gas system
|
Large N non-perturbative effects in N=4 superconformal Chern-Simons theories
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large n non-perturbative effects in n=4 superconformal chern-simons theories
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instanton partition circular quiver chern simons sphere. supersymmetry localization fermi formalism. regarded deformation abjm richer perturbative structures. analytic expressions instanton corrections. partition worldsheet instanton perturbative fermi
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non_dup
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29521720
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10.1007/JHEP09(2015)056
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We search for realistic supersymmetric standard-like models from SO(32)
heterotic string theory on factorizable tori with multiple magnetic fluxes.
Three chiral ganerations of quarks and leptons are derived from the adjoint and
vector representations of SO(12) gauge groups embedded in SO(32) adjoint
representation. Massless spectra of our models also include Higgs fields, which
have desired Yukawa couplings to quarks and leptons at the tree-level.Comment: 29 pages, Typos corrected, references added, and Sec. 3.3 is adde
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Realistic three-generation models from SO(32) heterotic string theory
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realistic three-generation models from so(32) heterotic string theory
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realistic supersymmetric heterotic factorizable tori fluxes. chiral ganerations quarks leptons adjoint representations embedded adjoint representation. massless desired yukawa couplings quarks leptons pages typos corrected sec. adde
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non_dup
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35088295
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10.1007/JHEP09(2015)062
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We study analytically and numerically the three-dimensional U(1) lattice gauge theory at finite temperature in the dual formulation. For an appropriate disorder operator, we obtain the renormalization group equations describing the critical behavior of the model in the vicinity of the deconfinement phase transition. These equations are used to check the validity of the Svetitsky-Yaffe conjecture regarding the critical behavior of the lattice U(1) model. Furthermore, we perform numerical simulations of the model for N t = 1 , 2 , 4 , 8 and compute, by a cluster algorithm, the dual correlation functions and the corresponding second moment correlation length. In this way we locate the position of the critical point and calculate critical indices
|
Deconfinement and universality in the 3 D U(1) lattice gauge theory at finite temperature: study in the dual formulation
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deconfinement and universality in the 3 d u(1) lattice gauge theory at finite temperature: study in the dual formulation
|
analytically numerically formulation. disorder renormalization describing vicinity deconfinement transition. check validity svetitsky yaffe conjecture model. moment length. locate indices
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non_dup
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29543884
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10.1007/JHEP09(2015)086
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We explore a large class of F-theory compactifications to four dimensions. We
find evidence that gauge groups that cannot be Higgsed without breaking
supersymmetry, often accompanied by associated matter fields, are a ubiquitous
feature in the landscape of ${\cal N} = 1$ 4D F-theory constructions. In
particular, we study 4D F-theory models that arise from compactification on
threefold bases that are $\mathbb{P}^1$ bundles over certain toric surfaces.
These bases are one natural analogue to the minimal models for base surfaces
for 6D F-theory compactifications. Of the roughly 100,000 bases that we study,
only 80 are weak Fano bases in which there are no automatic singularities on
the associated elliptic Calabi-Yau fourfolds, and 98.3% of the bases have
geometrically non-Higgsable gauge factors. The $\mathbb{P}^1$-bundle threefold
bases we analyze contain a wide range of distinct surface topologies that
support geometrically non-Higgsable clusters. Many of the bases that we
consider contain $SU(3)\times SU(2)$ seven-brane clusters for generic values of
deformation moduli; we analyze the relative frequency of this combination
relative to the other four possible two-factor non-Higgsable product groups, as
well as various other features such as geometrically non-Higgsable candidates
for dark matter structure and phenomenological ($SU(2)$-charged) Higgs fields.Comment: 51 pages + references, appendices. v2: references adde
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$\mathbb{P}^1$-bundle bases and the prevalence of non-Higgsable
structure in 4D F-theory models
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$\mathbb{p}^1$-bundle bases and the prevalence of non-higgsable structure in 4d f-theory models
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explore compactifications dimensions. higgsed breaking supersymmetry accompanied ubiquitous landscape constructions. arise compactification threefold bases mathbb bundles toric surfaces. bases analogue compactifications. roughly bases fano bases automatic singularities elliptic calabi fourfolds bases geometrically higgsable factors. mathbb bundle threefold bases analyze topologies geometrically higgsable clusters. bases seven brane generic deformation moduli analyze higgsable geometrically higgsable candidates phenomenological pages appendices. adde
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non_dup
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29536008
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10.1007/JHEP09(2015)088
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We classify all N=2 rigid supersymmetric backgrounds in four dimensions with
both Lorentzian and Euclidean signature that preserve eight real supercharges,
up to discrete identifications. Among the backgrounds we find specific warpings
of S^3 x R and AdS_3 x R, AdS_2 x S^2 and H^2 x S^2 with generic radii, and
some more exotic geometries. We provide the generic two-derivative rigid vector
and hypermultiplet actions and analyze the conditions imposed on the special
Kahler and hyperkahler target spaces.Comment: 50 + 17 pages; v2: minor corrections, published versio
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Rigid 4D N=2 supersymmetric backgrounds and actions
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rigid 4d n=2 supersymmetric backgrounds and actions
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classify rigid supersymmetric backgrounds lorentzian euclidean signature preserve eight supercharges identifications. backgrounds warpings generic radii exotic geometries. generic rigid hypermultiplet analyze imposed kahler hyperkahler pages minor versio
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non_dup
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29552765
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10.1007/JHEP09(2015)096
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We investigate source and detector non-standard neutrino interactions at the
proposed ESS$\nu$SB experiment. We analyze the effect of non-standard physics
at the probability level, the event-rate level and by a full computation of the
ESS$\nu$SB setup. We find that the precision measurement of the leptonic mixing
angle $\theta_{23}$ at ESS$\nu$SB is robust in the presence of non-standard
interactions, whereas that of the leptonic CP-violating phase $\delta$ is
worsened at most by a factor of two. We compute sensitivities to all the
relevant source and decector non-standard interaction parameters and find that
the sensitivities to the parameters $\varepsilon^s_{\mu e}$ and
$\varepsilon^d_{\mu e}$ are comparable to the existing limits in a realistic
scenario, while they improve by a factor of two in an optimistic scenario.
Finally, we show that the absence of a near detector compromises the
sensitivity of ESS$\nu$SB to non-standard interactions.Comment: 26 pages, 10 figures. Final version published in JHE
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Exploring Source and Detector Non-Standard Neutrino Interactions at
ESS$\nu$SB
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exploring source and detector non-standard neutrino interactions at ess$\nu$sb
|
experiment. analyze setup. precision leptonic theta robust leptonic violating delta worsened two. sensitivities decector sensitivities varepsilon varepsilon comparable realistic optimistic scenario. compromises pages figures.
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non_dup
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29544241
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10.1007/JHEP09(2015)097
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We present a new systematic way to evaluate the classical limit of the
Virasoro irregular conformal block for arbitrary rank n based on the irregular
partition function. In addition, we prove that the classical irregular
conformal block has the exponential form as suggested by A. Zamolodchikov and
Al. Zamolodchikov for the regular case. We provide an explicit calculation for
the rank 2 case in detail.Comment: 13 pages; v2: typos corrected, technical details moved to appendices,
accepted by JHE
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Classical Virasoro irregular conformal block II
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classical virasoro irregular conformal block ii
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virasoro irregular conformal irregular partition function. irregular conformal exponential zamolodchikov zamolodchikov case. pages typos corrected moved appendices
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non_dup
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29548036
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10.1007/JHEP09(2015)107
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We consider 3d N=1 M-theory compactifications on Calabi-Yau fourfolds, and
the effective 3d theory of light modes obtained by reduction from eleven
dimensions. We study in detail the mass spectrum at the vacuum and, by
decoupling the massive multiplets, we derive the effective 3d N=1 theory in the
large-volume limit up to quartic fermion terms. We show that in general it is
an ungauged N=1 supergravity of the form expected from 3d supersymmetry. In
particular the massless bosonic fields consist of the volume modulus and the
axions originating from the eleven-dimensional three-form, while the
moduli-space metric is locally isometric to hyperbolic space. We consider the
F-theory interpretation of the 3d N=1 M-theory vacua in the light of the
F-theory effective action approach. We show that these vacua generally have
F-theory duals with circle fluxes, thus breaking 4d Poincar\'e invariance.Comment: 37 pages. Published version, minor change
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3d N=1 effective supergravity and F-theory from M-theory on fourfolds
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3d n=1 effective supergravity and f-theory from m-theory on fourfolds
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compactifications calabi fourfolds eleven dimensions. decoupling massive multiplets derive quartic fermion terms. ungauged supergravity supersymmetry. massless bosonic consist modulus axions originating eleven moduli locally isometric hyperbolic space. vacua approach. vacua duals circle fluxes breaking poincar pages. minor
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non_dup
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29529361
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10.1007/JHEP09(2015)131
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We compute a T-odd triple vector correlation for the $\mu\rightarrow e\gamma
$ decay and the $\mu\rightarrow e$ conversion process. We find simple results
in terms of the CP violating phases of the effective Hamiltonians. Then we
focus on the minimal Left-Right symmetric extension of the Standard Model,
which can lead to an appreciable correlation. We show that under rather general
assumptions, this correlation can be used to discriminate between Parity or
Charge-conjugation as the discrete Left-Right symmetry.Comment: 22 pages, 5 figures. Comments added. Sections 5 and 6 expanded.
Appendices A and B expanded, accepted for publication in JHE
|
Time-reversal symmetry violation in several Lepton-Flavor-Violating
processes
|
time-reversal symmetry violation in several lepton-flavor-violating processes
|
triple rightarrow gamma rightarrow conversion process. violating hamiltonians. appreciable correlation. assumptions discriminate parity conjugation pages figures. comments added. expanded. appendices expanded publication
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non_dup
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29501523
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10.1007/JHEP09(2015)134
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We present a model of neutrino masses within the framework of the EW-$\nu_R$
model in which the experimentally desired form of the PMNS matrix is obtained
by applying an $A_4$ symmetry to the \emph{Higgs singlet sector} responsible
for the neutrino Dirac mass matrix. This mechanism naturally avoids potential
conflict with the LHC data which severely constrains the Higgs sector, in
particular the Higgs doublets. Moreover, by making a simple $ans\ddot{a}tz$ we
extract $\mathcal{M}_l {\mathcal{M}_l}^\dagger$ for the charged lepton sector.
A similar $ans\ddot{a}tz$ is proposed for the quark sector. The sources of
masses for the neutrinos are entirely different from those for the charged
leptons and for the quarks and this might explain why $U_{PMNS}$ is {\em very
different} from $V_{CKM}$.Comment: 19 pages. Two figure
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On neutrino and charged lepton masses and mixings: A view from the
electroweak-scale right-handed neutrino model
|
on neutrino and charged lepton masses and mixings: a view from the electroweak-scale right-handed neutrino model
|
experimentally desired pmns emph singlet dirac matrix. naturally avoids conflict severely constrains doublets. ddot extract mathcal mathcal dagger lepton sector. ddot sector. neutrinos entirely leptons quarks pmns .comment pages.
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non_dup
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29506605
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10.1007/JHEP09(2015)135
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We identify the fractions of supersymmetry preserved by the most general
warped flux AdS and flat backgrounds in both massive and standard IIA
supergravities. We find that $AdS_n\times_w M^{10-n}$ preserve $2^{[{n\over2}]}
k$ for $n\leq 4$ and $2^{[{n\over2}]+1} k$ for $4<n\leq 7$ supersymmetries,
$k\in \bN_{>0}$. In addition we show that, for suitably restricted fields and
$M^{10-n}$, the killing spinors of AdS backgrounds are given in terms of the
zero modes of Dirac like operators on $M^{10-n}$. This generalizes the
Lichnerowicz theorem for connections whose holonomy is included in a general
linear group. We also adapt our results to $\bR^{1,n-1}\times_w M^{10-n}$
backgrounds which underpin flux compactifications to $\bR^{1,n-1}$ and show
that these preserve $2^{[{n\over2}]} k$ for $2<n\leq 4$, $2^{[{n+1\over2}]} k$
for $4<n\leq 8$, and $2^{[{n\over2}]} k$ for $n=9, 10$ supersymmetries.Comment: 44 page
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Supersymmetry of IIA warped flux AdS and flat backgrounds
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supersymmetry of iia warped flux ads and flat backgrounds
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fractions supersymmetry preserved warped backgrounds massive supergravities. preserve supersymmetries suitably restricted killing spinors backgrounds dirac generalizes lichnerowicz connections holonomy group. adapt backgrounds underpin compactifications preserve
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non_dup
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60653055
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10.1007/JHEP09(2015)141
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Journal of High Energy Physics 2015.9 (2015): 141 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA)It was found that the non-perturbative corrections calculated using Pythia with the Perugia 2011 tune did not include the effect of the underlying event. The affected correction factors were recomputed using the Pythia 6.427 generator. These corrections are applied as baseline to the NLO pQCD calculations and thus the central values of the theoretical predictions have changed by a few percent with the new corrections. This has a minor impact on the agreement between the data and the theoretical predictions. Figures 2 and 6 to 13, and all the tables have been updated with the new values. A few sentences in the discussion in sections 5.2 and 9 were altered or remove
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Erratum: Measurement of the inclusive jet cross-section in proton-proton collisions at √s = 7 TeV using 4.5fb −1 of data with the ATLAS detector
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erratum: measurement of the inclusive jet cross-section in proton-proton collisions at √s = 7 tev using 4.5fb −1 of data with the atlas detector
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reproduced permission scuola internazionale superiore studi avanzati sissa perturbative pythia perugia tune event. recomputed pythia generator. pqcd changed percent corrections. minor predictions. tables updated values. sentences altered remove
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non_dup
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[] |
29529734
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10.1007/JHEP09(2015)144
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We study elliptic fibrations for F-theory compactifications realizing 4d and
6d supersymmetric gauge theories with abelian gauge factors. In the fibration
these U(1) symmetries are realized in terms of additional rational sections. We
obtain a universal characterization of all the possible U(1) charges of matter
fields by determining the corresponding codimension two fibers with rational
sections. In view of modelling supersymmetric Grand Unified Theories, one of
the main examples that we analyze are U(1) symmetries for SU(5) gauge theories
with \bar{5} and 10 matter. We use a combination of constraints on the normal
bundle of rational curves in Calabi-Yau three- and four-folds, as well as the
splitting of rational curves in the fibers in codimension two, to determine the
possible configurations of smooth rational sections. This analysis
straightforwardly generalizes to multiple U(1)s. We study the flops of such
fibers, as well as some of the Yukawa couplings in codimension three.
Furthermore, we carry out a universal study of the U(1)-charged GUT singlets,
including their KK-charges, and determine all realizations of singlet fibers.
By giving vacuum expectation values to these singlets, we propose a systematic
way to analyze the Higgsing of U(1)s to discrete gauge symmetries in F-theory.Comment: 93 pages, 23 figure
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F-theory and All Things Rational: Surveying U(1) Symmetries with
Rational Sections
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f-theory and all things rational: surveying u(1) symmetries with rational sections
|
elliptic fibrations compactifications realizing supersymmetric abelian factors. fibration symmetries realized rational sections. universal charges determining codimension fibers rational sections. supersymmetric grand unified analyze symmetries matter. bundle rational calabi folds splitting rational fibers codimension configurations rational sections. straightforwardly generalizes flops fibers yukawa couplings codimension three. carry universal singlets charges realizations singlet fibers. giving expectation singlets propose analyze higgsing symmetries pages
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non_dup
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29560893
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10.1007/JHEP09(2015)145
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In this paper, based on the principles of linear response theory, we compute
the longitudinal DC conductivity associated with Lifshitz like fixed points in
the presence of chiral anomalies in ($ 3+1 $) dimensions. In our analysis,
apart from having the usual anomalous contributions due to chiral anomaly, we
observe an additional and pure \textit{parity odd} effect to the
magnetoconductivity which has its origin in the broken Lorentz (boost)
invariance at a Lifshitz fixed point. We also device a holographic set up in
order to compute ($ z=2 $) Lifshitz contributions to the magnetoconductivity
precisely at strong coupling and low charge density limit.Comment: Minor clarifications added, Version To Appear In JHE
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Magnetoconductivity in chiral Lifshitz hydrodynamics
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magnetoconductivity in chiral lifshitz hydrodynamics
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principles longitudinal conductivity lifshitz chiral anomalies dimensions. apart usual anomalous chiral anomaly textit parity magnetoconductivity broken lorentz boost invariance lifshitz point. holographic lifshitz magnetoconductivity precisely minor clarifications
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non_dup
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29547157
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10.1007/JHEP09(2015)146
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In the ferromagnetic phase of the q-state Potts model, switching on an
external magnetic field induces confinement of the domain wall excitations. For
the Ising model (q = 2) the spectrum consists of kink-antikink states which are
the analogues of mesonic states in QCD, while for q = 3, depending on the sign
of the field, the spectrum may also contain three-kink bound states which are
the analogues of the baryons. In recent years the resulting "hadron" spectrum
was described using several different approaches, such as quantum mechanics in
the confining linear potential, WKB methods and also the Bethe-Salpeter
equation. Here we compare the available predictions to numerical results from
renormalization group improved truncated conformal space approach (RG-TCSA).
While mesonic states in the Ising model have already been considered in a
different truncated Hamiltonian approach, this is the first time that a
precision numerical study is performed for the 3-state Potts model. We find
that the semiclassical approach provides a very accurate description for the
mesonic spectrum in all the parameter regime for weak magnetic field, while the
low-energy expansion from the Bethe-Salpeter equation is only valid for very
weak fields where it gives a slight improvement over the semiclassical results.
In addition, we confirm the validity of the recent predictions for the baryon
spectrum obtained from solving the quantum mechanical three-body problem.Comment: 22 pages, pdflatex source with pdf figures. Version 2: references
added, introduction change
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Confinement in the q-state Potts model: an RG-TCSA study
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confinement in the q-state potts model: an rg-tcsa study
|
ferromagnetic potts switching induces confinement excitations. ising kink antikink analogues mesonic kink analogues baryons. hadron mechanics confining bethe salpeter equation. renormalization truncated conformal tcsa mesonic ising truncated precision potts model. semiclassical mesonic bethe salpeter valid slight semiclassical results. confirm validity baryon solving pages pdflatex figures.
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non_dup
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29531363
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10.1007/JHEP09(2015)147
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We consider the Singlet Majorana fermion dark matter model, in which the
standard model particles interact with the dark sector through the mixing of a
singlet scalar and the Higgs boson. In this model both the dark matter and the
singlet scalar carry lepton number, the latter being a bilepton. We suppose the
existence of a $Z_2$ symmetry, remnant of some high energy local symmetry
breaking, that stabilizes the Majorana fermion. We analyzed the parameter space
of this model and found that the lepton number symmetry breaking scale, drove
by the singlet scalar, is constrained to be within hundreds to thousands of
GeV, so as to conform with the observed dark matter relic density. Finally, we
address the direct detection and invisible Higgs decay complementarity,
confronting our model with recent LUX and LHC constraints, as well as XENON1T
prospects.Comment: 20 pages, 12 figure
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Majorana Dark Matter in Minimal Higgs Portal Models after LUX
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majorana dark matter in minimal higgs portal models after lux
|
singlet majorana fermion interact singlet boson. singlet carry lepton bilepton. remnant breaking stabilizes majorana fermion. lepton breaking drove singlet constrained hundreds thousands conform relic density. invisible complementarity confronting xenon pages
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non_dup
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29509966
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10.1007/JHEP09(2015)150
|
We propose an exact analytical formula for the anomalous scaling exponents of
inertial range structure functions in incompressible fluid turbulence. The
formula is a gravitational Knizhnik-Polyakov-Zamolodchikov (KPZ)-type relation,
and is valid in any number of space dimensions. It incorporates intermittency
by gravitationally dressing the Kolmogorov linear scaling via a coupling to a
random geometry. The formula has one real parameter $\gamma$ that depends on
the number of space dimensions. The scaling exponents satisfy the convexity
inequality, and the supersonic bound constraint. They agree with the
experimental and numerical data in two and three space dimensions, and with
numerical data in four space dimensions. Intermittency increases with $\gamma$,
and in the infinite $\gamma$ limit the scaling exponents approach the value
one, as in Burgers turbulence. At large $n$ the $n$th order exponent scales as
$\sqrt{n}$. We discuss the relation between fluid flows and black hole geometry
that inspired our proposal.Comment: 18 pages, 3 figures; v3: additional clarifications, added references;
v2: improved discussion, added one figur
|
The Anomalous Scaling Exponents of Turbulence in General Dimension from
Random Geometry
|
the anomalous scaling exponents of turbulence in general dimension from random geometry
|
propose anomalous exponents inertial incompressible turbulence. gravitational knizhnik polyakov zamolodchikov valid dimensions. incorporates intermittency gravitationally dressing kolmogorov geometry. gamma dimensions. exponents satisfy convexity inequality supersonic constraint. agree dimensions. intermittency gamma infinite gamma exponents burgers turbulence. exponent sqrt flows inspired pages clarifications figur
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non_dup
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29538751
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10.1007/JHEP09(2015)151
|
The U(1) extended supersymmetric standard model (UMSSM) can accommodate a
Higgs boson at 125 GeV without relying on large corrections from the top/stop
sector. After imposing LHC results on the Higgs sector, on B-physics and on new
particle searches as well as dark matter constraints, we show that this model
offers two viable dark matter candidates, the right-handed (RH) sneutrino or
the neutralino. Limits on supersymmetric partners from LHC simplified model
searches are imposed using SModelS and allow for light squarks and gluinos.
Moreover the upper limit on the relic abundance often favours scenarios with
long-lived particles. Searches for a Z' at the LHC remain the most unambiguous
probes of this model. Interestingly, the D-term contributions to the sfermion
masses allow to explain the anomalous magnetic moment of the muon in specific
corners of the parameter space with light smuons or left-handed (LH)
sneutrinos. We finally emphasize the interplay between direct searches for dark
matter and LHC simplified model searches.Comment: 55 pages, 29 figures; v2: references added; v3: clarifications,
mostly about presentation and summary of missing topologies, added; v4:
matches published versio
|
Probing U(1) extensions of the MSSM at the LHC Run I and in dark matter
searches
|
probing u(1) extensions of the mssm at the lhc run i and in dark matter searches
|
supersymmetric umssm accommodate boson relying stop sector. imposing searches offers viable candidates handed sneutrino neutralino. supersymmetric partners simplified searches imposed smodels squarks gluinos. relic abundance favours scenarios lived particles. searches unambiguous probes model. interestingly sfermion anomalous moment muon corners smuons handed sneutrinos. emphasize interplay searches simplified pages clarifications mostly presentation missing topologies matches versio
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non_dup
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29538842
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10.1007/JHEP09(2015)152
|
We consider renormalisable models extended in the scalar sector by a generic
scalar field in addition to the standard model Higgs boson field, and work out
the effective theory for the latter in the decoupling limit. We match the full
theory onto the effective theory at tree and one-loop levels, and concentrate
on dimension-6 operators of the Higgs and electroweak gauge fields induced from
such matching. The Wilson coefficients of these dimension-6 operators from
tree-level matching are further improved by renormalisation group running. For
specific $SU(2)_L$ representations of the scalar field, some "accidental"
couplings with the Higgs field are allowed and can lead to dimension-6
operators at tree and/or one-loop level. Otherwise, two types of interaction
terms are identified to have only one-loop contributions, for the Wilson
coefficients of which we have obtained a general formula. Using the obtained
results, we analyse constraints from electroweak oblique parameters and the
Higgs data on several phenomenological models.Comment: corrections on RGE improvemen
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Standard Model Effective Field Theory: Integrating out a Generic Scalar
|
standard model effective field theory: integrating out a generic scalar
|
renormalisable generic boson decoupling limit. match concentrate electroweak matching. wilson matching renormalisation running. representations accidental couplings level. wilson formula. analyse electroweak oblique phenomenological improvemen
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non_dup
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29540047
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10.1007/JHEP09(2015)154
|
We consider a new 3d superconformal index defined as the path integral over
$\mathbb{RP}^2 \times \mathbb{S}^1$, and get the generic formula for this index
with arbitrary number of U$(1)$ gauge symmetries via the localization
technique. We find two consistent parity conditions for the vector multiplet,
and name them $\mathcal{P}$ and $\mathcal{CP}$. We find an interesting
phenomenon that two matter multiplets coupled to the $\mathcal{CP}$-type vector
multiplet merge together. By using this effect, we investigate the simplest
version of 3d mirror symmetry on $\mathbb{RP}^2 \times \mathbb{S}^1$ and
observe four types of coincidence between the SQED and the XYZ model. We find
that merging two matters plays an important role for the agreement.Comment: 28 pages, formulas modified and comments adde
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Abelian 3d mirror symmetry on $\mathbb{RP}^2 \times \mathbb{S}^1$ with
$N_f=1$
|
abelian 3d mirror symmetry on $\mathbb{rp}^2 \times \mathbb{s}^1$ with $n_f=1$
|
superconformal mathbb mathbb generic symmetries localization technique. parity multiplet name mathcal mathcal phenomenon multiplets mathcal multiplet merge together. simplest mirror mathbb mathbb coincidence sqed model. merging matters plays pages formulas comments adde
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non_dup
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29537532
|
10.1007/JHEP09(2015)155
|
We revisit the long-standing problem of supersymmetric grand unified theory
(GUT), the doublet-triplet splitting problem. We discuss whether symmetry which
controls the {\mu} term in the minimal supersymmetric standard model is
compatible with GUT. We find that the symmetry must be broken at the GUT scale.
A similar argument also shows that the R symmetry, which is important for low
energy supersymmetry, must be broken down to a Z2R symmetry at the GUT scale.
We propose a new prescription to achieve the doublet-triplet splitting by
symmetry. There, the symmetry which controls the {\mu} term is spontaneously
broken at the GUT scale by order parameters which are charged under other
symmetries. Bilinear terms of triplet Higgses are charged under the other
symmetries, while those of doublet Higgses are not. Then triplet Higgses
directly couple to the order parameters and hence obtain GUT scale masses,
while doublet Higgses obtain suppressed masses. The broken R symmetry can be
also effectively preserved by a similar prescription. As a demonstration, we
construct an SU(5)$\times$SU(5) GUT model. We also comment on unification of
yukawa couplings.Comment: 25 pages, 4 figure
|
Mass-Splitting between Haves and Have-Nots (Symmetry vs. Grand Unified
Theory)
|
mass-splitting between haves and have-nots (symmetry vs. grand unified theory)
|
revisit standing supersymmetric grand unified doublet triplet splitting problem. supersymmetric compatible gut. broken scale. argument supersymmetry broken scale. propose prescription doublet triplet splitting symmetry. spontaneously broken symmetries. bilinear triplet higgses symmetries doublet higgses not. triplet higgses couple doublet higgses suppressed masses. broken effectively preserved prescription. demonstration model. comment unification yukawa pages
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non_dup
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[] |
29548893
|
10.1007/JHEP09(2015)156
|
Recent searches for first-generation leptoquarks and heavy right-handed $W_R$
bosons have seen excesses in final states with electrons and jets. A bizarre
property of these excesses is that they appear to violate lepton universality.
With these results in mind, we study the phenomenology of supersymmetric models
in which the Higgs arises as the sneutrino in an electron supermultiplet. Since
the electron is singled out in this approach, one can naturally account for the
lepton flavor structure of the excesses. In this work, we show that in such a
framework, one can significantly alleviate the tension between the Standard
Model and the data and yet evade current constraints from other searches.
Lastly we point out that correlated excesses are expected to be seen in future
multilepton searches.Comment: 17 pages, 7 figure
|
Sneutrino Higgs models explain lepton non-universality in CMS excesses
|
sneutrino higgs models explain lepton non-universality in cms excesses
|
searches leptoquarks handed bosons excesses jets. bizarre excesses violate lepton universality. mind phenomenology supersymmetric arises sneutrino supermultiplet. singled naturally lepton flavor excesses. alleviate tension evade searches. lastly excesses multilepton pages
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non_dup
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[] |
29550305
|
10.1007/JHEP09(2015)157
|
We compute multi-instanton amplitudes in the sine-Gordon quantum mechanics
(periodic cosine potential) by integrating out quasi-moduli parameters
corresponding to separations of instantons and anti-instantons. We propose an
extension of Bogomolnyi--Zinn-Justin prescription for multi-instanton
configurations and an appropriate subtraction scheme. We obtain the
multi-instanton contributions to the energy eigenvalue of the lowest band at
the zeroth order of the coupling constant. For the configurations with only
instantons (anti-instantons), we obtain unambiguous results. For those with
both instantons and anti-instantons, we obtain results with imaginary parts,
which depend on the path of analytic continuation. We show that the imaginary
parts of the multi-instanton amplitudes precisely cancel the imaginary parts of
the Borel resummation of the perturbation series, and verify that our results
completely agree with those based on the uniform-WKB calculations, thus
confirming the resurgence : divergent perturbation series combined with the
nonperturbative multi-instanton contributions conspire to give unambiguous
results. We also study the neutral bion contributions in the ${\mathbb
C}P^{N-1}$ model on ${\mathbb R}^1\times S^{1}$ with a small circumference,
taking account of the relative phase moduli between the fractional instanton
and anti-instanton. We find that the sign of the interaction potential depends
on the relative phase moduli, and that both the real and imaginary parts
resulting from quasi-moduli integral of the neutral bion get quantitative
corrections compared to the sine-Gordon quantum mechanics.Comment: 44 pages, 13 figures, typos corrected, references update
|
Resurgence in sine-Gordon quantum mechanics: Exact agreement between
multi-instantons and uniform WKB
|
resurgence in sine-gordon quantum mechanics: exact agreement between multi-instantons and uniform wkb
|
instanton amplitudes sine gordon mechanics cosine integrating quasi moduli separations instantons instantons. propose bogomolnyi zinn justin prescription instanton configurations subtraction scheme. instanton eigenvalue zeroth constant. configurations instantons instantons unambiguous results. instantons instantons imaginary analytic continuation. imaginary instanton amplitudes precisely cancel imaginary borel resummation perturbation verify agree confirming resurgence divergent perturbation nonperturbative instanton conspire unambiguous results. neutral bion mathbb mathbb circumference moduli fractional instanton instanton. moduli imaginary quasi moduli neutral bion sine gordon pages typos corrected update
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non_dup
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[] |
29548145
|
10.1007/JHEP09(2015)158
|
Electroweak precision observables, being highly sensitive to loop
contributions of new physics, provide a powerful tool to test the theory and to
discriminate between different models of the underlying physics. In that
context, the $W$ boson mass, $M_W$, plays a crucial role. The accuracy of the
$M_W$ measurement has been significantly improved over the last years, and
further improvement of the experimental accuracy is expected from future LHC
measurements. In order to fully exploit the precise experimental determination,
an accurate theoretical prediction for $M_W$ in the Standard Model (SM) and
extensions of it is of central importance. We present the currently most
accurate prediction for the $W$ boson mass in the Next-to-Minimal
Supersymmetric extension of the Standard Model (NMSSM), including the full
one-loop result and all available higher-order corrections of SM and SUSY type.
The evaluation of $M_W$ is performed in a flexible framework, which facilitates
the extension to other models beyond the SM. We show numerical results for the
$W$ boson mass in the NMSSM, focussing on phenomenologically interesting
scenarios, in which the Higgs signal can be interpreted as the lightest or
second lightest CP-even Higgs boson of the NMSSM. We find that, for both Higgs
signal interpretations, the NMSSM $M_W$ prediction is well compatible with the
measurement. We study the SUSY contributions to $M_W$ in detail and investigate
in particular the genuine NMSSM effects from the Higgs and neutralino sectors.Comment: 43 pages, 21 figure
|
Improved prediction for the mass of the W boson in the NMSSM
|
improved prediction for the mass of the w boson in the nmssm
|
electroweak precision observables powerful discriminate physics. boson plays crucial role. measurements. exploit precise extensions importance. boson supersymmetric nmssm susy type. flexible facilitates boson nmssm focussing phenomenologically scenarios interpreted lightest lightest boson nmssm. interpretations nmssm compatible measurement. susy genuine nmssm neutralino pages
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non_dup
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[] |
29546715
|
10.1007/JHEP09(2015)159
|
We study the viability of five-dimensional gauge theories as candidates for
the origin of the Higgs field and its mechanism for spontaneous symmetry
breaking. Within the framework of lattice field theory, we consider the
simplest model of an $SU(2)$ gauge theory. We construct this theory on a
five-dimensional orbifold which explicitly breaks the gauge symmetry to $U(1)$
at the fixed points of the orbifold. Using anisotropic gauge couplings, we find
that this theory exhibits three distinct phases which we label as confined,
Higgs and hybrid. Within the Higgs phase, close to the Higgs-hybrid phase
transition, we find that the ratio of the Higgs to gauge boson masses takes
Standard Model-like values. Precisely in this region of the phase diagram, we
find dimensional reduction via localisation.Comment: Version accepted for publication in JHEP. 36 pages, 13 figure
|
Five-Dimensional Gauge-Higgs Unification: A Standard Model-Like Spectrum
|
five-dimensional gauge-higgs unification: a standard model-like spectrum
|
viability candidates spontaneous breaking. simplest theory. orbifold explicitly breaks orbifold. anisotropic couplings exhibits label confined hybrid. hybrid boson values. precisely publication jhep. pages
|
non_dup
|
[] |
29527465
|
10.1007/JHEP09(2015)160
|
We construct planar black hole solutions in AdS_3 and AdS_4 in which the
boundary CFT is perturbed by marginally relevant quenched disorder. We show
that the entropy density of the horizon has the scaling temperature dependence
s \sim T^{(d-1)/z} (with d=2,3). The dynamical critical exponent z is computed
numerically and, at weak disorder, analytically. These results lend support to
the claim that the perturbed CFT flows to a disordered quantum critical theory
in the IR.Comment: 1+22 pages. 4 figure
|
Emergent scale invariance of disordered horizons
|
emergent scale invariance of disordered horizons
|
planar perturbed marginally quenched disorder. horizon exponent numerically disorder analytically. lend claim perturbed flows disordered pages.
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non_dup
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[] |
29549485
|
10.1007/JHEP09(2015)162
|
We explore an extension of the Standard Model by an additional U (1) gauge
group and a complex scalar Higgs portal. As the scalar is charged under this
gauge factor this simple model supplies a vector dark matter candidate
satisfying the observed relic abundance and limits from direct dark matter
searches. An additional Higgs-like state, that may be heavier or lighter than
the observed Higgs, is present and satisfies LEP and LHC bounds whilst allowing
for absolute stability of the electroweak vacuum in a range of parameter space.Comment: 32 pages, 18 figures, v2: references added, minor corrections,
published in JHE
|
A stable Higgs portal with vector dark matter
|
a stable higgs portal with vector dark matter
|
explore portal. supplies candidate satisfying relic abundance searches. heavier lighter satisfies bounds whilst allowing electroweak pages minor
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non_dup
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[] |
29505057
|
10.1007/JHEP09(2015)163
|
We describe the gravity duals of four-dimensional N=1 superconformal field
theories obtained by wrapping M5-branes on a punctured Riemann surface. The
internal geometry, normal to the AdS5 factor, generically preserves two U(1)s,
with generators (J+,J-), that are fibered over the Riemann surface. The metric
is governed by a single potential that satisfies a version of the Monge-Ampere
equation. The spectrum of N=1 punctures is given by the set of supersymmetric
sources of the potential that are localized on the Riemann surface and lead to
regular metrics near a puncture. We use this system to study a class of
punctures where the geometry near the sources corresponds to M-theory
description of D6-branes. These carry a natural (p,q) label associated to the
circle dual to the killing vector (p J+ + q J-) which shrinks near the source.
In the generic case the world volume of the D6-branes is AdS5 X S^2 and they
locally preserve N=2 supersymmetry. When p=-q, the shrinking circle is dual to
a flavor U(1). The metric in this case is non-degenerate only when there are
co-dimension one sources, M9-branes, obtained by smearing M5-branes that wrap
the AdS5 factor and the circle dual the superconformal R-symmetry. In the IIA
limit, they can interpreted as D8-branes. The D6-branes are extended along the
AdS5 and on cups that end on the co-dimension one branes. In the special case
when the shrinking circle is dual to the R-symmetry, the D6-branes are extended
along the AdS5 and wrap an auxiliary Riemann surface with an arbitrary genus.
When the Riemann surface is compact with constant curvature, the system is
governed by a Monge-Ampere equation.Comment: 35 page
|
AdS5 solutions from M5-branes on Riemann surface and D6-branes sources
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ads5 solutions from m5-branes on riemann surface and d6-branes sources
|
duals superconformal wrapping branes punctured riemann surface. generically preserves generators fibered riemann surface. governed satisfies monge ampere equation. punctures supersymmetric localized riemann metrics puncture. punctures branes. carry label circle killing shrinks source. generic branes locally preserve supersymmetry. shrinking circle flavor degenerate branes smearing branes wrap circle superconformal symmetry. interpreted branes. branes cups branes. shrinking circle branes wrap auxiliary riemann genus. riemann curvature governed monge ampere
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non_dup
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[] |
25038643
|
10.1007/JHEP09(2015)165
|
We study various scaling behaviors of n-partite information during a process
of thermalization after a global quantum quench for n disjoint system
consisting of n parallel strips whose widths are much larger than the
separation between them. By making use of the holographic description for
entanglement entropy we explore holographic description of the n-partite
information by which we show that it has a definite sign: it is positive for
even n and negative for odd n. This might be thought of as an intrinsic
property of a field theory which has gravity dual.Comment: 48 pages, 29 figures; v2: Reference added; v3: Few comments and
numerical results added; v4: minor modifications to match published versio
|
On the Time Evolution of Holographic n-partite Information
|
on the time evolution of holographic n-partite information
|
behaviors partite thermalization quench disjoint consisting strips widths them. holographic entanglement explore holographic partite definite thought intrinsic pages comments minor modifications match versio
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non_dup
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[] |
29560336
|
10.1007/JHEP09(2015)166
|
We establish the factorization formula for scalar Glueball production through
radiative decays of vector states of heavy quarkonia, e.g. $J/\psi$, $\psi(2S)$
and $\Upsilon(nS)$, where the Glueball mass is much less than the parent heavy
quarkonium mass. The factorization is demonstrated explicitly at one-loop level
through the next-to-leading order (NLO) corrections to the hard kernel, the
non-relativistic QCD (NRQCD) long-distance matrix element (LDMEs) of the heavy
quarkonium, and the light-cone distribution amplitude (LCDA) of scalar
Glueball. The factorization provides a comprehensive theoretical approach to
investigate Glueball production in the radiative decays of vector states of
heavy quarkonia and to determine the physic nature of Glueball. We discuss the
scale evolution equation of LCDA for scalar Glueball. In the end, we extract
the value of the decay constant of Scalar Glueball from Lattice QCD calculation
and analyze the mixing effect among $f_0(1370)$, $f_0(1500)$ and $f_0(1710)$.Comment: 15 pages, 3 figures, and 1 table; version to appear in JHE
|
Factorization for radiative heavy quarkonium decays into scalar Glueball
|
factorization for radiative heavy quarkonium decays into scalar glueball
|
establish factorization glueball radiative decays quarkonia e.g. upsilon glueball parent quarkonium mass. factorization explicitly kernel relativistic nrqcd ldmes quarkonium cone lcda glueball. factorization comprehensive glueball radiative decays quarkonia physic glueball. lcda glueball. extract glueball analyze .comment pages
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non_dup
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[] |
29532767
|
10.1007/JHEP09(2015)167
|
We study the solution of the Schlesinger system for the 4-point
$\mathfrak{sl}_N$ isomonodromy problem and conjecture an expression for the
isomonodromic $\tau$-function in terms of 2d conformal field theory beyond the
known $N=2$ Painlev\'e VI case. We show that this relation can be used as an
alternative definition of conformal blocks for the $W_N$ algebra and argue that
the infinite number of arbitrary constants arising in the algebraic
construction of $W_N$ conformal block can be expressed in terms of only a
finite set of parameters of the monodromy data of rank $N$ Fuchsian system with
three regular singular points. We check this definition explicitly for the
known conformal blocks of the $W_3$ algebra and demonstrate its consistency
with the conjectured form of the structure constants.Comment: 22 pages, 7 figures; version to appear in JHE
|
Isomonodromic $\tau$-functions and $W_N$ conformal blocks
|
isomonodromic $\tau$-functions and $w_n$ conformal blocks
|
schlesinger mathfrak isomonodromy conjecture isomonodromic conformal painlev case. conformal blocks argue infinite arising algebraic conformal monodromy fuchsian singular points. check explicitly conformal blocks consistency conjectured pages
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non_dup
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[] |
29518432
|
10.1007/JHEP09(2015)168
|
We obtain holographic realizations for systems that have strong similarities
to Mott insulators and supersolids, after examining the ground states of
Einstein-Maxwell-scalar systems. The real part of the AC conductivity has a
hard gap and a discrete spectrum only. We add momentum dissipation to resolve
the delta function in the conductivity due to translational invariance. We
develop tools to directly calculate the Drude weight for a large class of
solutions and to support our claims. Numerical RG flows are also constructed to
verify that such saddle points are IR fixed points of asymptotically AdS_4
geometries.Comment: 52 pages, jheppub, 15 figures; v2: minor corrections, references
adde
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On Holographic Insulators and Supersolids
|
on holographic insulators and supersolids
|
holographic realizations similarities mott insulators supersolids examining einstein maxwell systems. conductivity only. dissipation resolve delta conductivity translational invariance. drude claims. flows verify saddle asymptotically pages jheppub minor adde
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non_dup
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[] |
29535247
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10.1007/JHEP09(2015)169
|
The spin-dependent cross sections for semi-inclusive lepton-nucleon
scattering are derived in the framework of collinear factorization, including
the effects of masses of the target and produced hadron at finite momentum
transfer squared Q^2. At leading order the cross sections factorize into
products of parton distribution and fragmentation functions evaluated in terms
of new, mass-dependent scaling variables. The size of the hadron mass
corrections is estimated at kinematics relevant for future semi-inclusive
deep-inelastic scattering experiments.Comment: 28 pages, 12 figures, published versio
|
Hadron mass corrections in semi-inclusive deep-inelastic scattering
|
hadron mass corrections in semi-inclusive deep-inelastic scattering
|
inclusive lepton nucleon collinear factorization hadron squared factorize parton fragmentation variables. hadron kinematics inclusive inelastic pages versio
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non_dup
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[] |
29526208
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10.1007/JHEP09(2015)173
|
We study the behavior of the entanglement entropy in $(2+1)$--dimensional
strongly coupled theories via the AdS/CFT correspondence. We consider theories
at a finite charge density with a magnetic field, with their holographic dual
being Einstein-Maxwell-Dilaton theory in four dimensional anti--de Sitter
gravity. Restricting to black hole and electron star solutions at zero
temperature in the presence of a background magnetic field, we compute their
holographic entanglement entropy using the Ryu-Takayanagi prescription for both
strip and disk geometries. In the case of the electric or magnetic zero
temperature black holes, we are able to confirm that the entanglement entropy
is invariant under electric-magnetic duality. In the case of the electron star
with a finite magnetic field, for the strip geometry, we find a discontinuity
in the first derivative of the entanglement entropy as the strip width is
increased.Comment: 30 pages, 15 figures; updated to match the published version; new
figure added for part of the phase diagram, references updated, typos fixed,
clarification and additional explanations added in the introduction and
section
|
Entanglement Entropy of Magnetic Electron Stars
|
entanglement entropy of magnetic electron stars
|
entanglement correspondence. holographic einstein maxwell dilaton sitter gravity. restricting holographic entanglement takayanagi prescription strip geometries. holes confirm entanglement duality. strip discontinuity entanglement strip pages updated match updated typos clarification explanations
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non_dup
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[] |
78069841
|
10.1007/JHEP09(2015)175
|
After the publication of this work we have found a small mistake in our implementation of the Glauber Monte-Carlo for the collision geometry, which resulted in an incorrect distribution of the points in the transverse plane at which our jets were created, for collisions within each centrality bin. After correcting this, the fitted values of κ[subscript s]c, κ[subscript rad] and κ[subscript coll] in the current version of this paper are slightly smaller than previously reported. This correction also results in small (hardly visible) changes to all the plots in this paper, which we have corrected. Neither the changes to the fitted values of the κ’s nor the changes to the figures affect any discussion or any conclusions of this work; we have made no changes to the wording in any discussion of any figure or result. We have also reduced the p[subscript T]-cut of our PYTHIA simulations from 70 GeV to 50 GeV to further reduce the sensitivity of our computations to this cut.United States. Department of Energy (cooperative research agreement DE-FG0205ER41360
|
Erratum to: A hybrid strong/weak coupling approach to jet quenching
|
erratum to: a hybrid strong/weak coupling approach to jet quenching
|
publication mistake glauber monte carlo collision resulted incorrect jets created collisions centrality bin. correcting fitted subscript subscript subscript coll reported. hardly visible plots corrected. neither fitted wording result. subscript pythia computations cut.united states. cooperative
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non_dup
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29551782
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10.1007/JHEP09(2015)177
|
We study supersymmetry breaking in theories with non-minimal multiplets (such
as the complex linear or CNM multiplets), by using superspace higher derivative
terms which give rise to new supersymmetry breaking vacuum solutions on top of
the standard supersymmetric vacuum. We illustrate the decoupling of the
additional massive sectors inside the complex linear and the CNM multiplets and
show that only the Goldstino sector is left in the low energy limit. We also
discuss the duality between non-minimal scalar multiplets and chiral multiplets
in the presence of superspace higher derivatives. From the superspace Noether
procedure we calculate the supercurrents, and we show that in the supersymmetry
breaking vacuum the chiral superfield X which enters the Ferrara-Zumino
supercurrent conservation equation does indeed flow in the IR to the chiral
constrained Goldstino superfield. We also provide a description of the
Goldstino sector in terms of the Samuel-Wess superfield for the supersymmetry
breaking mechanism at hand.Comment: 31 pages. v4: discussion and references adde
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Non-minimal scalar multiplets, supersymmetry breaking and dualities
|
non-minimal scalar multiplets, supersymmetry breaking and dualities
|
supersymmetry breaking multiplets multiplets superspace supersymmetry breaking supersymmetric vacuum. illustrate decoupling massive sectors multiplets goldstino limit. duality multiplets chiral multiplets superspace derivatives. superspace noether supercurrents supersymmetry breaking chiral superfield enters ferrara zumino supercurrent conservation chiral constrained goldstino superfield. goldstino samuel wess superfield supersymmetry breaking pages. adde
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non_dup
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[] |
29510723
|
10.1007/JHEP09(2015)180
|
Entanglement entropy in the vacuum state of local field theories exhibits an
area law. However, nonlocal theories at large N and strong coupling violate
this area law. In these theories, the leading divergence in the entanglement
entropy is extensive for regions smaller than the effective nonlocality scale
and proportional to this effective nonlocality scale for regions larger than
it. This raises the question: is a volume law a generic feature of nonlocal
theories, or is it only present at strong coupling and large N?
This paper investigates entanglement entropy of large regions in weakly
coupled nonlocal theories, to leading order in the coupling. The two theories
studied are phi^4 theory on the noncommutative plane and phi^4 theory with a
dipole type nonlocal modification using a fixed nonlocality scale. Both
theories are found to follow an area law to first order in the coupling, hence
no evidence is found for a volume law. This indicates that, perturbatively the
nonlocal interactions considered are not generating sufficient entanglement at
distances of the nonlocality scale to change the leading divergence, at least
to first order in the coupling. An argument against volume laws at higher
orders is also presented.Comment: 25 pages, 3 figures; v2 added reference
|
Perturbative entanglement entropy in nonlocal theories
|
perturbative entanglement entropy in nonlocal theories
|
entanglement exhibits law. nonlocal violate law. divergence entanglement extensive nonlocality nonlocality raises generic nonlocal investigates entanglement weakly nonlocal coupling. noncommutative dipole nonlocal modification nonlocality scale. law. perturbatively nonlocal generating entanglement distances nonlocality divergence coupling. argument laws orders pages
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non_dup
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29538662
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10.1007/JHEP09(2015)182
|
We construct the Killing(-Yano) tensors for a large class of charged black
holes in higher dimensions and study general properties of such tensors, in
particular, their behavior under string dualities. Killing(-Yano) tensors
encode the symmetries beyond isometries, which lead to insights into dynamics
of particles and fields on a given geometry by providing a set of conserved
quantities. By analyzing the eigenvalues of the Killing tensor, we provide a
prescription for constructing several conserved quantities starting from a
single object, and we demonstrate that Killing tensors in higher dimensions are
always associated with ellipsoidal coordinates. We also determine the
transformations of the Killing(-Yano) tensors under string dualities, and find
the unique modification of the Killing-Yano equation consistent with these
symmetries. These results are used to construct the explicit form of the
Killing(-Yano) tensors for the Myers-Perry black hole in arbitrary number of
dimensions and for its charged version.Comment: 87 pages. V2: typos are corrected, appendix C and references are
added. V3: several typos are fixe
|
Killing(-Yano) Tensors in String Theory
|
killing(-yano) tensors in string theory
|
killing yano tensors holes tensors dualities. killing yano tensors encode symmetries isometries insights conserved quantities. analyzing eigenvalues killing prescription constructing conserved quantities killing tensors ellipsoidal coordinates. transformations killing yano tensors dualities modification killing yano symmetries. killing yano tensors myers perry pages. typos corrected added. typos fixe
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non_dup
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[] |
35086134
|
10.1007/JHEP09(2015)205
|
We consider a deformation of the well-known stu model of N = 2, D = 4 supergravity, characterized by a non-homogeneous special Kähler manifold, and by the smallest electric-magnetic duality Lie algebra consistent with its upliftability to five dimensions. We explicitly solve the BPS attractor equations and construct static supersymmetric black holes with radial symmetry, in the context of U(1) dyonic Fayet-Iliopoulos gauging, focussing on axion-free solutions. Due to non-homogeneity of the scalar manifold, the model evades the analysis recently given in the literature. The relevant physical properties of the resulting black hole solution are discussed
|
BPS black holes in a non-homogeneous deformation of the stu model of N = 2, D = 4 gauged supergravity
|
bps black holes in a non-homogeneous deformation of the stu model of n = 2, d = 4 gauged supergravity
|
deformation supergravity homogeneous kähler manifold smallest duality upliftability dimensions. explicitly solve attractor supersymmetric holes dyonic fayet iliopoulos gauging focussing axion solutions. homogeneity manifold evades literature.
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non_dup
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[] |
60653671
|
10.1007/JHEP09(2015)210
|
Journal of High Energy Physics 2015.9 (2015): 210 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA)The measured values of the Higgs and top quark masses imply that the Standard Model potential is very likely to be unstable at large Higgs values. This is particularly problematic during inflation, which sources large perturbations of the Higgs. The instability could be cured by a threshold effect induced by a scalar with a large vacuum expectation value and directly connected to the Standard Model through a Higgs portal coupling. However, we find that in a minimal model in which the scalar generates inflation, this mechanism does not stabilize the potential because the mass required for inflation is beyond the instability scale. This conclusion does not change if the Higgs has a direct weak coupling to the scalar curvature. On the other hand, if the potential is absolutely stable, successful inflation in agreement with current CMB data can occur along a valley of the potential with a Mexican hat profile. We revisit the stability conditions, independently of inflation, and clarify that the threshold effect cannot work if the Higgs portal coupling is too small. We also show that inflation in a false Higgs vacuum appearing radiatively for a tuned ratio of the Higgs and top masses leads to an amplitude of primordial gravitational waves that is far too high, ruling out this possibilityGB thanks Perimeter Institute for hospitality at the very beginning of this work. Research
at Perimeter Institute is supported in part by the Government of Canada through Industry
Canada, and by the Province of Ontario through the Ministry of Research and Information
(MRI). GB thanks as well the Departament de Física Fondamental at the Universitat
de Barcelona and the CERN Theory Division for hospitality at different stages of this
work. CT acknowledges support of the Spanish Government through grant FPA2011-24568 (MICINN), and thanks Rhorry Gauld and Anupam Mazumdar for useful conversations. GB thanks Brando Bellazzini, Alberto Casas, Mikael Chala, José Ramón Espinosa, Mathias Garny, Gian Giudice and Felix Kahlhoefer for valuable discussions and comments on a draft version of this work. We also thank Isabella Masina and Alessio Notari for useful exchange
|
Higgs portal valleys, stability and inflation
|
higgs portal valleys, stability and inflation
|
reproduced permission scuola internazionale superiore studi avanzati sissa imply unstable values. problematic inflation perturbations higgs. instability cured expectation portal coupling. generates inflation stabilize inflation instability scale. curvature. absolutely successful inflation valley mexican profile. revisit independently inflation clarify portal small. inflation false appearing radiatively tuned primordial gravitational ruling possibilitygb thanks perimeter hospitality beginning work. perimeter canada canada province ontario ministry thanks departament física fondamental universitat barcelona cern division hospitality work. acknowledges spanish micinn thanks rhorry gauld anupam mazumdar conversations. thanks brando bellazzini alberto casas mikael chala josé ramón espinosa mathias garny gian giudice felix kahlhoefer valuable discussions comments draft work. isabella masina alessio notari
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non_dup
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[] |
35089007
|
10.1007/JHEP09(2015)213
|
We study the dynamics of a strongly-coupled quantum field theory in a cosmological spacetime using the holographic AdS/CFT correspondence. Specifically we consider a confining gauge theory in an expanding FRW universe and track the evolution of the stress-energy tensor during a period of expansion, varying the initial temperature as well as the rate and amplitude of the expansion. At strong coupling, particle production is inseparable from entropy production. Consequently, we find significant qualitative differences from the weak coupling results: at strong coupling the system rapidly loses memory of its initial state as the amplitude is increased. Furthermore, in the regime where the Hubble parameter is much smaller than the initial temperature, the dynamics is well-modelled as a plasma evolving hydrodynamically
|
Cosmological particle production at strong coupling
|
cosmological particle production at strong coupling
|
cosmological spacetime holographic correspondence. confining expanding universe track expansion. inseparable production. qualitative rapidly loses increased. hubble modelled evolving hydrodynamically
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non_dup
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[] |
29560099
|
10.1007/JHEP09(2015)216
|
Pair production of Higgs bosons at hadron colliders is an enticing channel to
search for new physics. New colored particles that couple strongly to the
Higgs, such as those most often called upon to address the hierarchy problem,
provide well motivated examples in which large enhancements of the di-Higgs
rate are possible, at least in principle. However, in such scenarios the
di-Higgs production rate is tightly correlated with the single Higgs production
rate and, since the latter is observed to be SM-like, one generally expects
that only modest enhancements in di-Higgs production are allowed by the LHC Run
1 data. We examine the contribution of top squarks (stops) in a simplified
supersymmetry model to di-Higgs production and find that this general
expectation is indeed borne out. In particular, the allowed deviations are
typically small, but there are tuned regions of parameter space where
expectations based on EFT arguments break down in which order 100% enhancements
to the di-Higgs production rate are possible and are simultaneously consistent
with the observed single Higgs production rates. These effects are potentially
observable with the high luminosity run of the LHC or at a future hadron
collider.Comment: 16 pages + refrences; v2 updated references; v3 Published versio
|
Putting a Stop to di-Higgs Modifications
|
putting a stop to di-higgs modifications
|
bosons hadron colliders enticing physics. colored couple hierarchy motivated enhancements principle. scenarios tightly expects modest enhancements data. examine squarks stops simplified supersymmetry expectation borne out. deviations tuned expectations arguments break enhancements simultaneously rates. potentially observable luminosity hadron pages refrences updated versio
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non_dup
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42746591
|
10.1007/JHEP09(2016)002
|
We study time evolution of distance between thermal states excited by local
operators, with different external couplings. We find that growth of the
distance implies growth of commutators of operators, signifying the local
excitations are scrambled. We confirm this growth of distance by holographic
computation, by evaluating volume of codimension 1 extremal volume surface. We
find that the distance increases exponentially as $e^{\frac{2\pi t}{\beta}}$.
Our result implies that, in chaotic system, trajectories of excited thermal
states exhibit high sensitivity to perturbation to the Hamiltonian, and the
distance between them will be significant at the scrambling time. We also
confirm the decay of two point function of holographic Wilson loops on
thermofield double state.Comment: 10 pages, 3 figures, reference added, minor modification
|
Butterflies from Information Metric
|
butterflies from information metric
|
excited couplings. commutators signifying excitations scrambled. confirm holographic evaluating codimension extremal surface. exponentially frac beta chaotic trajectories excited exhibit perturbation scrambling time. confirm holographic wilson loops thermofield pages minor modification
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non_dup
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42665246
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10.1007/JHEP09(2016)003
|
Using the Sen's entropy function formalism, we compute the entropy for the
extremal dyonic black hole solutions of theories in the presence of dilaton
field coupled to the field strength and a dilaton potential. We solve the
attractor equations analytically and determine the near horizon metric, the
value of the scalar fields and the electric field on the horizon, and
consequently the entropy of these black holes. The attractor mechanism plays a
very important role for these systems, and after studying the simplest systems
involving dilaton fields, we propose a general ansatz for the value of the
scalar field on the horizon, which allows us to solve the attractor equations
for gauged supergravity theories in $AdS_4$ spaces. In particular, we derive an
expression for the dyonic black hole entropy for the $\mathcal{N}=8$ gauged
supergravity in 4 dimensions which does not contain explicitly the gauge
parameter of the potential.Comment: 17 pages, no figures. Published versio
|
Dyonic AdS_4 black hole entropy and attractors via entropy function
|
dyonic ads_4 black hole entropy and attractors via entropy function
|
formalism extremal dyonic dilaton dilaton potential. solve attractor analytically horizon horizon holes. attractor plays studying simplest involving dilaton propose ansatz horizon solve attractor gauged supergravity spaces. derive dyonic mathcal gauged supergravity explicitly pages figures. versio
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non_dup
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42737657
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10.1007/JHEP09(2016)005
|
The direct photon spectrum is computed to the highest currently available
precision and compared to ATLAS data from 8 TeV collisions at the LHC. The
prediction includes threshold resummation at next-to-next-to-next-to-leading
logarithmic order through the program PeTeR, matched to next-to-leading fixed
order with fragmentation effects using JetPhox and includes the resummation of
leading-logarithmic electroweak Sudakov effects. Remarkably, improved agreement
with data can be seen when each component of the calculation is added
successively. This comparison demonstrates the importance of both threshold
logs and electroweak Sudakov effects. Numerical values for the predictions are
included.Comment: 18 pages, 22 plots, 4 table
|
Precision direct photon spectra at high energy and comparison to the 8
TeV ATLAS data
|
precision direct photon spectra at high energy and comparison to the 8 tev atlas data
|
precision atlas collisions lhc. resummation logarithmic peter matched fragmentation jetphox resummation logarithmic electroweak sudakov effects. remarkably successively. demonstrates logs electroweak sudakov effects. pages plots
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non_dup
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42749740
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10.1007/JHEP09(2016)006
|
Planar zeros are studied in the context of the five-point scattering
amplitude for gauge bosons and gravitons. In the case of gauge theories, it is
found that planar zeros are determined by an algebraic curve in the projective
plane spanned by the three stereographic coordinates labelling the direction of
the outgoing momenta. This curve depends on the values of six independent color
structures. Considering the gauge group SU(N) with N=2,3,5 and fixed color
indices, the class of curves obtained gets broader by increasing the rank of
the group. For the five-graviton scattering, on the other hand, we show that
the amplitude vanishes whenever the process is planar, without imposing further
kinematic conditions. A rationale for this result is provided using
color-kinematics duality.Comment: 26 pages, 12 figures. v2: minor changes, typos corrected and
reference added. It matches the version to appear in Journal of High Energy
Physic
|
Planar Zeros in Gauge Theories and Gravity
|
planar zeros in gauge theories and gravity
|
planar zeros bosons gravitons. planar zeros algebraic projective spanned stereographic labelling outgoing momenta. structures. indices gets broader group. graviton vanishes whenever planar imposing kinematic conditions. rationale kinematics pages figures. minor typos corrected added. matches physic
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non_dup
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42742510
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10.1007/JHEP09(2016)009
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In three dimensional ${\cal N}=4$ Chern-Simons-matter theories two
independent fermionic Wilson loop operators can be defined, which preserve half
of the supersymmetry charges and are cohomologically equivalent at classical
level. We compute their three-loop expectation value in a convenient color
sector and prove that the degeneracy is uplifted by quantum corrections. We
expand the matrix model prediction in the same regime and by comparison we
conclude that the quantum 1/2 BPS Wilson loop is the average of the two
operators. We provide an all-loop argument to support this claim at any order.
As a by-product, we identify the localization result at three loops as a
correction to the framing factor induced by matter interactions. Finally, we
comment on the quantum properties of the non-1/2 BPS Wilson loop operator
defined as the difference of the two fermionic ones.Comment: 22 pages + appendixes, 4 figures, 1 Tabl
|
The quantum 1/2 BPS Wilson loop in ${\cal N}=4$ Chern-Simons-matter
theories
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the quantum 1/2 bps wilson loop in ${\cal n}=4$ chern-simons-matter theories
|
chern simons fermionic wilson preserve supersymmetry charges cohomologically level. expectation convenient degeneracy uplifted corrections. expand wilson operators. argument claim order. localization loops framing interactions. comment wilson fermionic pages appendixes tabl
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non_dup
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[] |
42747666
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10.1007/JHEP09(2016)010
|
We study three-point functions of single-trace operators in the su(1|1)
sector of planar N = 4 SYM borrowing several tools based on Integrability. In
the most general configuration of operators in this sector, we have found a
determinant expression for the tree-level structure constants. We then compare
the predictions of the recently proposed hexagon program against all available
data. We have obtained a match once additional sign factors are included when
the two hexagon form-factors are assembled together to form the structure
constants. In the particular case of one BPS and two non-BPS operators we
managed to identify the relevant form-factors with a domain wall partition
function of a certain six-vertex model. This partition function can be
explicitly evaluated and factorizes at all loops. In addition, we use this
result to compute the structure constants and show that at strong coupling in
the so-called BMN regime, its leading order contribution has a determinant
expression.Comment: 26 page
|
Fermionic Correlators from Integrability
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fermionic correlators from integrability
|
trace planar borrowing integrability. determinant constants. hexagon data. match hexagon assembled constants. managed partition model. partition explicitly factorizes loops. determinant
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non_dup
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[] |
42708667
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10.1007/JHEP09(2016)011
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We study the instability, for the supersymmetric Yang-Mills (SYM) theories,
caused by the external electric field through the imaginary part of the action
of the D7 probe brane, which is embedded in the background of type IIB theory.
This instability is related to the Schwinger effect, namely to the quark pair
production due to the external electric field, for the $SU(N_c)$ SYM theories.
In this holographic approach, it is possible to calculate the Schwinger effect
for various phases of the theories. Here we give the calculation for ${\cal
N}=2$ SYM theory and the analysis is extended to the finite temperature
deconfinement and the zero temperature confinement phases of the Yang-Mills
(YM) theory. By comparing the obtained production rates with the one of the
supersymmetric case, the dynamical quark mass is estimated and we find how it
varies with the chiral condensate. Based on this analysis, we give a
speculation on the extension of the Nambu-Jona-Lasinio model to the finite
temperature YM theory, and four fermi coupling is evaluated in the confinement
theory.Comment: 25 pages, 12 figure
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Holographic Schwinger Effect and Chiral condensate in SYM Theory
|
holographic schwinger effect and chiral condensate in sym theory
|
instability supersymmetric mills imaginary brane embedded theory. instability schwinger theories. holographic schwinger theories. deconfinement confinement mills theory. supersymmetric varies chiral condensate. speculation nambu jona lasinio fermi confinement pages
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non_dup
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[] |
42739491
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10.1007/JHEP09(2016)012
|
We study the topological entanglement negativity between two spatial regions
in (2+1)-dimensional Chern-Simons gauge theories by using the replica trick and
the surgery method. For a bipartitioned or tripartitioned spatial manifold, we
show how the topological entanglement negativity depends on the presence of
quasiparticles and the choice of ground states. In particular, for two adjacent
non-contractible regions on a tripartitioned torus, the entanglement negativity
provides a simple way to distinguish Abelian and non-Abelian theories. Our
method applies to a Chern-Simons gauge theory defined on an arbitrary oriented
(2+1)-dimensional spacetime manifold. Our results agree with the edge theory
approach in a recent work (X. Wen, S. Matsuura and S. Ryu, arXiv:1603.08534).Comment: 34 pages, 12 figures; v2: reference adde
|
Topological entanglement negativity in Chern-Simons theories
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topological entanglement negativity in chern-simons theories
|
topological entanglement negativity chern simons replica trick method. bipartitioned tripartitioned manifold topological entanglement negativity quasiparticles states. adjacent contractible tripartitioned torus entanglement negativity distinguish abelian abelian theories. applies chern simons oriented spacetime manifold. agree matsuura .comment pages adde
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non_dup
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[] |
42735662
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10.1007/JHEP09(2016)014
|
Motivated by gauge coupling unification and dark matter, we present an
extension to the Standard Model where both are achieved by adding an extra new
matter multiplet. Such considerations lead to a Grand Unified Theory with very
heavy WIMPzilla dark matter, which has mass greater than ~10^7 GeV and must be
produced before reheating ends. Naturally, we refer to this scenario as
GUTzilla dark matter. Here we present a minimal GUTzilla model, adding a
vector-like quark multiplet to the Standard Model. Proton decay constraints
require the new multiplet to be both color and electroweak charged, which
prompts us to include a new confining SU(3) gauge group that binds the
multiplet into a neutral composite dark matter candidate. Current direct
detection constraints are evaded due to the large dark matter mass; meanwhile,
next-generation direct detection and proton decay experiments will probe much
of the parameter space. The relic abundance is strongly dependent on the
dynamics of the hidden confining sector, and we show that dark matter
production during the epoch of reheating can give the right abundance.Comment: 21 pages, 6 figure
|
GUTzilla Dark Matter
|
gutzilla dark matter
|
motivated unification adding extra multiplet. considerations grand unified wimpzilla reheating ends. naturally gutzilla matter. gutzilla adding multiplet model. proton multiplet electroweak prompts confining binds multiplet neutral composite candidate. evaded meanwhile proton space. relic abundance hidden confining epoch reheating pages
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non_dup
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[] |
42728383
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10.1007/JHEP09(2016)015
|
In this paper, we study the entanglement entropy in a large class of states
of two-dimensional conformal field theory in the the large central charge
limit. This class of states includes the states created by the insertion of a
finite number of local heavy operators. By using the monodromy analysis, we
obtain the leading order entanglement entropy for the general state. We show
that it is exactly captured by the Ryu-Takayanagi formula, by using the
Wilsonian line prescription in the Chern-Simons formulation of the AdS$_3$
gravity.Comment: 18 pages: References added;Title slightly modified, more
clarificatio
|
Holographic Entanglement Entropy For a Large Class of States in 2D CFT
|
holographic entanglement entropy for a large class of states in 2d cft
|
entanglement conformal limit. created insertion operators. monodromy entanglement state. captured takayanagi wilsonian prescription chern simons formulation pages title clarificatio
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non_dup
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[] |
42690438
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10.1007/JHEP09(2016)016
|
We investigate the implications of one light eV scale sterile neutrino on the
physics potential of the proposed long-baseline experiment DUNE. If the future
short-baseline experiments confirm the existence of sterile neutrinos, then it
can affect the mass hierarchy (MH) and CP-violation (CPV) searches at DUNE. The
MH sensitivity still remains above 5$\sigma$ if the three new mixing angles
($\theta_{14}, \theta_{24}, \theta_{34}$) are all close to $\theta_{13}$. In
contrast, it can decrease to 4$\sigma$ if the least constrained mixing angle
$\theta_{34}$ is close to its upper limit $\sim 30^0$. We also assess the
sensitivity to the CPV induced both by the standard CP-phase $\delta_{13}
\equiv \delta$, and the new CP-phases $\delta_{14}$ and $\delta_{34}$. In the
3+1 scheme, the discovery potential of CPV induced by $\delta_{13}$ gets
deteriorated compared to the 3$\nu$ case. In particular, the maximal
sensitivity (reached around $\delta_{13}$ $\sim$ $\pm$ $90^0$) decreases from
$5\sigma$ to $4\sigma$ if all the three new mixing angles are close to
$\theta_{13}$. It can further diminish to almost $3\sigma$ if $\theta_{34}$ is
large ($\sim 30^0$). The sensitivity to the CPV due to $\delta_{14}$ can reach
3$\sigma$ for an appreciable fraction of its true values. Interestingly,
$\theta_{34}$ and its associated phase $\delta_{34}$ can influence both the
$\nu_e$ appearance and $\nu_\mu$ disappearance channels via matter effects,
which in DUNE are pronounced. Hence, DUNE can also probe CPV induced by
$\delta_{34}$ provided $\theta_{34}$ is large. We also reconstruct the two
phases $\delta_{13}$ and $\delta_{14}$. The typical 1$\sigma$ uncertainty on
$\delta_{13}$ ($\delta_{14}$) is $\sim20^0$ ($30^0$) if $\theta_{34} =0$. The
reconstruction of $\delta_{14}$ (but not that of $\delta_{13}$) degrades if
$\theta_{34}$ is large.Comment: 26 pages, 8 figures, 2 tables. Minor revisions. Accepted in JHE
|
Physics Reach of DUNE with a Light Sterile Neutrino
|
physics reach of dune with a light sterile neutrino
|
sterile dune. confirm sterile neutrinos hierarchy violation searches dune. sigma angles theta theta theta theta sigma constrained theta delta equiv delta delta delta discovery delta gets deteriorated case. maximal reached delta sigma sigma angles theta diminish sigma theta delta sigma appreciable values. interestingly theta delta appearance disappearance dune pronounced. dune delta theta large. reconstruct delta delta sigma delta delta theta reconstruction delta delta degrades theta pages tables. minor revisions.
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non_dup
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[] |
42730577
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10.1007/JHEP09(2016)018
|
We analyse a combination of ATLAS and CMS searches for dijet resonances at
run I and run II, presenting the results in a way that can be easily applied to
a generic Z' model. As an illustrative example, we consider a simple model of a
Z' coupling to quarks and dark matter. We first study a benchmark case with
fixed couplings and then focus on the assumption that the Z' is responsible for
setting the dark matter relic abundance. Dijet constraints place significant
bounds on this scenario, allowing us to narrow down the allowed range of dark
matter masses for given Z' mass and width.Comment: 19 pages + appendices, 10 figures + 3 tables, ancillary file with
tabulated dijet constraints, v2: matches version published in JHE
|
Constraints on Z' models from LHC dijet searches and implications for
dark matter
|
constraints on z' models from lhc dijet searches and implications for dark matter
|
analyse atlas searches dijet resonances presenting generic model. illustrative quarks matter. benchmark couplings relic abundance. dijet bounds allowing narrow pages appendices tables ancillary file tabulated dijet matches
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non_dup
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[] |
42712906
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10.1007/JHEP09(2016)019
|
We introduce the conformal field theories that describe the shadows of the
lowest dimension composites made out of massless free scalars and fermions in
$d$ dimensions. We argue that these theories can be consistently defined as
free CFTs for even $d\geq 4$. We use OPE techniques to study their spectrum and
show that for $d\rightarrow\infty$ it matches that of free bosonic CFTs in
$d=6$ and $d=4$ dimensions. For these $\sigma$CFTs we calculate $c_T$ in
$d=6,8,10$ and $12$ dimensions using the OPE and also a direct construction of
their higher-derivative energy momentum tensors. Our results agree with the
general proposal of arXiv:1601.07198.Comment: 18+10 pages, no figure; v2: references updated, typos corrected,
matches JHEP versio
|
The free $\sigma$CFTs
|
the free $\sigma$cfts
|
conformal shadows composites massless scalars fermions dimensions. argue consistently cfts rightarrow infty matches bosonic cfts dimensions. sigma cfts tensors. agree proposal pages updated typos corrected matches jhep versio
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non_dup
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[] |
29509108
|
10.1007/JHEP09(2016)020
|
We demonstrate that $\mathcal{N}=2$ supersymmetric non-Abelian gauge theories
have towers of BPS particles obeying a Regge relation, $J \sim m^{2},$ between
their angular momenta, $J,$ and their masses, $m$. For $SU(N)$ Yang-Mills
theories, we estimate the slope of these Regge trajectories using a
non-relativistic quiver quantum mechanics model. Along the way, we also prove
various structure theorems for the quiver moduli spaces that appear in the
calculation.Comment: 34 pages, 6 figures, + appendices. V2 references correcte
|
Regge Trajectories in $\mathcal{N}=2$ Supersymmetric Yang-Mills Theory
|
regge trajectories in $\mathcal{n}=2$ supersymmetric yang-mills theory
|
mathcal supersymmetric abelian towers obeying regge momenta mills regge trajectories relativistic quiver mechanics model. theorems quiver moduli pages appendices. correcte
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non_dup
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[] |
42742627
|
10.1007/JHEP09(2016)021
|
QCD topological susceptibility at high temperature, $\chi_t(T)$, provides an
important input for the estimate of the axion abundance in the present
Universe. While the model independent determination of $\chi_t(T)$ should be
possible from the first principles using lattice QCD, existing methods fail at
high temperature, since not only the probability that non-trivial topological
sectors appear in the configuration generation process but also the local
topological fluctuations get strongly suppressed. We propose a novel method to
calculate the temperature dependence of topological susceptibility at high
temperature. A feasibility test is performed on a small lattice in the quenched
approximation, and the results are compared with the prediction of the dilute
instanton gas approximation. It is found that the method works well especially
at very high temperature and the result is consistent with the instanton
calculus down to $T\sim 2\, T_c$ within the statistical uncertainty.Comment: 27 pages, 8 figures. Method clarified, matches published versio
|
Topological susceptibility at high temperature on the lattice
|
topological susceptibility at high temperature on the lattice
|
topological susceptibility axion abundance universe. principles fail trivial topological sectors topological suppressed. propose topological susceptibility temperature. feasibility quenched dilute instanton approximation. instanton calculus pages figures. clarified matches versio
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non_dup
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42746997
|
10.1007/JHEP09(2016)022
|
We describe a physics derivation of theorems due to Dai and Freed about the
Atiyah-Patodi-Singer eta-invariant which is important for anomalies and
topological phases of matter. This is done by studying a massive fermion. The
key role is played by the wave function of the ground state in the Hilbert
space of the fermion in the large mass limit. The ground state takes values in
the determinant line bundle and has nontrivial Berry phases which characterize
the low energy topological phases.Comment: 33 pages, 2 figure
|
Dai-Freed theorem and topological phases of matter
|
dai-freed theorem and topological phases of matter
|
derivation theorems freed atiyah patodi singer anomalies topological matter. studying massive fermion. played hilbert fermion limit. determinant bundle nontrivial berry characterize topological pages
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non_dup
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42750412
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10.1007/JHEP09(2016)023
|
We show how a minimal (littlest) seesaw model involving two right-handed
neutrinos and a very constrained Dirac mass matrix, with one texture zero and
two independent Dirac masses, may arise from $S_4\times U(1)$ symmetry in a
semi-direct supersymmetric model. The resulting CSD3 form of neutrino mass
matrix only depends on two real mass parameters plus one undetermined phase. We
show how the phase may be fixed to be one of the cube roots of unity by
extending the $S_4\times U(1)$ symmetry to include a product of $Z_3$ factors
together with a CP symmetry, which is spontaneously broken leaving a single
residual $Z_3$ in the charged lepton sector and a residual $Z_2$ in the
neutrino sector, with suppressed higher order corrections. With the phase
chosen from the cube roots of unity to be $-2\pi/3$, the model predicts a
normal neutrino mass hierarchy with $m_1=0$, reactor angle
$\theta_{13}=8.7^\circ$, solar angle $\theta_{12}=34^\circ$, atmospheric angle
$\theta_{23}=44^\circ$, and CP violating oscillation phase $\delta_{\rm
CP}=-93^\circ$, depending on the fit of the model to the neutrino masses.Comment: 23 pages, matches version published in JHE
|
Littlest Seesaw model from S4 x U(1)
|
littlest seesaw model from s4 x u(1)
|
littlest seesaw involving handed neutrinos constrained dirac texture dirac arise supersymmetric model. undetermined phase. cube roots unity extending spontaneously broken leaving residual lepton residual suppressed corrections. cube roots unity predicts hierarchy reactor theta circ theta circ theta circ violating oscillation delta circ pages matches
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non_dup
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[] |
42735487
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10.1007/JHEP09(2016)024
|
We study linear and nonlinear stability of asymptotically AdS$_4$ solutions
in Einstein-Maxwell-scalar theory. After summarizing the set of static
solutions we first examine thermodynamical stability in the grand canonical
ensemble and the phase transitions that occur among them. In the second part of
the paper we focus on nonlinear stability in the microcanonical ensemble by
evolving radial perturbations numerically. We find hints of an instability
corner for vanishingly small perturbations of the same kind as the ones present
in the uncharged case. Collapses are avoided, instead, if the charge and mass
of the perturbations come to close the line of solitons. Finally we examine the
soliton solutions. The linear spectrum of normal modes is not resonant and
instability turns on at extrema of the mass curve. Linear stability extends to
nonlinear stability up to some threshold for the amplitude of the perturbation.
Beyond that, the soliton is destroyed and collapses to a hairy black hole. The
relative width of this stability band scales down with the charge Q, and does
not survive the blow up limit to a planar geometry.Comment: 43 pg, 22 fig. Published version. Appendix adde
|
Stability of Charged Global AdS$_4$ Spacetimes
|
stability of charged global ads$_4$ spacetimes
|
asymptotically einstein maxwell theory. summarizing examine thermodynamical grand canonical ensemble them. microcanonical ensemble evolving perturbations numerically. hints instability corner vanishingly perturbations kind uncharged case. collapses avoided perturbations come solitons. examine soliton solutions. resonant instability turns extrema curve. extends perturbation. soliton destroyed collapses hairy hole. survive blow planar fig. version. adde
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non_dup
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[] |
42676418
|
10.1007/JHEP09(2016)025
|
Using the known resummation of virtual corrections together with knowledge of
the leading-log structure of real radiation in a parton shower, we derive
analytic expressions for the resummed real radiation after they have been
integrated over all of phase space. Performing a numerical analysis for both
the 13 TeV LHC and a 100 TeV $pp$ collider, we show that resummation of the
real corrections is at least as important as resummation of the virtual
corrections, and that this resummation has a sizable effect for partonic center
of mass energies exceeding $\sqrt{s} = {\cal O}$(few TeV). For partonic center
of mass energies $\sqrt{s} \gtrsim$ 10 TeV, which can be reached at a 100 TeV
collider, resummation becomes an O(1) effect and needs to be included even for
rough estimates of the cross-sections.Comment: 23 pages, 6 figures, Several changes to original version, in
particular a derivation of the exclusive real cross-section. Version
published in JHE
|
Resummation of electroweak Sudakov logarithms for real radiation
|
resummation of electroweak sudakov logarithms for real radiation
|
resummation virtual parton shower derive analytic expressions resummed space. performing collider resummation resummation virtual resummation sizable partonic exceeding sqrt partonic sqrt gtrsim reached collider resummation rough pages derivation exclusive section.
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non_dup
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[] |
42746519
|
10.1007/JHEP09(2016)026
|
The leading order dynamics of the type IIB Large Volume Scenario is
characterised by the interplay between $\alpha'$ and non-perturbative effects
which fix the overall volume and all local blow-up modes leaving (in general)
several flat directions. In this paper we show that, in an arbitrary Calabi-Yau
with at least one blow-up mode resolving a point-like singularity, any
remaining flat directions can be lifted at subleading order by the inclusions
of higher derivative $\alpha'$ corrections. We then focus on simple fibred
cases with one remaining flat direction which can behave as an inflaton if its
potential is generated by both higher derivative $\alpha'$ and winding loop
corrections. Natural values of the underlying parameters give a spectral index
in agreement with observational data and a tensor-to-scalar ratio of order
$r=0.01$ which could be observed by forthcoming CMB experiments. Dangerous
corrections from higher dimensional operators are suppressed due to the
presence of an approximate non-compact shift symmetry.Comment: 21 pages, 3 figure
|
$\alpha'$ Inflation: Moduli Stabilisation and Observable Tensors from
Higher Derivatives
|
$\alpha'$ inflation: moduli stabilisation and observable tensors from higher derivatives
|
characterised interplay alpha perturbative blow leaving directions. calabi blow resolving singularity directions lifted subleading inclusions alpha corrections. fibred behave inflaton alpha winding corrections. observational forthcoming experiments. dangerous suppressed approximate pages
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non_dup
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[] |
42745416
|
10.1007/JHEP09(2016)030
|
We study the physics reach of the long-baseline oscillation analysis of the
DUNE experiment when realistic simulations are used to estimate its neutrino
energy reconstruction capabilities. Our studies indicate that significant
improvements in energy resolution compared to what is customarily assumed are
plausible. This improved energy resolution can increase the sensitivity to
leptonic CP violation in two ways. On the one hand, the CP-violating term in
the oscillation probability has a characteristic energy dependence that can be
better reproduced. On the other hand, the second oscillation maximum,
especially sensitive to $\delta_{CP}$, is better reconstructed. These effects
lead to a significant improvement in the fraction of values of $\delta_{CP}$
for which a $5 \sigma$ discovery of leptonic CP-violation would be possible.
The precision of the $\delta_{CP}$ measurement could also be greatly enhanced,
with a reduction of the maximum uncertainties from $26^\circ$ to $18^\circ$ for
a 300~MW$\cdot$kt$\cdot$yr exposure. We therefore believe that this potential
gain in physics reach merits further investigations of the detector performance
achievable in DUNE.Comment: 24 pages, 10 figures, 2 table
|
Neutrino oscillations at DUNE with improved energy reconstruction
|
neutrino oscillations at dune with improved energy reconstruction
|
oscillation dune realistic reconstruction capabilities. improvements customarily plausible. leptonic violation ways. violating oscillation reproduced. oscillation delta reconstructed. delta sigma discovery leptonic violation possible. precision delta greatly circ circ cdot cdot exposure. believe merits investigations achievable pages
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non_dup
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42749044
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10.1007/JHEP09(2016)031
|
We apply the operator product expansion (OPE) technique to the decay and
annihilation of heavy particles in a thermal medium with temperature below the
heavy particle mass, m_chi. This allows us to explain two interesting
observations made before: a) that the leading thermal correction to the decay
width of a charged particle is the same multiplicative factor of the
zero-temperature width for a two-body decay and muon decay, and b) that the
leading thermal correction to fermionic dark matter annihilation arises only at
order T^4/m_chi^4. The OPE further considerably simplifies the computation and
factorizes it into model-independent matrix elements in the thermal background,
and short-distance coefficients to be computed in zero-temperature field
theory.Comment: 13 pages, 3 figure
|
Finite-temperature modification of heavy particle decay and dark matter
annihilation
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finite-temperature modification of heavy particle decay and dark matter annihilation
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annihilation chi. multiplicative muon fermionic annihilation arises considerably simplifies factorizes pages
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non_dup
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[] |
42745437
|
10.1007/JHEP09(2016)032
|
We consider D3 branes in presence of an S-fold plane. The latter is a non
perturbative object, arising from the combined projection of an S-duality twist
and a discrete orbifold of the R-symmetry group. This construction naively
gives rise to 4d $\mathcal{N}=3$ SCFTs. Nevertheless it has been observed that
in some cases supersymmetry is enhanced to $\mathcal{N}=4$. In this paper we
study the explicit counting of degrees of freedom arising from vector
multiplets associated to strings suspended between the D3 branes probing the
S-fold. We propose that, for trivial discrete torsion, there is no vector
multiplet associated to $(1,0)$ strings stretched between a brane and its
image. We then focus on the case of rank 2 $\mathcal{N}=3$ theory that enhances
to $SU(3)$ $\mathcal{N}=4$ SYM, explicitly spelling out the isomorphism between
the BPS-spectrum of the manifestly $\mathcal{N}=3$ theory and that of three D3
branes in flat spacetime. Subsequently, we consider 3-pronged strings in these
setups and show how wall-crossing in the S-fold background implies wall
crossing in the flat geometry. This can be considered a consistency check of
the \emph{conjectured} SUSY enhancement. We also find that the above
isomorphism implies that a $(1,0)$ string, suspended between a brane and its
image in the S-fold, corresponds to a 3-string junction in the flat geometry.
This is in agreement with our claim on the absence of a vector multiplet
associated to such $(1,0)$ strings. This is because the 3-string junction in
flat geometry gives rise to a $1/4$-th BPS multiplet of the $\mathcal{N}=4$
algebra. Such multiplets always include particles with spin $>1$ as opposed to
a vector multiplet which is restricted by the requirement that the spins must
be $\leq 1$.Comment: 19 pages, 7 figure
|
Notes on S-folds and $\mathcal{N}=3$ theories
|
notes on s-folds and $\mathcal{n}=3$ theories
|
branes plane. perturbative arising projection duality twist orbifold group. naively mathcal scfts. nevertheless supersymmetry mathcal counting freedom arising multiplets strings suspended branes probing fold. propose trivial torsion multiplet strings stretched brane image. mathcal enhances mathcal explicitly spelling isomorphism manifestly mathcal branes spacetime. subsequently pronged strings setups crossing crossing geometry. consistency check emph conjectured susy enhancement. isomorphism suspended brane junction geometry. claim multiplet strings. junction multiplet mathcal algebra. multiplets opposed multiplet restricted requirement spins .comment pages
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non_dup
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[] |
42730792
|
10.1007/JHEP09(2016)033
|
Simplified models of the dark matter (co)annihilation mechanism predict
striking new collider signatures untested by current searches. These models,
which were codified in the coannihilation codex, provide the basis for a dark
matter (DM) discovery program at the Large Hadron Collider (LHC) driven by the
measured DM relic density. In this work, we study an exemplary model featuring
$s$-channel DM coannihilation through a scalar diquark mediator as a
representative case study of scenarios with strongly interacting coannihilation
partners. We discuss the full phenomenology of the model, ranging from low
energy flavor constraints, vacuum stability requirements, and precision Higgs
effects to direct detection and indirect detection prospects. Moreover,
motivated by the relic density calculation, we find significant portions of
parameter space are compatible with current collider constraints and can be
probed by future searches, including a proposed analysis for the novel
signature of a dijet resonance accompanied by missing transverse energy (MET).
Our results show that the $13$ TeV LHC with $100~\mathrm{fb}^{-1}$ luminosity
should be sensitive to mediators as heavy as 1 TeV and dark matter in the
400--500 GeV range. The combination of searches for single and paired dijet
peaks, non-resonant jets + MET excesses, and our novel resonant dijet + MET
signature have strong coverage of the motivated relic density region,
reflecting the tight connections between particles determining the dark matter
abundance and their experimental signatures at the LHC.Comment: 35 pages, 9 figure
|
Hunting for Dark Matter Coannihilation by Mixing Dijet Resonances and
Missing Transverse Energy
|
hunting for dark matter coannihilation by mixing dijet resonances and missing transverse energy
|
simplified annihilation predict striking collider signatures untested searches. codified coannihilation codex discovery hadron collider relic density. exemplary featuring coannihilation diquark mediator scenarios interacting coannihilation partners. phenomenology ranging flavor precision indirect prospects. motivated relic portions compatible collider probed searches signature dijet accompanied missing mathrm luminosity mediators range. searches paired dijet resonant jets excesses resonant dijet signature coverage motivated relic reflecting tight connections determining abundance signatures pages
|
non_dup
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[] |
42751518
|
10.1007/JHEP09(2016)034
|
We consider the conformal higher spin (CHS) theory in d=4 that contains the
s=1 Maxwell vector, s=2 Weyl graviton and their higher spin s=3,4,...
counterparts with higher-derivative \box^s kinetic terms. The interacting
action for such theory can be found as the coefficient of the logarithmically
divergent part in the induced action for sources coupled to higher spin
currents in a free complex scalar field model. We explicitly determine some
cubic and quartic interaction vertices in the CHS action from scalar loop
integrals. We then compute the simplest tree-level 4-particle scattering
amplitudes 11 -> 11, 22 -> 22 and 11 -> 22 and find that after summing up all
the intermediate CHS exchanges they vanish. This generalises the vanishing of
the scattering amplitude for external conformal scalars interacting via the
exchange of all CHS fields found earlier in arXiv:1512.08896. This vanishing
should generalise to all scattering amplitudes in the CHS theory and as in the
conformal scalar scattering case should be a consequence of the underlying
infinite dimensional higher spin symmetry that extends the standard conformal
symmetry.Comment: 32 pages. v2, v3: minor corrections and references adde
|
On triviality of S-matrix in conformal higher spin theory
|
on triviality of s-matrix in conformal higher spin theory
|
conformal maxwell weyl graviton counterparts terms. interacting logarithmically divergent currents model. explicitly cubic quartic integrals. simplest amplitudes summing exchanges vanish. generalises vanishing conformal scalars interacting vanishing generalise amplitudes conformal infinite extends conformal pages. minor adde
|
non_dup
|
[] |
42700148
|
10.1007/JHEP09(2016)035
|
We study the evolution of the universal area law of entanglement entropy when
the Hamiltonian of the system undergoes a time dependent perturbation. In
particular, we derive a general formula for the time dependent first order
correction to the area law under the assumption that the field theory resides
in a vacuum state when a small time-dependent perturbation of a relevant
coupling constant is turned on. Using this formula, we carry out explicit
calculations in free field theories deformed by a time dependent mass, whereas
for a generic QFT we show that the time dependent first order correction is
governed by the spectral function defining the two-point correlation function
of the trace of the energy-momentum tensor. We also carry out holographic
calculations based on the HRT proposal and find qualitative and, in certain
cases, quantitative agreement with the field theory calculations.Comment: 26 pages, one figure. v2: published versio
|
Dynamics of the Area Law of Entanglement Entropy
|
dynamics of the area law of entanglement entropy
|
universal entanglement undergoes perturbation. derive resides perturbation turned carry deformed generic governed defining trace tensor. carry holographic proposal qualitative pages figure. versio
|
non_dup
|
[] |
42710666
|
10.1007/JHEP09(2016)036
|
We investigate the prospects for spin determination of a heavy diboson
resonance using angular observables. Focusing in particular on boosted fully
hadronic final states, we detail both the differences in signal efficiencies
and distortions of differential distributions resulting from various jet
substructure techniques. We treat the 2 TeV diboson excess as a case study, but
our results are generally applicable to any future discovery in the diboson
channel. Scrutinizing ATLAS and CMS analyses at 8 TeV and 13 TeV, we find that
the specific cuts employed in these analyses have a tremendous impact on the
discrimination power between different signal hypotheses. We discuss modified
cuts that can offer a significant boost to spin sensitivity in a post-discovery
era. Even without altered cuts, we show that CMS, and partly also ATLAS, will
be able to distinguish between spin 0, 1, or 2 new physics diboson resonances
at the $2\sigma$ level with 30 fb$^{-1}$ of 13 TeV data, for our 2 TeV case
study.Comment: 42 pages, 11 figures: v2 matches published versio
|
Angular observables for spin discrimination in boosted diboson final
states
|
angular observables for spin discrimination in boosted diboson final states
|
prospects diboson observables. focusing boosted hadronic efficiencies distortions substructure techniques. treat diboson excess applicable discovery diboson channel. scrutinizing atlas cuts tremendous discrimination hypotheses. cuts offer boost discovery era. altered cuts partly atlas distinguish diboson resonances sigma pages matches versio
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non_dup
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[] |
42730822
|
10.1007/JHEP09(2016)038
|
We study modular Hamiltonians corresponding to the vacuum state for deformed
half-spaces in relativistic quantum field theories on $\mathbb{R}^{1,d-1}$. We
show that in addition to the usual boost generator, there is a contribution to
the modular Hamiltonian at first order in the shape deformation, proportional
to the integral of the null components of the stress tensor along the Rindler
horizon. We use this fact along with monotonicity of relative entropy to prove
the averaged null energy condition in Minkowski space-time. This subsequently
gives a new proof of the Hofman-Maldacena bounds on the parameters appearing in
CFT three-point functions. Our main technical advance involves adapting newly
developed perturbative methods for calculating entanglement entropy to the
problem at hand. These methods were recently used to prove certain results on
the shape dependence of entanglement in CFTs and here we generalize these
results to excited states and real time dynamics. We also discuss the AdS/CFT
counterpart of this result, making connection with the recently proposed
gravitational dual for modular Hamiltonians in holographic theories.Comment: 40 pages, 5 figure
|
Modular Hamiltonians for Deformed Half-Spaces and the Averaged Null
Energy Condition
|
modular hamiltonians for deformed half-spaces and the averaged null energy condition
|
modular hamiltonians deformed relativistic mathbb usual boost generator modular deformation rindler horizon. monotonicity averaged minkowski time. subsequently hofman maldacena bounds appearing functions. advance involves adapting newly perturbative calculating entanglement hand. entanglement cfts generalize excited dynamics. counterpart connection gravitational modular hamiltonians holographic pages
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non_dup
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[] |
42735218
|
10.1007/JHEP09(2016)039
|
In this paper, we consider Einstein gravity coupled to a vector field, either
minimally or non-minimally, together with a vector potential of the type
$V=2\Lambda_0+\ft 12 m^2 A^2+\gamma_4 A^4$. For a simpler non-minimally coupled
theory with $\Lambda_0=m=\gamma_4=0$, we obtain both extremal and non-extremal
black hole solutions that are asymptotic to Minkowski space-times. We study the
global properties of the solutions and derive the first law of thermodynamics
using Wald formalism. We find that the thermodynamical first laws of the
extremal black holes are modified by a one form associated with the vector
field. In particular, due to the existence of the non-minimal coupling, the
vector forms thermodynamic conjugates with the graviton mode and partly
contributes to the one form modifying the first laws. For a minimally coupled
theory with $\Lambda_0\neq 0$, we also obtain one class of asymptotically flat
extremal black hole solutions in general dimensions. This is possible because
the parameters $(m^2,\gamma_4)$ take certain values such that $V=0$. In
particular, we find that the vector also forms thermodynamic conjugates with
the graviton mode and contributes to the corresponding first laws, although the
non-minimal coupling has been turned off. Thus all the extremal black hole
solutions that we obtain provide highly non-trivial examples how the first law
of thermodynamics can be modified by a either minimally or non-minimally
coupled vector field.
We also study Gauss-Bonnet gravity non-minimally coupled to a vector and
obtain asymptotically flat black holes and Lifshitz black holes.Comment: 30 pages, no figures; minor corrections, references added,published
versio
|
Black holes with vector hair
|
black holes with vector hair
|
einstein minimally minimally lambda gamma simpler minimally lambda gamma extremal extremal asymptotic minkowski times. derive thermodynamics wald formalism. thermodynamical laws extremal holes field. thermodynamic conjugates graviton partly contributes modifying laws. minimally lambda asymptotically extremal dimensions. gamma thermodynamic conjugates graviton contributes laws turned off. extremal trivial thermodynamics minimally minimally field. gauss bonnet minimally asymptotically holes lifshitz pages minor versio
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non_dup
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[] |
42739711
|
10.1007/JHEP09(2016)040
|
We consider a RG flow in a general su(2) coset model perturbed by the least
relevant field. The perturbing field as well as some particular fields of
dimension close to one are constructed recursively in terms of lower level
fields. Using this construction we obtain the structure constants and the
four-point correlation functions in the leading order. This allows us to
compute the mixing coefficients among the fields in the UV and the IR theory.
It turns out that they are in agreement with those found recently using the
domain wall construction up to this order.Comment: 29 pages, references added. arXiv admin note: text overlap with
arXiv:1404.762
|
Second Order RG Flow in General su(2) Coset Models
|
second order rg flow in general su(2) coset models
|
coset perturbed field. perturbing recursively fields. order. theory. turns pages added. admin overlap
|
non_dup
|
[] |
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