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73957899
|
10.1007/JHEP07(2017)053
|
We introduce a new duality for $\mathcal{N}=1$ supersymmetric gauged matrix
models. This $0d$ duality is an order 4 symmetry, namely an equivalence between
four different theories, hence we call it Quadrality. Our proposal is motivated
by mirror symmetry, but is not restricted to theories with a D-brane
realization and holds for general $\mathcal{N}=1$ matrix models. We present
various checks of the proposal, including the matching of: global symmetries,
anomalies, deformations and the chiral ring. We also consider quivers and the
corresponding quadrality networks. Finally, we initiate the study of matrix
models that arise on the worldvolume of D(-1)-branes probing toric Calabi-Yau
5-folds.Comment: 46 pages, 18 figure
|
Quadrality for Supersymmetric Matrix Models
|
quadrality for supersymmetric matrix models
|
duality mathcal supersymmetric gauged models. duality equivalence call quadrality. proposal motivated mirror restricted brane realization mathcal models. checks proposal matching symmetries anomalies deformations chiral ring. quivers quadrality networks. initiate arise worldvolume branes probing toric calabi pages
|
non_dup
|
[] |
83855764
|
10.1007/JHEP07(2017)055
|
We study the thermoelectric DC conductivities of Horndeski holographic models
with momentum dissipation. We compute the butterfly velocity $v_B$ and we
discuss the existence of universal bounds on charge and energy diffusivities in
the incoherent limit related to quantum chaos. We find that the Horndeski
coupling represents a subleading contribution to the thermoelectric
conductivities in the incoherent limit and therefore it does not affect any of
the proposed bounds.Comment: 16 pages + 3 appendices, 2 figures; v2: references added, typo
corrected ; v3: minor revisions, references added, version published in JHE
|
Diffusivities bounds and chaos in holographic Horndeski theories
|
diffusivities bounds and chaos in holographic horndeski theories
|
thermoelectric conductivities horndeski holographic dissipation. butterfly universal bounds diffusivities incoherent chaos. horndeski subleading thermoelectric conductivities incoherent pages appendices typo corrected minor revisions
|
non_dup
|
[] |
83840399
|
10.1007/JHEP07(2017)056
|
Based on the quantum renormalization group, we derive the bulk geometry that
emerges in the holographic dual of the fermionic U(N) vector model at a nonzero
charge density. The obstruction that prohibits the metallic state from being
smoothly deformable to the direct product state under the renormalization group
flow gives rise to a horizon at a finite radial coordinate in the bulk. The
region outside the horizon is described by the Lifshitz geometry with a
higher-spin hair determined by microscopic details of the boundary theory. On
the other hand, the interior of the horizon is not described by any Riemannian
manifold, as it exhibits an algebraic non-locality. The non-local structure
inside the horizon carries the information on the shape of the filled Fermi
sea.Comment: 20 page
|
Non-local Geometry inside Lifshitz Horizon
|
non-local geometry inside lifshitz horizon
|
renormalization derive emerges holographic fermionic nonzero density. obstruction prohibits metallic smoothly deformable renormalization horizon coordinate bulk. horizon lifshitz hair microscopic theory. interior horizon riemannian manifold exhibits algebraic locality. horizon carries filled fermi
|
non_dup
|
[] |
83863245
|
10.1007/JHEP07(2017)057
|
Effective supergravity inflationary models induced by anti-D3 brane
interaction with the moduli fields in the bulk geometry have a geometric
description. The K\"ahler function carries the complete geometric information
on the theory. The non-vanishing bisectional curvature plays an important role
in the construction. The new geometric formalism, with the nilpotent superfield
representing the anti-D3 brane, allows a powerful generalization of the
existing inflationary models based on supergravity. They can easily incorporate
arbitrary values of the Hubble parameter, cosmological constant and gravitino
mass. We illustrate it by providing generalized versions of polynomial chaotic
inflation, T- and E-models of $\alpha$-attractor type, disk merger. We also
describe a multi-stage cosmological attractor regime, which we call cascade
inflation.Comment: 22 pages, 7 figures, v2: typos corrected, v3: references adde
|
$\overline{D3}$ Induced Geometric Inflation
|
$\overline{d3}$ induced geometric inflation
|
supergravity inflationary brane moduli geometric description. ahler carries geometric theory. vanishing bisectional curvature plays construction. geometric formalism nilpotent superfield representing brane powerful generalization inflationary supergravity. incorporate hubble cosmological gravitino mass. illustrate versions chaotic inflation alpha attractor merger. cosmological attractor call cascade pages typos corrected adde
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non_dup
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[] |
83865984
|
10.1007/JHEP07(2017)058
|
We develop the formalism for computing gravitational corrections to vacuum
decay from de Sitter space as a sub-Planckian perturbative expansion.
Non-minimal coupling to gravity can be encoded in an effective potential. The
Coleman bounce continuously deforms into the Hawking-Moss bounce, until they
coincide for a critical value of the Hubble constant. As an application, we
reconsider the decay of the electroweak Higgs vacuum during inflation. Our
vacuum decay computation reproduces and improves bounds on the maximal
inflationary Hubble scale previously computed through statistical techniques.Comment: 23 pages, 5 figures; references added, matches version published in
JHE
|
(Higgs) vacuum decay during inflation
|
(higgs) vacuum decay during inflation
|
formalism gravitational sitter planckian perturbative expansion. encoded potential. coleman bounce continuously deforms hawking moss bounce coincide hubble constant. reconsider electroweak inflation. reproduces improves bounds maximal inflationary hubble pages matches
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non_dup
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[] |
83855901
|
10.1007/JHEP07(2017)059
|
We consider 5-dimensional gauged supergravity coupled to Abelian vector
multiplets, and we look for supersymmetric solutions for which the
4-dimensional K\"ahler base space admits a holomorphic isometry. Taking
advantage of this isometry, we are able to find several supersymmetric
solutions for the ST$[2,n_v+1]$ special geometric model with arbitrarily many
vector multiplets. Among these there are three families of solutions with
$n_v+2$ independent parameters, which for one of the families can be seen to
correspond to $n_v+1$ electric charges and one angular momentum. These
solutions generalize the ones recently found for minimal gauged supergravity in
JHEP 1704 (2017) 017 and include in particular the general supersymmetric
asymptotically-AdS$_5$ black holes of Gutowski and Reall, analogous black hole
solutions with non-compact horizon, the three near horizon geometries
themselves, and the singular static solutions of Behrndt, Chamseddine and
Sabra.Comment: 29 page
|
On timelike supersymmetric solutions of Abelian gauged 5-dimensional
supergravity
|
on timelike supersymmetric solutions of abelian gauged 5-dimensional supergravity
|
gauged supergravity abelian multiplets look supersymmetric ahler admits holomorphic isometry. advantage isometry supersymmetric geometric arbitrarily multiplets. families families charges momentum. generalize gauged supergravity jhep supersymmetric asymptotically holes gutowski reall analogous horizon horizon geometries singular behrndt chamseddine
|
non_dup
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[] |
83854734
|
10.1007/JHEP07(2017)060
|
It is shown that the closure of the infinitesimal symmetry transformations
underlying classical ${\cal W}$ algebras give rise to L$_\infty$ algebras with
in general field dependent gauge parameters. Therefore, the class of well
understood ${\cal W}$ algebras provides highly non-trivial examples of such
strong homotopy Lie-algebras. We develop the general formalism for this
correspondence and apply it explicitly to the classical ${\cal W}_3$ algebra.Comment: 15 pages; v2: typos corrected, minor change
|
${\cal W}$ algebras are L$_\infty$ algebras
|
${\cal w}$ algebras are l$_\infty$ algebras
|
closure infinitesimal transformations algebras infty algebras parameters. understood algebras trivial homotopy algebras. formalism correspondence explicitly pages typos corrected minor
|
non_dup
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[] |
83862592
|
10.1007/JHEP07(2017)061
|
We show how to treat the superconformal algebras with eight Poincar\'e
supercharges in a unified manner for spacetime dimension $2 < d\leq 6$. This
formalism is ideally suited for analyzing the quadratic Casimir operator of the
superconformal algebra and its use in deriving superconformal blocks. We
illustrate this by an explicit construction of the superconformal blocks, for
any value of the spacetime dimension, for external protected scalar operators
which are the lowest component of flavor current multiplets.Comment: 20+9 pages, v2: references added, v3: added closed formulas for the
hypermultiplet decompositio
|
Superconformal Blocks for SCFTs with Eight Supercharges
|
superconformal blocks for scfts with eight supercharges
|
treat superconformal algebras eight poincar supercharges unified manner spacetime formalism ideally suited analyzing quadratic casimir superconformal deriving superconformal blocks. illustrate superconformal blocks spacetime protected flavor pages formulas hypermultiplet decompositio
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non_dup
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[] |
83848235
|
10.1007/JHEP07(2017)062
|
We study ${\cal N}=2$ Chern-Simons-matter theories with gauge group
$U_{k_1}(1)\times U_{k_2}(1)$. We find that, when $k_1+k_2=0$, the partition
function computed by localization dramatically simplifies and collapses to a
single term. We show that the same condition prevents the theory from having
supersymmetric vortex configurations. The theories include mass-deformed ABJM
theory with $U(1)_{k}\times U_{-k}(1)$ gauge group as a particular case.
Similar features are shared by a class of CS-matter theories with gauge group
$U_{k_1}(1)\times \cdots \times U_{k_N}(1)$.Comment: 17 page
|
N=2 Chern-Simons-Matter Theories Without Vortices
|
n=2 chern-simons-matter theories without vortices
|
chern simons partition localization dramatically simplifies collapses term. prevents supersymmetric vortex configurations. deformed abjm case. shared cdots .comment
|
non_dup
|
[] |
73390881
|
10.1007/JHEP07(2017)063
|
In BV formalism we can consider a Lagrangian submanifold as a gauge
condition. Starting with the BV action functional we construct a closed form on
the space of Lagrangian submanifolds. If the action functional is invariant
with respect to some group $H$ and $\Lambda$ is an $H$-invariant family of
Lagrangian submanifold then under certain conditions we construct a form on
$\Lambda$ that descends to a closed form on $\Lambda/H.$ Integrating the latter
form over a cycle in $\Lambda/H$ we obtain numbers that can have interesting
physical meaning. We show that one can get string amplitudes this way. Applying
this construction to topological quantum field theories one obtains topological
invariants.Comment: 25 pages, typos corrected, explanations adde
|
Families of gauge conditions in BV formalism
|
families of gauge conditions in bv formalism
|
formalism lagrangian submanifold condition. lagrangian submanifolds. lambda lagrangian submanifold lambda descends lambda integrating lambda meaning. amplitudes way. topological obtains topological pages typos corrected explanations adde
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non_dup
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[] |
83859373
|
10.1007/JHEP07(2017)064
|
We present a framework that describes the energy distribution of subjets of
radius $r$ within a jet of radius $R$. We consider both an inclusive sample of
subjets as well as subjets centered around a predetermined axis, from which the
jet shape can be obtained. For $r \ll R$ we factorize the physics at angular
scales $r$ and $R$ to resum the logarithms of $r/R$. For central subjets, we
consider both the standard jet axis and the winner-take-all axis, which involve
double and single logarithms of $r/R$, respectively. All relevant one-loop
matching coefficients are given, and an inconsistency in some previous results
for cone jets is resolved. Our results for the standard jet shape differ from
previous calculations at next-to-leading logarithmic order, because we account
for the recoil of the standard jet axis due to soft radiation. Numerical
results are presented for an inclusive subjet sample for $pp \to {\rm jet}+X$
at next-to-leading order plus leading logarithmic order.Comment: 39 pages, 7 figures, v2: journal versio
|
The Energy Distribution of Subjets and the Jet Shape
|
the energy distribution of subjets and the jet shape
|
describes subjets inclusive subjets subjets centered predetermined obtained. factorize resum logarithms subjets winner involve logarithms respectively. matching inconsistency cone jets resolved. logarithmic recoil radiation. inclusive subjet logarithmic pages versio
|
non_dup
|
[] |
83865617
|
10.1007/JHEP07(2017)065
|
We extend a well-known D-brane construction of the AdS/dCFT correspondence to
non-abelian defects. We focus on the bulk side of the correspondence and show
that there exists a regime of parameters in which the low-energy description
consists of two approximately decoupled sectors. The two sectors are gravity in
the ambient spacetime, and a six-dimensional supersymmetric Yang-Mills theory.
The Yang-Mills theory is defined on a rigid AdS_4 x S^2 background and admits
sixteen supersymmetries. We also consider a one-parameter deformation that
gives rise to a family of Yang-Mills theories on asymptotically AdS_4 x S^2
spacetimes, which are invariant under eight supersymmetries. With future
holographic applications in mind, we analyze the vacuum structure and
perturbative spectrum of the Yang-Mills theory on AdS_4 x S^2, as well as
systems of BPS equations for finite-energy solitons. Finally, we demonstrate
that the classical Yang-Mills theory has a consistent truncation on the
two-sphere, resulting in maximally supersymmetric Yang-Mills on AdS_4.Comment: 78 pages plus appendices, 4 figures; v2: references added; v3: typos
corrected, published versio
|
Holography for field theory solitons
|
holography for field theory solitons
|
extend brane dcft correspondence abelian defects. correspondence decoupled sectors. sectors ambient spacetime supersymmetric mills theory. mills rigid admits sixteen supersymmetries. deformation mills asymptotically spacetimes eight supersymmetries. holographic mind analyze perturbative mills solitons. mills truncation sphere maximally supersymmetric mills pages appendices typos corrected versio
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non_dup
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[] |
73395574
|
10.1007/JHEP07(2017)066
|
Unitary, Lorentz-invariant quantum field theories in flat spacetime obey
microcausality: commutators vanish at spacelike separation. For interacting
theories in more than two dimensions, we show that this implies that the
averaged null energy, $\int du T_{uu}$, must be positive. This non-local
operator appears in the operator product expansion of local operators in the
lightcone limit, and therefore contributes to $n$-point functions. We derive a
sum rule that isolates this contribution and is manifestly positive. The
argument also applies to certain higher spin operators other than the stress
tensor, generating an infinite family of new constraints of the form $\int du
X_{uuu\cdots u} \geq 0$. These lead to new inequalities for the coupling
constants of spinning operators in conformal field theory, which include as
special cases (but are generally stronger than) the existing constraints from
the lightcone bootstrap, deep inelastic scattering, conformal collider methods,
and relative entropy. We also comment on the relation to the recent derivation
of the averaged null energy condition from relative entropy, and suggest a more
general connection between causality and information-theoretic inequalities in
QFT.Comment: 31+8 page
|
Averaged Null Energy Condition from Causality
|
averaged null energy condition from causality
|
unitary lorentz spacetime obey microcausality commutators vanish spacelike separation. interacting averaged positive. lightcone contributes functions. derive isolates manifestly positive. argument applies generating infinite cdots inequalities spinning conformal stronger lightcone bootstrap inelastic conformal collider entropy. comment derivation averaged connection causality theoretic inequalities
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non_dup
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[] |
78508229
|
10.1007/JHEP07(2017)068
|
We calculate the instanton partition function of the four-dimensional N=2*
SU(N) gauge theory in the presence of a generic surface operator, using
equivariant localization. By analyzing the constraints that arise from
S-duality, we show that the effective twisted superpotential, which governs the
infrared dynamics of the two-dimensional theory on the surface operator,
satisfies a modular anomaly equation. Exploiting the localization results, we
solve this equation in terms of elliptic and quasi-modular forms which resum
all non-perturbative corrections. We also show that our results, derived for
monodromy defects in the four-dimensional theory, match the effective twisted
superpotential describing the infrared properties of certain two-dimensional
sigma models coupled either to pure N=2 or to N=2* gauge theories.Comment: 51 pages, v3: references added, typos fixed, footnote added, some
small changes in the text, appendix B streamlined. Matches the published
versio
|
Modular and duality properties of surface operators in N=2* gauge
theories
|
modular and duality properties of surface operators in n=2* gauge theories
|
instanton partition generic equivariant localization. analyzing arise duality twisted superpotential governs infrared satisfies modular anomaly equation. exploiting localization solve elliptic quasi modular resum perturbative corrections. monodromy defects match twisted superpotential describing infrared sigma pages typos footnote streamlined. matches versio
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non_dup
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[] |
83841046
|
10.1007/JHEP07(2017)070
|
We study the question of whether oscillations between non-relativistic
neutrinos or between relativistic and non-relativistic neutrinos are possible.
The issues of neutrino production and propagation coherence and their impact on
the above question are discussed in detail. It is demonstrated that no neutrino
oscillations can occur when neutrinos that are non-relativistic in the
laboratory frame are involved, except in a strongly mass-degenerate case. We
also discuss how this analysis depends on the choice of the Lorentz frame. Our
results are for the most part in agreement with Hinchliffe's rule.Comment: LaTeX, 22 pages. V2: typos corrected; minor textual changes. V3: sec.
3 rewritten; appendix on wave packet spreading added; small changes in sec.
2. Results and conclusions unchange
|
Do non-relativistic neutrinos oscillate?
|
do non-relativistic neutrinos oscillate?
|
oscillations relativistic neutrinos relativistic relativistic neutrinos possible. propagation coherence detail. oscillations neutrinos relativistic degenerate case. lorentz frame. hinchliffe latex pages. typos corrected minor textual changes. sec. rewritten packet spreading sec. unchange
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non_dup
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[] |
42682781
|
10.1007/JHEP07(2017)071
|
Motivated by physical constructions of homological knot invariants, we study
their analogs for closed 3-manifolds. We show that fivebrane compactifications
provide a universal description of various old and new homological invariants
of 3-manifolds. In terms of 3d/3d correspondence, such invariants are given by
the Q-cohomology of the Hilbert space of partially topologically twisted 3d N=2
theory T[M_3] on a Riemann surface with defects. We demonstrate this by
concrete and explicit calculations in the case of monopole/Heegaard Floer
homology and a 3-manifold analog of Khovanov-Rozansky link homology. The latter
gives a categorification of Chern-Simons partition function. Some of the new
key elements include the explicit form of the S-transform and a novel
connection between categorification and a previously mysterious role of Eichler
integrals in Chern-Simons theory.Comment: 85 pages, 14 figure
|
Fivebranes and 3-manifold homology
|
fivebranes and 3-manifold homology
|
motivated constructions homological knot invariants analogs manifolds. fivebrane compactifications universal homological invariants manifolds. correspondence invariants cohomology hilbert partially topologically twisted riemann defects. concrete monopole heegaard floer homology manifold analog khovanov rozansky homology. categorification chern simons partition function. transform connection categorification mysterious eichler integrals chern simons pages
|
non_dup
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[] |
73958374
|
10.1007/JHEP07(2017)072
|
We apply point-particle effective field theory (PPEFT) to compute the leading
shifts due to finite-size source effects in the Coulomb bound energy levels of
a relativistic spinless charged particle. This is the analogue for spinless
electrons of the contribution of the charge-radius of the source to these
levels, and we disagree with standard calculations in several ways. Most
notably we find there are two effective interactions with the same dimension
that contribute to leading order in the nuclear size. One is the standard
charge-radius contribution, while the other is a contact interaction whose
leading contribution to $\delta E$ arises linearly in the small length scale,
$\epsilon$, characterizing the finite-size effects, and is suppressed by
$(Z\alpha)^5$. We argue that standard calculations miss the contributions of
this second operator because they err in their choice of boundary conditions at
the source for the wave-function of the orbiting particle. PPEFT predicts how
this boundary condition depends on the source's charge radius, as well as on
the orbiting particle's mass. Its contribution turns out to be crucial if the
charge radius satisfies $\epsilon \lesssim (Z\alpha)^2 a_B$, with $a_B$ the
Bohr radius, since then relativistic effects become important. We show how the
problem is equivalent to solving the Schr\"odinger equation with competing
Coulomb, inverse-square and delta-function potentials, which we solve
explicitly. A similar enhancement is not predicted for the hyperfine structure,
due to its spin-dependence. We show how the charge-radius effectively runs due
to classical renormalization effects, and why the resulting RG flow is central
to predicting the size of the energy shifts. We discuss how this flow is
relevant to systems having much larger-than-geometric cross sections, and the
possible relevance to catalysis of reactions through scattering with monopoles.Comment: LaTeX, 22 pages plus appendices, v3: revised appendices, made more
precise and concise discussion about proton radius for mesonic system
|
Point-Particle Effective Field Theory II: Relativistic Effects and
Coulomb/Inverse-Square Competition
|
point-particle effective field theory ii: relativistic effects and coulomb/inverse-square competition
|
ppeft shifts coulomb relativistic spinless particle. analogue spinless disagree ways. notably size. delta arises linearly epsilon characterizing suppressed alpha argue miss orbiting particle. ppeft predicts orbiting mass. turns crucial satisfies epsilon lesssim alpha bohr relativistic important. solving schr odinger competing coulomb delta potentials solve explicitly. enhancement hyperfine dependence. effectively runs renormalization predicting shifts. geometric relevance catalysis latex pages appendices revised appendices precise concise proton mesonic
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non_dup
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[] |
73955879
|
10.1007/JHEP07(2017)073
|
We analyze intersecting surface defects inserted in interacting
four-dimensional N = 2 supersymmetric quantum field theories. We employ the
realization of a class of such systems as the infrared fixed points of
renormalization group flows from larger theories, triggered by perturbed
Seiberg-Witten monopole-like configurations, to compute their partition
functions. These results are cast into the form of a partition function of
4d/2d/0d coupled systems. Our computations provide concrete expressions for the
instanton partition function in the presence of intersecting defects and we
study the corresponding ADHM model.Comment: 66 pages; v2: minor typos correcte
|
Intersecting Surface Defects and Instanton Partition Functions
|
intersecting surface defects and instanton partition functions
|
analyze intersecting defects inserted interacting supersymmetric theories. employ realization infrared renormalization flows triggered perturbed seiberg witten monopole configurations partition functions. cast partition systems. computations concrete expressions instanton partition intersecting defects adhm pages minor typos correcte
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non_dup
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[] |
73959778
|
10.1007/JHEP07(2017)075
|
The (heterotic) double field theories and the exceptional field theories are
recently developed for manifestly duality covariant formulation of various
supergravity theories, describing low-energy limit of various (heterotic)
superstring and M-theory compactifications. These field theories are known to
be reduced to the standard descriptions by introducing appropriately
parameterized generalized metric and by applying suitably chosen section
conditions. We generalize this development to non-geometric backgrounds by
utilizing dual fields pertinent to non-geometric fluxes. We introduce different
parameterizations for the generalized metric, in terms of the conventional
supergravity fields or the dual fields. Under certain simplifying assumptions,
we construct new effective action for non-geometric backgrounds. We then obtain
the non-geometric backgrounds sourced by exotic branes. From them, we construct
their $U$-duality monodromy matrices. The charge of exotic branes obtained from
these monodromy matrices agrees perfectly with the charge obtained from the
non-geometric flux integral.Comment: cover + 101 pages; v2. published version in JHE
|
Effective Action for Non-Geometric Fluxes from Duality Covariant Actions
|
effective action for non-geometric fluxes from duality covariant actions
|
heterotic exceptional manifestly duality covariant formulation supergravity describing heterotic superstring compactifications. descriptions introducing appropriately parameterized suitably conditions. generalize geometric backgrounds utilizing pertinent geometric fluxes. parameterizations supergravity fields. simplifying assumptions geometric backgrounds. geometric backgrounds sourced exotic branes. duality monodromy matrices. exotic branes monodromy agrees perfectly geometric cover pages
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non_dup
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[] |
73413201
|
10.1007/JHEP07(2017)076
|
We show that the "geometric models of matter" approach proposed by the first
author can be used to construct models of anyon quasiparticles with fractional
quantum numbers, using 4-dimensional edge-cone orbifold geometries with
orbifold singularities along embedded 2-dimensional surfaces. The anyon states
arise through the braid representation of surface braids wrapped around the
orbifold singularities, coming from multisections of the orbifold normal bundle
of the embedded surface. We show that the resulting braid representations can
give rise to a universal quantum computer.Comment: 22 pages LaTe
|
Anyons in Geometric Models of Matter
|
anyons in geometric models of matter
|
geometric anyon quasiparticles fractional cone orbifold geometries orbifold singularities embedded surfaces. anyon arise braid braids wrapped orbifold singularities coming multisections orbifold bundle embedded surface. braid representations universal pages
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non_dup
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[] |
78507461
|
10.1007/JHEP07(2017)078
|
Results for the antinucleon-nucleon ($\bar NN$) interaction obtained at
next-to-next-to-next-to-leading order in chiral effective field theory (EFT)
are reported. A new local regularization scheme is used for the pion-exchange
contributions that has been recently suggested and applied in a pertinent study
of the $NN$ force within chiral EFT. Furthermore, an alternative strategy for
estimating the uncertainty is utilized that no longer depends on a variation of
the cutoffs. The low-energy constants associated with the arising contact terms
are fixed by a fit to the phase shifts and inelasticities provided by a
phase-shift analysis of $\bar pp$ scattering data. An excellent description of
the $\bar NN$ amplitudes is achieved at the highest order considered. Moreover,
because of the quantitative reproduction of partial waves up to $J=3$, there is
also a nice agreement on the level of $\bar pp$ observables. Specifically,
total and integrated elastic and charge-exchange cross sections agree well with
the results from the partial-wave analysis up to laboratory energies of $300$
MeV, while differential cross sections and analyzing powers are described
quantitatively up to $200$-$250$ MeV. The low-energy structure of the $\bar NN$
amplitudes is also considered and compared to data from antiprotonic hydrogen.Comment: 33 pages, 15 figure
|
Antinucleon-nucleon interaction at next-to-next-to-next-to-leading order
in chiral effective field theory
|
antinucleon-nucleon interaction at next-to-next-to-next-to-leading order in chiral effective field theory
|
antinucleon nucleon chiral reported. regularization pion pertinent chiral eft. estimating utilized cutoffs. arising shifts inelasticities data. excellent amplitudes considered. reproduction nice observables. elastic agree analyzing powers quantitatively mev. amplitudes antiprotonic pages
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non_dup
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[] |
83855487
|
10.1007/JHEP07(2017)079
|
We discuss the generation of small neutrino masses from d=7 1-loop diagrams.
We first systematically analyze all possible d=7 1-loop topologies. There is a
total of 48 topologies, but only 8 of these can lead to "genuine" d=7 neutrino
masses. Here, we define genuine models to be models in which neither d=5 nor
d=7 tree-level masses nor a d=5 1-loop mass appear, such that the d=7 1-loop is
the leading order contribution to the neutrino masses. All genuine models can
then be organized w.r.t. their particle content. We find there is only one
diagram with no representation larger than triplet, while there are 22 diagrams
with quadruplets. We briefly discuss three minimal example models of this kind
|
Loop neutrino masses from d=7 operator
|
loop neutrino masses from d=7 operator
|
diagrams. systematically analyze topologies. topologies genuine masses. genuine neither masses. genuine organized w.r.t. content. triplet diagrams quadruplets. briefly kind
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non_dup
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[] |
83856325
|
10.1007/JHEP07(2017)080
|
Models in which dark matter particles communicate with the visible sector
through a pseudoscalar mediator are well-motivated both from a theoretical and
from a phenomenological standpoint. With direct detection bounds being
typically subleading in such scenarios, the main constraints stem either from
collider searches for dark matter, or from indirect detection experiments.
However, LHC searches for the mediator particles themselves can not only
compete with -- or even supersede -- the reach of direct collider dark matter
probes, but they can also test scenarios in which traditional monojet searches
become irrelevant, especially when the mediator cannot decay on-shell into dark
matter particles or its decay is suppressed. In this work we perform a detailed
analysis of a pseudoscalar-mediated dark matter simplified model, taking into
account a large set of collider constraints and concentrating on the parameter
space regions favoured by cosmological and astrophysical data. We find that
mediator masses above 100-200~GeV are essentially excluded by LHC searches in
the case of large couplings to the top quark, while forthcoming collider and
astrophysical measurements will further constrain the available parameter
space.Comment: v2: 40 pages, 5 figures, 1 table; references added; some comments
added; conclusions unchanged; matches published versio
|
Cornering pseudoscalar-mediated dark matter with the LHC and cosmology
|
cornering pseudoscalar-mediated dark matter with the lhc and cosmology
|
communicate visible pseudoscalar mediator motivated phenomenological standpoint. bounds subleading scenarios collider searches indirect experiments. searches mediator compete supersede collider probes scenarios traditional monojet searches irrelevant mediator suppressed. pseudoscalar simplified collider concentrating favoured cosmological astrophysical data. mediator essentially excluded searches couplings forthcoming collider astrophysical constrain pages comments unchanged matches versio
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non_dup
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[] |
83847296
|
10.1007/JHEP07(2017)081
|
If no new physics signals are found, in the coming years, at the Large Hadron
Collider Run-2, an increase in precision of the Higgs couplings measurements
will shift the dicussion to the effects of higher order corrections. In Beyond
the Standard Model (BSM) theories this may become the only tool to probe new
physics. Extensions of the Standard Model (SM) with several scalar singlets may
address several of its problems, namely to explain dark matter, the
matter-antimatter asymmetry, or to improve the stability of the SM up to the
Planck scale. In this work we propose a general framework to calculate one
loop-corrections in BSM models with an arbitrary number of scalar singlets. We
then apply our method to a real and to a complex scalar singlet models. We
assess the importance of the one-loop radiative corrections first by computing
them for a tree level mixing sum constraint, and then for the main Higgs
production process $gg \to H$. We conclude that, for the currently allowed
parameter space of these models, the corrections can be at most a few percent.
Notably, a non-zero correction can survive when dark matter is present, in the
SM-like limit of the Higgs couplings to other SM particles.Comment: 35 pages, 3 figure
|
NLO electroweak corrections in general scalar singlet models
|
nlo electroweak corrections in general scalar singlet models
|
coming hadron collider precision couplings dicussion corrections. physics. extensions singlets antimatter asymmetry planck scale. propose singlets. singlet models. radiative percent. notably survive couplings pages
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non_dup
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[] |
83848958
|
10.1007/JHEP07(2017)082
|
We study the effect of inhomogeneity, which is induced by the graviton mass
in massive gravity, on the mutual information and the chaotic behavior of a
2+1-dimensional field theory from the gauge/gravity duality. When the system is
near-homogeneous, the mutual information increases as the graviton mass grows.
However, when the system is far from homogeneity, the mutual information
decreases as the graviton mass increases. By adding the perturbations of energy
into the system, we investigate the dynamical mutual information in the shock
wave geometry. We find that the greater perturbations disrupt the mutual
information more rapidly, which resembles the butterfly effect in chaos theory.
Besides, the greater inhomogeneity reduces the dynamical mutual information
more quickly just as in the static case.Comment: a footnote is added and some typos are revise
|
Influence of inhomogeneities on holographic mutual information and
butterfly effect
|
influence of inhomogeneities on holographic mutual information and butterfly effect
|
inhomogeneity graviton massive mutual chaotic duality. homogeneous mutual graviton grows. homogeneity mutual graviton increases. adding perturbations mutual shock geometry. perturbations disrupt mutual rapidly resembles butterfly chaos theory. besides inhomogeneity reduces mutual quickly footnote typos revise
|
non_dup
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[] |
73396528
|
10.1007/JHEP07(2017)083
|
We examine the constraints on the trilinear Higgs coupling $\lambda$ that
originate from associated ($Vh$) and vector boson fusion (VBF) Higgs production
in $pp$ collisions in the context of the Standard Model effective field theory.
The 1-loop contributions to $pp \to V h$ and $pp \to jj h$ that stem from
insertions of the dimension-6 operator $O_6 = - \lambda \left (H^\dagger H
\right )^3$ are calculated and combined with the ${\cal O} (\lambda)$
corrections to the partial decay widths of the Higgs boson. Employing
next-to-next-to-leading order QCD predictions, we analyse the sensitivity of
current and forthcoming measurements of the signal strengths in $Vh$ and VBF
Higgs production to changes in $\lambda$. We show that future LHC runs may be
able to probe modifications of $\lambda$ with a sensitivity similar to the one
that is expected to arise from determinations of double-Higgs production. The
sensitivity of differential $Vh$ and VBF Higgs distributions to a modified
$h^3$ coupling is also studied.Comment: 23 pages, 7 figures; v2: matches published versio
|
Constraints on the trilinear Higgs coupling from vector boson fusion and
associated Higgs production at the LHC
|
constraints on the trilinear higgs coupling from vector boson fusion and associated higgs production at the lhc
|
examine trilinear lambda originate boson fusion collisions theory. insertions lambda dagger lambda widths boson. employing analyse forthcoming strengths lambda runs modifications lambda arise determinations production. pages matches versio
|
non_dup
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[] |
83833799
|
10.1007/JHEP07(2017)084
|
In this paper, we consider two four-dimensional Horndeski-type gravity
theories with scalar fields that give rise to solutions with momentum
dissipation in the dual boundary theories. Firstly, we study Einstein-Maxwell
theory with a Horndeski axion term and two additional free axions which are
responsible for momentum dissipation. We construct static electrically charged
AdS planar black hole solutions in this theory and calculate analytically the
holographic DC conductivity of the dual field theory. We then generalize the
results to include magnetic charge in the black hole solution. Secondly, we
analyze Einstein-Maxwell theory with two Horndeski axions which are used for
momentum dissipation. We obtain AdS planar black hole solutions in the theory
and we calculate the holographic DC conductivity of the dual field theory. The
theory has a critical point $\alpha + \gamma \Lambda = 0$, beyond which the
kinetic terms of the Horndeski axions become ghost-like. The conductivity as a
function of temperature behaves qualitatively like that of a conductor below
the critical point, becoming semiconductor-like at the critical point. Beyond
the critical point, the ghost-like nature of the Horndeski fields is associated
with the onset of unphysical singular or negative conductivities. Some further
generalisations of the above theories are considered also.Comment: 23 pages, 1 figure. Typos corrected and reference adde
|
DC Conductivities with Momentum Dissipation in Horndeski Theories
|
dc conductivities with momentum dissipation in horndeski theories
|
horndeski dissipation theories. firstly einstein maxwell horndeski axion axions dissipation. electrically planar analytically holographic conductivity theory. generalize solution. secondly analyze einstein maxwell horndeski axions dissipation. planar holographic conductivity theory. alpha gamma lambda horndeski axions ghost like. conductivity behaves qualitatively conductor becoming semiconductor point. ghost horndeski onset unphysical singular conductivities. generalisations pages figure. typos corrected adde
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non_dup
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[] |
83859852
|
10.1007/JHEP07(2017)085
|
The Poincar\'e algebra can be extended (non-centrally) to the Maxwell algebra
and beyond. These extensions are relevant for describing particle dynamics in
electro-magnetic backgrounds and possibly including the backreaction due the
presence of multipoles. We point out a relation of this construction to free
Lie algebras that gives a unified description of all possible kinematic
extensions, leading to a symmetry algebra that we call Maxwell${}_\infty$. A
specific dynamical system with this infinite symmetry is constructed and
analysed.Comment: 1+27 pages. Mathematica notebook as ancillary fil
|
On free Lie algebras and particles in electro-magnetic fields
|
on free lie algebras and particles in electro-magnetic fields
|
poincar centrally maxwell beyond. extensions describing electro backgrounds possibly backreaction multipoles. algebras unified kinematic extensions call maxwell infty infinite pages. mathematica notebook ancillary
|
non_dup
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[] |
84092414
|
10.1007/JHEP07(2017)086
|
We point out that there is a simple variant of the SYK model, which we call
cSYK, that is $SL(2,R)$ invariant for all values of the coupling. The
modification consists of replacing the UV part of the SYK action with a
quadratic bilocal term. The corresponding bulk dual is a non-gravitational
theory in a rigid AdS$_2$ background. At weak coupling cSYK is a generalized
free field theory; at strong coupling, it approaches the infrared of SYK. The
existence of this line of fixed points explains the previously found connection
between the three-point function of bilinears in these two theories at large
$q$.Comment: 26 pages, v
|
A line of CFTs: from generalized free fields to SYK
|
a line of cfts: from generalized free fields to syk
|
variant call csyk coupling. modification replacing quadratic bilocal term. gravitational rigid background. csyk infrared syk. explains connection bilinears .comment pages
|
non_dup
|
[] |
83860051
|
10.1007/JHEP07(2017)087
|
We present the computer code RECOLA2 along with the first NLO electroweak
corrections to Higgs production in vector-boson fusion and updated results for
Higgs strahlung in the Two-Higgs-Doublet Model and Higgs-Singlet extension of
the Standard Model. A fully automated procedure for the generation of
tree-level and one-loop matrix elements in general models, including
renormalization, is presented. We discuss the application of the
Background-Field Method to the extended models. Numerical results for NLO
electroweak cross sections are presented for different renormalization schemes
in the Two-Higgs-Doublet Model and the Higgs-Singlet extension of the Standard
Model. Finally, we present distributions for the production of a heavy Higgs
boson.Comment: 47 pages, 29 figures, pdflatex, version to appear in JHE
|
NLO electroweak corrections in extended Higgs Sectors with RECOLA2
|
nlo electroweak corrections in extended higgs sectors with recola2
|
recola electroweak boson fusion updated strahlung doublet singlet model. automated renormalization presented. models. electroweak renormalization schemes doublet singlet model. pages pdflatex
|
non_dup
|
[] |
83850821
|
10.1007/JHEP07(2017)088
|
We study four-dimensional $\mathrm{SU}(N)$ Yang-Mills theory on $\mathbb{R}
\times \mathbb{T}^3=\mathbb{R} \times S^1_A \times S^1_B \times S^1_C$, with a
twisted boundary condition by a $\mathbb{Z}_N$ center symmetry imposed on
$S^1_B \times S^1_C$. This setup has no IR zero modes and hence is free from IR
divergences which could spoil trans-series expansion for physical observables.
Moreover, we show that the center symmetry is preserved at weak coupling
regime. This is shown by first reducing the theory on $\mathbb{T}^2=S_A \times
S_B$, to connect the model to the two-dimensional $\mathbb{CP}^{N-1}$-model.
Then, we prove that the twisted boundary condition by the center symmetry for
the Yang-Mills is reduced to the twisted boundary condition by the
$\mathbb{Z}_N$ global symmetry of $\mathbb{CP}^{N-1}$. There are $N$ classical
vacua, and fractional instantons connecting those $N$ vacua dynamically restore
the center symmetry. We also point out the presence of singularities on the
Borel plane which depend on the shape of the compactification manifold, and
comment on its implications.Comment: 37 pages, 5 figures; v2:references adde
|
From 4d Yang-Mills to 2d $\mathbb{CP}^{N-1}$ model: IR problem and
confinement at weak coupling
|
from 4d yang-mills to 2d $\mathbb{cp}^{n-1}$ model: ir problem and confinement at weak coupling
|
mathrm mills mathbb mathbb mathbb twisted mathbb imposed setup divergences spoil observables. preserved regime. reducing mathbb connect mathbb model. twisted mills twisted mathbb mathbb vacua fractional instantons connecting vacua dynamically restore symmetry. singularities borel compactification manifold comment pages adde
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non_dup
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[] |
83863282
|
10.1007/JHEP07(2017)089
|
The Minimal Lepton Flavour Violation (MLFV) framework is discussed after the
recent indication for CP violation in the leptonic sector. Among the three
distinct versions of MLFV, the one with degenerate right-handed neutrinos will
be disfavoured, if this indication is confirmed. The predictions for leptonic
radiative rare decays and muon conversion in nuclei are analysed, identifying
strategies to disentangle the different MLFV scenarios. The claim that the
present anomalies in the semi-leptonic $B$-meson decays can be explained within
the MLFV context is critically re-examined concluding that such an explanation
is not compatible with the present bounds from purely leptonic processes.Comment: 36 pages, 4 figures. V2: References added; version accepted for
publication on JHE
|
Revisiting Minimal Lepton Flavour Violation in the Light of Leptonic CP
Violation
|
revisiting minimal lepton flavour violation in the light of leptonic cp violation
|
lepton flavour violation mlfv indication violation leptonic sector. versions mlfv degenerate handed neutrinos disfavoured indication confirmed. leptonic radiative rare decays muon conversion nuclei analysed identifying disentangle mlfv scenarios. claim anomalies leptonic meson decays mlfv critically concluding explanation compatible bounds purely leptonic pages figures. publication
|
non_dup
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[] |
83853634
|
10.1007/JHEP07(2017)090
|
We investigate the behaviour of the bosonic string on AdS3 with H-flux at
stringy scales, looking in particular for a `tensionless' limit in which there
are massless higher spin gauge fields. We do this by revisiting the physical
spectrum of the sl(2,R)$_k$ WZW model and considering the limit in which k
becomes small. At k=3 we find that there is an infinite stringy tower of
massless higher spin fields which are part of a continuum of light states. This
can be viewed as a novel tensionless limit, which appears to be distinct from
that inferred from the symmetric orbifold description of superstring AdS3
vacua.Comment: 13 page
|
Stringy AdS3 from the Worldsheet
|
stringy ads3 from the worldsheet
|
bosonic stringy looking tensionless massless fields. revisiting small. infinite stringy tower massless continuum states. viewed tensionless inferred orbifold superstring
|
non_dup
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[] |
73957425
|
10.1007/JHEP07(2017)092
|
Aspects of black hole thermodynamics and information loss can be derived as a
consequence of Virasoro symmetry. To bolster the connection between Virasoro
conformal blocks and AdS$_3$ quantum gravity, we study sl$(2)$ Chern-Simons
Wilson line networks and revisit the idea that they compute a variety of
CFT$_2$ observables, including Virasoro OPE blocks, exactly. We verify this in
the semiclassical large central charge limit and to low orders in a
perturbative $1/c$ expansion.
Wilson lines connecting the boundary to points in the bulk play a natural
role in bulk reconstruction. Because quantum gravity in AdS$_3$ is rigidly
fixed by Virasoro symmetry, we argue that sl$(2)$ Wilson lines provide building
blocks for background independent bulk reconstruction. In particular, we show
explicitly that they automatically compute the uniformizing coordinates
appropriate to any background state.Comment: V3- Added some references V2- Significantly Expanded Appendix on
Regulation; 32+21 page
|
Exact Virasoro Blocks from Wilson Lines and Background-Independent
Operators
|
exact virasoro blocks from wilson lines and background-independent operators
|
thermodynamics virasoro symmetry. bolster connection virasoro conformal blocks chern simons wilson revisit observables virasoro blocks exactly. verify semiclassical orders perturbative expansion. wilson connecting reconstruction. rigidly virasoro argue wilson blocks reconstruction. explicitly automatically uniformizing expanded
|
non_dup
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[] |
83854290
|
10.1007/JHEP07(2017)093
|
We study the partition function of odd-dimensional conformal field theories
placed on spheres with a squashed metric. We establish that the round sphere
provides a local extremum for the free energy which, in general, is not a
global extremum. In addition, we show that the leading quadratic correction to
the free energy around this extremum is proportional to the coefficient, $C_T$,
determining the two-point function of the energy-momentum tensor in the CFT.
For three-dimensional CFTs, we compute explicitly this proportionality constant
for a class of squashing deformations which preserve an $SU(2)\times U(1)$
isometry group on the sphere. In addition, we evaluate the free energy as a
function of the squashing parameter for theories of free bosons, free fermions,
as well as CFTs holographically dual to Einstein gravity with a negative
cosmological constant. We observe that, after suitable normalization, the
dependence of the free energy on the squashing parameter for all these theories
is nearly universal for a large region of parameter space and is well
approximated by a simple quadratic function arising from holography. We
generalize our results to five-dimensional CFTs and, in this context, we also
study theories holographically dual to six-dimensional Gauss-Bonnet gravity.Comment: 40 pages, 7 figures, 1 table; v2: additional comments and
clarifications added, updated bibliograph
|
Comments on Squashed-sphere Partition Functions
|
comments on squashed-sphere partition functions
|
partition conformal placed spheres squashed metric. establish round sphere extremum extremum. quadratic extremum determining cft. cfts explicitly proportionality squashing deformations preserve isometry sphere. squashing bosons fermions cfts holographically einstein cosmological constant. normalization squashing nearly universal approximated quadratic arising holography. generalize cfts holographically gauss bonnet pages comments clarifications updated bibliograph
|
non_dup
|
[] |
78508151
|
10.1007/JHEP07(2017)094
|
Dyonic 1/4-BPS states in Type IIB string theory compactified on $\mathrm{K}3
\times T^2$ are counted by meromorphic Jacobi forms. The finite parts of these
functions, which are mixed mock Jacobi forms, account for the degeneracy of
states stable throughout the moduli space of the compactification. In this
paper, we obtain an exact asymptotic expansion for their Fourier coefficients,
refining the Hardy-Ramanujan-Littlewood circle method to deal with their
mixed-mock character. The result is compared to a low-energy supergravity
computation of the exact entropy of extremal dyonic 1/4-BPS single-centered
black holes, obtained by applying supersymmetric localization techniques to the
quantum entropy function.Comment: 42 page
|
Mixed Rademacher and BPS Black Holes
|
mixed rademacher and bps black holes
|
dyonic compactified mathrm counted meromorphic jacobi forms. mock jacobi degeneracy moduli compactification. asymptotic fourier refining hardy ramanujan littlewood circle deal mock character. supergravity extremal dyonic centered holes supersymmetric localization
|
non_dup
|
[] |
83855894
|
10.1007/JHEP07(2017)096
|
In this paper we discuss the supersymmetric localization of the 4D
$\mathcal{N}=2$ off-shell gauged supergravity in the background of the
$\textrm{AdS}_4$ neutral topological black hole, which is the gravity dual of
the ABJM theory defined on the boundary $\textrm{S}^1 \times \mathbb{H}^2$. We
compute the large-$N$ expansion of the supergravity partition function. The
result gives the black hole entropy with the logarithmic correction, which
matches the previous result of the entanglement entropy of the ABJM theory up
to some stringy effects. Our result is consistent with the previous on-shell
one-loop computation of the logarithmic correction to black hole entropy. It
provides an explicit example of the identification of the entanglement entropy
of the boundary conformal field theory with the bulk black hole entropy beyond
the leading order given by the classical Bekenstein-Hawking formula, which
consequently tests the AdS/CFT correspondence at the subleading order.Comment: 34 pages, 1 figure; minor changes in v2; references added in v3,
published version in JHE
|
Entanglement Entropy of ABJM Theory and Entropy of Topological Black
Hole
|
entanglement entropy of abjm theory and entropy of topological black hole
|
supersymmetric localization mathcal gauged supergravity textrm neutral topological abjm textrm mathbb supergravity partition function. logarithmic matches entanglement abjm stringy effects. logarithmic entropy. entanglement conformal bekenstein hawking correspondence subleading pages minor
|
non_dup
|
[] |
83868260
|
10.1007/JHEP07(2017)097
|
New physics, that is too heavy to be produced directly, can leave measurable
imprints on the tails of kinematic distributions at the LHC. We use energetic
QCD processes to perform novel measurements of the Standard Model (SM)
Effective Field Theory. We show that the dijet invariant mass spectrum, and the
inclusive jet transverse momentum spectrum, are sensitive to a dimension 6
operator that modifies the gluon propagator at high energies. The dominant
effect is constructive or destructive interference with SM jet production. We
compare differential next-to-leading order predictions from POWHEG to public 7
TeV jet data, including scale, PDF, and experimental uncertainties and their
respective correlations. We constrain a New Physics (NP) scale of 3.5 TeV with
current data. We project the reach of future 13 and 100 TeV measurements, which
we estimate to be sensitive to NP scales of 8 and 60 TeV, respectively. As an
application, we apply our bounds to constrain heavy vector octet colorons that
couple to the QCD current. We project that effective operators will surpass
bump hunts, in terms of coloron mass reach, even for sequential couplings.Comment: 40 pages, 13 figures, 8 tables. Minor changes. Accepted on JHE
|
Precision Probes of QCD at High Energies
|
precision probes of qcd at high energies
|
leave measurable imprints tails kinematic lhc. energetic theory. dijet inclusive modifies gluon propagator energies. constructive destructive interference production. powheg respective correlations. constrain data. respectively. bounds constrain octet colorons couple current. surpass bump hunts coloron sequential pages tables. minor changes.
|
non_dup
|
[] |
83850406
|
10.1007/JHEP07(2017)098
|
The analogues of giant magnon configurations are studied on the string world
sheet in the lambda background. This is a discrete deformation of the
AdS(5)xS(5) background that preserves the integrability of the world sheet
theory. Giant magnon solutions are generated using the dressing method and
their dispersion relation is found. This reduces to the usual dyonic giant
magnon dispersion relation in the appropriate limit and becomes relativistic in
another limit where the lambda model becomes the generalized sine-Gordon theory
of the Pohlmeyer reduction. The scattering of giant magnons is then shown in
the semi-classical limit to be described by the quantum S-matrix that is a
quantum group deformation of the conventional giant magnon S-matrix. It is
further shown that in the small g limit, a sector of the S-matrix is related to
the XXZ spin chain whose spectrum matches the spectrum of magnon bound states.Comment: 53 pages, 6 figures, final version to appear in JHE
|
Giant Magnons of String Theory in the Lambda Background
|
giant magnons of string theory in the lambda background
|
analogues giant magnon configurations sheet lambda background. deformation preserves integrability sheet theory. giant magnon dressing found. reduces usual dyonic giant magnon relativistic lambda sine gordon pohlmeyer reduction. giant magnons deformation giant magnon matrix. matches magnon pages
|
non_dup
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[] |
83854590
|
10.1007/JHEP07(2017)101
|
We propose the first viable radiative seesaw model, in which the neutrino
masses are induced radiatively via the two-loop Feynman diagram involving
Strongly Interacting Massive Particles (SIMP). The stability of SIMP dark
matter (DM) is ensured by a $\mathbb{Z}_5$ discrete symmetry, through which the
DM annihilation rate is dominated by the $3 \to 2$ self-annihilating processes.
The right amount of thermal relic abundance can be obtained with perturbative
couplings in the resonant SIMP scenario, while the astrophysical bounds
inferred from the Bullet cluster and spherical halo shapes can be satisfied. We
show that SIMP DM is able to maintain kinetic equilibrium with thermal plasma
until the freeze-out temperature via the Yukawa interactions associated with
neutrino mass generation.Comment: 19 pages, 8 figures, 2 tables, expanded, new appendix added, new
references added, updated plots, fixed minor typos, matches journal versio
|
A Radiative Neutrino Mass Model with SIMP Dark Matter
|
a radiative neutrino mass model with simp dark matter
|
propose viable radiative seesaw radiatively feynman involving interacting massive simp simp ensured mathbb annihilation dominated annihilating processes. relic abundance perturbative couplings resonant simp astrophysical bounds inferred bullet spherical halo shapes satisfied. simp maintain freeze yukawa pages tables expanded updated plots minor typos matches versio
|
non_dup
|
[] |
83838896
|
10.1007/JHEP07(2017)102
|
Some anomalies in the processes $b\to s\ell\ell$ ($\ell=\mu,e$) and $b\to c
\ell\bar\nu_\ell$ ($\ell=\tau,\mu,e$), in particular in the observables $R_K$
and $R_{D^{(\ast)}}$, have been found by the BaBar, LHCb and Belle
Collaborations, leading to a possible lepton flavor universality violation. If
these anomalies were confirmed they would inevitably lead to physics beyond the
Standard Model. In this paper we try to accommodate the present anomalies in an
extra dimensional theory, solving the naturalness problem of the Standard Model
by means of a warped metric with a strong conformality violation near the
infra-red brane. The $R_K$ anomaly can be accommodated provided that the
left-handed bottom quark and muon lepton have some degree of compositeness in
the dual theory. The theory is consistent with all electroweak and flavor
observables, and with all direct searches of Kaluza-Klein electroweak gauge
bosons and gluons. The fermion spectrum, and fermion mixing angles, can be
reproduced by mostly elementary right-handed bottom quarks, and tau and muon
leptons. Moreover the $R_{D^{(\ast)}}$ anomaly requires a strong degree of
compositeness for the left-handed tau leptons, which turns out to be in tension
with experimental data on the $g_{\tau_L}^Z$ coupling, possibly unless some
degree of fine-tuning is introduced in the fixing of the CKM matrix.Comment: 40 pages, 20 figures; v2: Extended version with analyses of
non-observation of FUV in the mu/e sector, LFU tests in tau decays, B->K nu
nu and B->K tau tau; v3: Revised version where radiative corrections to
observables $\tau\to\ell \nu\nu$ and the $Z\bar\ell\ell$ couplings
($\ell=\tau,\mu$), as well as the LHC dilepton resonance from bottom-bottom
fusion, are considered. Some conclusions change
|
Lepton-flavor universality violation in $R_K$ and $R_{D^{(*)}}$ from
warped space
|
lepton-flavor universality violation in $r_k$ and $r_{d^{(*)}}$ from warped space
|
anomalies observables babar lhcb belle collaborations lepton flavor universality violation. anomalies confirmed inevitably model. accommodate anomalies extra solving naturalness warped conformality violation infra brane. anomaly accommodated handed muon lepton compositeness theory. electroweak flavor observables searches kaluza klein electroweak bosons gluons. fermion fermion angles reproduced mostly elementary handed quarks muon leptons. anomaly compositeness handed leptons turns tension possibly unless fine tuning fixing pages decays revised radiative observables couplings dilepton fusion considered.
|
non_dup
|
[] |
83834468
|
10.1007/JHEP07(2017)103
|
The exact renormalization group is used to study the RG flow of quantities in
field theories. The basic idea is to write an evolution operator for the flow
and evaluate it in perturbation theory. This is easier than directly solving
the differential equation. This is illustrated by reproducing known results in
four dimensional $\phi^4$ field theory and the two dimensional Sine-Gordon
theory. It is shown that the calculation of beta function is somewhat
simplified. The technique is also used to calculate the c-function in two
dimensional Sine-Gordon theory. This agrees with other prescriptions for
calculating c-functions in the literature. If one extrapolates the connection
between central charge of a CFT and entanglement entropy in two dimensions, to
the c-function of the perturbed CFT, then one gets a value for the entanglement
entropy in Sine-Gordon theory that is in exact agreement with earlier
calculations (including one using holography) in arXiv:1610.04233
|
Exact Renormalization Group and Sine Gordon Theory
|
exact renormalization group and sine gordon theory
|
renormalization quantities theories. perturbation theory. easier solving equation. illustrated reproducing sine gordon theory. beta somewhat simplified. sine gordon theory. agrees prescriptions calculating literature. extrapolates connection entanglement perturbed gets entanglement sine gordon holography
|
non_dup
|
[] |
83852017
|
10.1007/JHEP07(2017)105
|
A compressed spectrum is an anticipated hideout for many beyond standard
model scenarios. Such a spectrum naturally arises in the minimal universal
extra dimension framework and also in supersymmetric scenarios. Low $p_T$
leptons and jets are characteristic features of such situations. Hence, a
monojet with $\not E_T$ has been the conventional signal at the Large Hadron
Collider (LHC). However, we stress that inclusion of $p_T$-binned track
observables from such soft objects provide very efficient discrimination of new
physics signals against various SM backgrounds. We consider two benchmark
points each for minimal universal extra dimension (MUED) and minimal
supersymmetric standard model (MSSM) scenarios. We perform a detailed cut-based
and multivariate analysis (MVA) to show that the new physics parameter space
can be probed in the ongoing run of LHC at 13 TeV center-of-mass energy with an
integrated luminosity $\sim$ 20-50 fb$^{-1}$. When studied in conjunction with
the dark matter relic density constraint assuming standard cosmology, we find
that compressed MUED (with $\Lambda R=2$) can be already excluded from the
existing data. Also, MVA turns out to be a better technique than regular
cut-based analysis since tracks provide uncorrelated observables which would
extract more information from an event.Comment: 26 pages, 7 figures. Minor modifications in the text, references
added, accepted for publication in JHE
|
Constraining compressed versions of MUED and MSSM using soft tracks at
the LHC
|
constraining compressed versions of mued and mssm using soft tracks at the lhc
|
compressed anticipated hideout scenarios. naturally arises universal extra supersymmetric scenarios. leptons jets situations. monojet hadron collider inclusion binned track observables discrimination backgrounds. benchmark universal extra mued supersymmetric mssm scenarios. multivariate probed ongoing luminosity conjunction relic cosmology compressed mued lambda excluded data. turns tracks uncorrelated observables extract pages figures. minor modifications publication
|
non_dup
|
[] |
83859381
|
10.1007/JHEP07(2017)106
|
We show that the Bekenstein-Hawking entropy of a class of BPS electrically
charged rotating black holes in AdS$_5\times S^5$ can be obtained by a simple
extremization principle. We expect that this extremization corresponds to the
attractor mechanism for BPS rotating black holes in five-dimensional gauged
supergravity, which is still unknown. The expression to be extremized has a
suggestive resemblance to anomaly polynomials and the supersymmetric Casimir
energy recently studied for $\mathcal{N}=4$ super Yang-Mills.Comment: 27 pages; v2: refs added; v3: ref adde
|
An extremization principle for the entropy of rotating BPS black holes
in AdS$_5$
|
an extremization principle for the entropy of rotating bps black holes in ads$_5$
|
bekenstein hawking electrically rotating holes extremization principle. extremization attractor rotating holes gauged supergravity unknown. extremized suggestive resemblance anomaly polynomials supersymmetric casimir mathcal super pages refs adde
|
non_dup
|
[] |
84093753
|
10.1007/JHEP07(2017)108
|
The observed burst duration and energies of the neutrinos from Supernova
1987A strongly limit the possibility of any weakly-interacting light particle
species being produced in the proto-neutron star (PNS) core and leading to
efficient energy loss. We reexamine this constraint on Weinberg's Higgs portal
model, in which the dark radiation particles (the Goldstone bosons) and the
dark matter candidate (a Majorana fermion) interact with Standard Model (SM)
fields solely through the mixing of the SM Higgs boson and a light Higgs boson.
In order for the Goldstone bosons to freely stream out of the PNS core region,
the Higgs portal coupling has to be about a factor of $4$--$9$ smaller than the
current collider bound inferred from the SM Higgs invisible decay width. We
find that in the energy loss rate calculations, results obtained by using the
one-pion exchange (OPE) approximation and the SP07 global fits for the
nucleon-nucleon total elastic cross section differ only by a factor $\lesssim
3$. The SN 1987A constraints surpass those set by laboratory experiments or by
the energy loss arguments in other astrophysical objects such as the gamma-ray
bursts, even with other nuclear uncertainties taken into account. Furthermore,
the SN 1987A constraints are comparable to bounds from the latest dark matter
direct search for low-mass WIMPs ($\lesssim 10~\Gev$.)Comment: 30 pages, 10 figure
|
Supernovae and Weinberg's Higgs Portal Dark Radiation and Dark Matter
|
supernovae and weinberg's higgs portal dark radiation and dark matter
|
burst neutrinos supernova weakly interacting proto neutron loss. reexamine weinberg portal goldstone bosons candidate majorana fermion interact solely boson boson. goldstone bosons freely stream portal collider inferred invisible width. pion fits nucleon nucleon elastic lesssim surpass arguments astrophysical gamma bursts account. comparable bounds latest wimps lesssim comment pages
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non_dup
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[] |
73959155
|
10.1007/JHEP07(2017)109
|
In this paper we consider $\phi^4$ theory in $4-\epsilon$ dimensions at the
Wilson-Fisher fixed point where the theory becomes conformal. We extend the
method in arXiv:1505.00963 for calculating the leading order term in the
anomalous dimensions of some operators with spin. This method involves mostly
symmetry arguments and reduces the process for calculating anomalous dimensions
to some Wick contractions in the corresponding free theory. We apply this
method in the case of operators with two and three fields whose twist is equal
to the number of fields they contain, and we rederive known results for their
anomalous dimensions. We also calculate the leading term in the anomalous
dimensions of operators with spin two and three. In addition, we find
expressions for the primary operators of the free theory, for arbitrary spin
and number of fields, whose twist remains equal to the number of fields.Comment: 34 page
|
Leading Order Anomalous Dimensions at the Wilson-Fisher Fixed Point from
CFT
|
leading order anomalous dimensions at the wilson-fisher fixed point from cft
|
epsilon wilson fisher conformal. extend calculating anomalous spin. involves mostly arguments reduces calculating anomalous wick contractions theory. twist rederive anomalous dimensions. anomalous three. expressions twist
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non_dup
|
[] |
83868710
|
10.1007/JHEP07(2017)110
|
The ADHM construction is a very strong scheme to construct the instantons in
four dimensions. We study an ADHM construction of instantons in $4n~(n\geq2)$
dimensions by generalizing this scheme. The higher-dimensional ADHM
construction generates the $4n$-dimensional (anti-)self-dual instantons which
satisfy the (anti-)self-dual equation in $4n$ dimensions:
$F(n)=\pm\ast_{4n}F(n)$. Here $F(n)$ is the $n$th wedge products of the gauge
field strength 2-form $F$. We also show that our scheme reproduces the known
$4n$-dimensional one-instantons and there are multi-instanton solutions of the
't Hooft type in the dilute instanton gas limit. Moreover we discuss a
Harrington-Shepard type caloron in $4n$ dimensions and this monopole limit.Comment: 23 pages, published versio
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ADHM Construction of (Anti-)Self-dual Instantons in $4n$ Dimensions
|
adhm construction of (anti-)self-dual instantons in $4n$ dimensions
|
adhm instantons dimensions. adhm instantons generalizing scheme. adhm generates instantons satisfy wedge reproduces instantons instanton hooft dilute instanton limit. harrington shepard caloron monopole pages versio
|
non_dup
|
[] |
78509556
|
10.1007/JHEP07(2017)111
|
We observe that the string field theory actions for the topological sigma
models describe higher or categorified Chern-Simons theories. These theories
yield dynamical equations for connective structures on higher principal
bundles. As a special case, we consider holomorphic higher Chern-Simons theory
on the ambitwistor space of four-dimensional space-time. In particular, we
propose a higher ambitwistor space action functional for maximally
supersymmetric Yang-Mills theory.Comment: v2: 25 pages, conventions improved, typos fixed, published versio
|
Supersymmetric Yang-Mills Theory as Higher Chern-Simons Theory
|
supersymmetric yang-mills theory as higher chern-simons theory
|
topological sigma categorified chern simons theories. connective principal bundles. holomorphic chern simons ambitwistor time. propose ambitwistor maximally supersymmetric mills pages conventions typos versio
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non_dup
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[] |
73400834
|
10.1007/JHEP07(2017)112
|
A particular two-parameter class of little string theories can be described
by $M$ parallel M5-branes probing a transverse affine $A_{N-1}$ singularity. We
previously discussed the duality between the theories labelled by $(N,M)$ and
$(M,N)$. In this work, we propose that these two are in fact only part of a
larger web of dual theories. We provide evidence that the theories labelled by
$(N,M)$ and $(\tfrac{NM}{k},k)$ are dual to each other, where
$k=\text{gcd}(N,M)$. To argue for this duality, we use a geometric realization
of these little string theories in terms of F-theory compactifications on
toric, non-compact Calabi-Yau threefolds $X_{N,M}$ which have a double elliptic
fibration structure. We show explicitly for a number of examples that
$X_{NM/k,k}$ is part of the extended moduli space of $X_{N,M}$, i.e. the two
are related through symmetry transformations and flop transitions. By working
out the full duality map, we provide a simple check at the level of the free
energy of the little string theories.Comment: 69 page
|
Dual Little Strings from F-Theory and Flop Transitions
|
dual little strings from f-theory and flop transitions
|
branes probing affine singularity. duality labelled propose theories. labelled tfrac argue duality geometric realization compactifications toric calabi threefolds elliptic fibration structure. explicitly moduli i.e. transformations flop transitions. duality check
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non_dup
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[] |
42690282
|
10.1007/JHEP07(2017)113
|
In this work we find the minimal extension of the Standard Model's Higgs
sector which can lead to a light Higgs boson via radiative symmetry breaking
and is consistent with the phenomenological requirements for a low-energy
realization of a conformal theory. The model which turns out to be stable under
renormalization group translations is an extension of the Standard Model by two
scalar fields, one of which acquires a finite vacuum expectation value and
therefore mixes into the physical Higgs. We find that the minimal model
predicts a sizable amount of mixing which makes it testable at a collider. In
addition to the physical Higgs, the theory's scalar spectrum contains one light
and one heavy boson. The heavy scalar's properties render it a potential dark
matter candidate.Comment: 18 pages, 9 figures. Added section on "Embedding into semiclassical
gravity", main results remain unchanged, version published in JHE
|
Minimal conformal extensions of the Higgs sector
|
minimal conformal extensions of the higgs sector
|
boson radiative breaking phenomenological realization conformal theory. turns renormalization translations acquires expectation mixes higgs. predicts sizable testable collider. boson. render pages figures. embedding semiclassical unchanged
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non_dup
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[] |
83861085
|
10.1007/JHEP07(2017)114
|
We investigate the relation between 4d ambitwistor string theory and on-shell
diagrams for planar N=4 super-Yang-Mills and N=8 supergravity, and deduce
several new results about their scattering amplitudes at tree-level and 1-loop.
In particular, we derive new Grassmannian integral formulae for tree-level
amplitudes and obtain new worldsheet formulae for 1-loop amplitudes which are
manifestly supersymmetric and supported on scattering equations refined by MHV
degree.Comment: v3. minor changes, published in JHE
|
From 4d Ambitwistor Strings to On Shell Diagrams and Back
|
from 4d ambitwistor strings to on shell diagrams and back
|
ambitwistor diagrams planar super mills supergravity deduce amplitudes loop. derive grassmannian formulae amplitudes worldsheet formulae amplitudes manifestly supersymmetric refined minor
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non_dup
|
[] |
83837993
|
10.1007/JHEP07(2017)115
|
A $b$-ghost was constructed for the $D=11$ non-minimal pure spinor
superparticle by requiring that $\{Q , b\} = T$ where $Q =
\Lambda^{\alpha}D_{\alpha} + R^{\alpha}\bar{W}_{\alpha}$ is the usual
non-minimal pure spinor BRST operator. As was done for the $D=10$ $b$-ghost, we
will show that the $D=11$ $b$-ghost can be simplified by introducing an
$SO(10,1)$ fermionic vector $\bar{\Sigma}^{i}$ constructed out of the fermionic
spinor $D_{\alpha}$ and pure spinor variables. This simplified version will be
shown to satisfy $\{Q, b\} = T$ and $\{b , b\} =$ BRST - trivial.Comment: 47 pages. Added reference
|
Simplified D=11 Pure Spinor b Ghost
|
simplified d=11 pure spinor b ghost
|
ghost spinor superparticle requiring lambda alpha alpha alpha alpha usual spinor brst operator. ghost ghost simplified introducing fermionic sigma fermionic spinor alpha spinor variables. simplified satisfy brst pages.
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non_dup
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[] |
78511744
|
10.1007/JHEP07(2017)116
|
We show that $\frak{su}(2)$ Lie algebras of coordinate operators related to
quantum spaces with $\frak{su}(2)$ noncommutativity can be conveniently
represented by $SO(3)$-covariant poly-differential involutive representations.
We show that the quantized plane waves obtained from the quantization map
action on the usual exponential functions are determined by polar decomposition
of operators combined with constraint stemming from the Wigner theorem for
$SU(2)$. Selecting a subfamily of $^*$-representations, we show that the
resulting star-product is equivalent to the Kontsevich product for the Poisson
manifold dual to the finite dimensional Lie algebra $\mathfrak{su}(2)$. We
discuss the results, indicating a way to extend the construction to any
semi-simple non simply connected Lie group and present noncommutative scalar
field theories which are free from perturbative UV/IR mixing.Comment: 29 pages, several paragraphs added, published in JHE
|
Involutive representations of coordinate algebras and quantum spaces
|
involutive representations of coordinate algebras and quantum spaces
|
frak algebras coordinate frak noncommutativity conveniently covariant poly involutive representations. quantized quantization usual exponential polar decomposition stemming wigner selecting subfamily representations kontsevich poisson manifold mathfrak extend noncommutative perturbative pages paragraphs
|
non_dup
|
[] |
83860318
|
10.1007/JHEP07(2017)118
|
We propose a Pati-Salam extension of the standard model incorporating a
flavor symmetry based on the $\Delta \left( 27\right)$ group. The theory
realizes a realistic Froggatt-Nielsen picture of quark mixing and a predictive
pattern of neutrino oscillations. We find that, for normal neutrino mass
ordering, the atmospheric angle must lie in the higher octant, CP must be
violated in oscillations, and there is a lower bound for the $0\nu\beta\beta$
decay rate. For the case of inverted mass ordering, we find that the lower
atmospheric octant is preferred, and that CP can be conserved in oscillations.
Neutrino masses arise from a low-scale seesaw mechanism, whose messengers can
be produced by a $Z^{\prime }$ portal at the LHC.Comment: 28 pages, 3 figures, published versio
|
Predictive Pati-Salam theory of fermion masses and mixing
|
predictive pati-salam theory of fermion masses and mixing
|
propose pati salam incorporating flavor delta group. realizes realistic froggatt nielsen picture predictive oscillations. ordering octant violated oscillations beta beta rate. inverted ordering octant preferred conserved oscillations. arise seesaw messengers prime portal pages versio
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non_dup
|
[] |
78511543
|
10.1007/JHEP07(2017)123
|
In this paper we study the consistency of generalized global symmetries in
theories of quantum gravity, in particular string theory. Such global
symmetries arise in theories with $(p+1)$-form gauge fields, and for spacetime
dimension $d\leq p+3$ there are obstructions to their breaking even by quantum
effects of charged objects. In 4d theories with a 2-form gauge field (or with
an axion scalar), these fields endow Schwarzschild black holes with quantum
hair, a global charge leading to usual trouble with remnants. We describe
precise mechanisms, and examples from string compactifications and holographic
pairs, in which these problems are evaded by either gauging or breaking the
global symmetry, via (suitable versions of) Stuckelberg or Kaloper-Sorbo
couplings. We argue that even in the absence of such couplings, the generic
solution in string theory is the breaking of the global symmetries by cubic
Chern-Simons terms involving different antisymmetric tensor fields. We
conjecture that any theory with (standard or higher-degree antisymmetric
tensor) gauge fields is in the Swampland unless its effective action includes
such Chern-Simons terms. This conjecture implies that many familiar theories,
like QED (even including the charged particles required by the Weak Gravity
Conjecture) or $\mathcal{N}=8$ supergravity in four dimensions, are
inconsistent in quantum gravity unless they are completed by these Chern-Simons
terms.Comment: 60 pages, 2 figure
|
A Chern-Simons Pandemic
|
a chern-simons pandemic
|
consistency symmetries theory. symmetries arise spacetime obstructions breaking objects. axion endow schwarzschild holes hair usual trouble remnants. precise compactifications holographic evaded gauging breaking versions stuckelberg kaloper sorbo couplings. argue couplings generic breaking symmetries cubic chern simons involving antisymmetric fields. conjecture antisymmetric swampland unless chern simons terms. conjecture familiar conjecture mathcal supergravity inconsistent unless completed chern simons pages
|
non_dup
|
[] |
83837630
|
10.1007/JHEP07(2017)124
|
We discuss Yukawa-enhanced contributions from $Z$-mediated new physics to
down-type quark $\Delta F=2$ processes in the framework of the standard model
gauge-invariant effective theory (SMEFT). Besides the renormalization group
(RG) mixing of the $Z$-mediating $\psi^2 H^2 D$ operators into $\Delta F = 2$
operators, we include at the electroweak scale one-loop (NLO) matching
corrections consistently, necessary for the removal of the matching scale
dependence. We point out that the right-handed $Z$-mediated interactions
generate through Yukawa RG mixing $\Delta F=2$ left-right operators, which are
further enhanced through QCD RG effects and chirally enhanced hadronic matrix
elements. We investigate the impact of these new effects on the known
correlations between $\Delta F=2$ and $\Delta F=1$ transitions in the SMEFT
framework and point out qualitative differences to previous parameterizations
of $Z$-mediated new physics that arise for the left-handed case. We illustrate
how specific models fit into our model-independent framework by using four
models with vector-like quarks. We carry out model-independent analyses of
scenarios with purely left-handed and purely right-handed new-physics $Z$
couplings for each of the three sectors $s\to d$, $b\to s$ and $b\to d$.
Specifically we discuss the correlations between $\varepsilon'/\varepsilon$,
$\varepsilon_K$, $K_L\to \mu^+\mu^-$ $K^+\to \pi^+\nu\bar\nu$ and
$K_L\to\pi^0\nu\bar\nu$ in the Kaon sector, and $\phi_s$, $B_s\to\mu^+\mu^-$
and $B\to K^{(*)} (\mu^+\mu^-, \nu\bar\nu)$ in the $b\to s$ sector and
$B_d\to\mu^+\mu^-$ in the $b\to d$ sector.Comment: 40 pages, 11 figures; v2: 2nd plot in figure 2 and references added,
comparison with v2 of 1612.08839, conclusion unchanged; v3: improvements on
text and presentation, matches published versio
|
Yukawa enhancement of $Z$-mediated New Physics in $\Delta S = 2$ and
$\Delta B = 2$ Processes
|
yukawa enhancement of $z$-mediated new physics in $\delta s = 2$ and $\delta b = 2$ processes
|
yukawa delta smeft besides renormalization mediating delta electroweak matching consistently removal matching dependence. handed yukawa delta chirally hadronic elements. delta delta smeft qualitative parameterizations arise handed case. illustrate quarks. carry scenarios purely handed purely handed couplings sectors varepsilon varepsilon varepsilon kaon pages unchanged improvements presentation matches versio
|
non_dup
|
[] |
83842674
|
10.1007/JHEP07(2017)125
|
In all supersymmetric theories, gravitinos, with mass suppressed by the
Planck scale, are an obvious candidate for dark matter; but if gravitinos ever
reached thermal equilibrium, such dark matter is apparently either too abundant
or too hot, and is excluded. However, in theories with an axion, a saxion
condensate is generated during an early era of cosmological history and its
late decay dilutes dark matter. We show that such dilution allows previously
thermalized gravitinos to account for the observed dark matter over very wide
ranges of gravitino mass, keV < $m_{3/2}$ < TeV, axion decay constant, $10^9$
GeV < $f_a$ < $10^{16}$ GeV, and saxion mass, 10 MeV < $m_s$ < 100 TeV.
Constraints on this parameter space are studied from BBN, supersymmetry
breaking, gravitino and axino production from freeze-in and saxion decay, and
from axion production from both misalignment and parametric resonance
mechanisms. Large allowed regions of $(m_{3/2}, f_a, m_s)$ remain, but differ
for DFSZ and KSVZ theories. Superpartner production at colliders may lead to
events with displaced vertices and kinks, and may contain saxions decaying to
$(WW,ZZ,hh), gg, \gamma \gamma$ or a pair of Standard Model fermions. Freeze-in
may lead to a sub-dominant warm component of gravitino dark matter, and saxion
decay to axions may lead to dark radiation.Comment: 30 pages, 4 figure
|
Saxion Cosmology for Thermalized Gravitino Dark Matter
|
saxion cosmology for thermalized gravitino dark matter
|
supersymmetric gravitinos suppressed planck obvious candidate gravitinos ever reached apparently abundant excluded. axion saxion condensate cosmological dilutes matter. dilution thermalized gravitinos ranges gravitino axion saxion tev. supersymmetry breaking gravitino axino freeze saxion axion misalignment parametric mechanisms. dfsz ksvz theories. superpartner colliders displaced kinks saxions decaying gamma gamma fermions. freeze warm gravitino saxion axions pages
|
non_dup
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[] |
73442155
|
10.1007/JHEP07(2017)126
|
In this letter we bring together the physics of preheating, following a
period of inflation, and the dynamics of non-topological solitons, namely
oscillons. We show that the oscillating condensate that makes up an oscillon
can be an efficient engine for producing heavy fermions, just as a homogeneous
condensate is known for doing the same. This then allows heavy fermions to be
produced when the energy scale of the Universe has dropped below the scale
naturally associated to the fermions.Comment: 6 pages, 2 figures. Included new data, and references. Version
accepted for publication in JHE
|
Recrudescence of massive fermion production by oscillons
|
recrudescence of massive fermion production by oscillons
|
letter bring preheating inflation topological solitons oscillons. oscillating condensate oscillon engine producing fermions homogeneous condensate same. fermions universe dropped naturally pages figures. references. publication
|
non_dup
|
[] |
83836439
|
10.1007/JHEP07(2017)127
|
In this paper and a companion one, we study the effect of integrable line
defects on entanglement entropy in massive integrable field theories in 1+1
dimensions. The current paper focuses on topological defects that are purely
transmissive. Using the form factor bootstrap method, we show that topological
defects do not affect the the entanglement entropy in the UV limit and modify
slightly the leading exponential correction in the IR. This conclusion holds
for both unitary and non-unitary field theories. In contrast, non-topological
defects affect the entanglement entropy more significantly both in UV and IR
limit and will be studied in the companion paper.Comment: 30 pages, references added, typos correcte
|
Entanglement Entropy in Integrable Field Theories with Line Defects I.
Topological Defect
|
entanglement entropy in integrable field theories with line defects i. topological defect
|
companion integrable defects entanglement massive integrable dimensions. focuses topological defects purely transmissive. bootstrap topological defects entanglement modify exponential unitary unitary theories. topological defects entanglement companion pages typos correcte
|
non_dup
|
[] |
83832038
|
10.1007/JHEP07(2017)129
|
We provide the first explicit example of Type IIB string theory
compactification on a globally defined Calabi-Yau threefold with torsion which
results in a four-dimensional effective theory with a non-Abelian discrete
gauge symmetry. Our example is based on a particular Calabi-Yau manifold, the
quotient of a product of three elliptic curves by a fixed point free action of
Z_2 x Z_2. Its cohomology contains torsion classes in various degrees. The main
technical novelty is in determining the multiplicative structure of the
(torsion part of) the cohomology ring, and in particular showing that the cup
product of second cohomology torsion elements goes non-trivially to the fourth
cohomology. This specifies a non-Abelian, Heisenberg-type discrete symmetry
group of the four-dimensional theory.Comment: 17 page
|
Type II String Theory on Calabi-Yau Manifolds with Torsion and
Non-Abelian Discrete Gauge Symmetries
|
type ii string theory on calabi-yau manifolds with torsion and non-abelian discrete gauge symmetries
|
compactification globally calabi threefold torsion abelian symmetry. calabi manifold quotient elliptic cohomology torsion degrees. novelty determining multiplicative torsion cohomology cohomology torsion goes trivially fourth cohomology. specifies abelian heisenberg
|
non_dup
|
[] |
83854341
|
10.1007/JHEP07(2017)130
|
The LHC has recently released precise measurements of the transverse momentum
distribution of the Z-boson that provide a unique constraint on the structure
of the proton. Theoretical developments now allow the prediction of these
observables through next-to-next-to-leading order (NNLO) in perturbative QCD.
In this work we study the impact of incorporating these latest advances into a
determination of parton distribution functions (PDFs) through NNLO including
the recent ATLAS and CMS 7 TeV and 8 TeV $p_T^Z$ data. We investigate the
consistency of these measurements in a global fit to the available data and
quantify the impact of including the $p_T^Z$ distributions on the PDFs. The
inclusion of these new data sets significantly reduces the uncertainties on
select parton distributions and the corresponding parton-parton luminosities.
In particular, we find that the $p_T^Z$ data ultimately leads to a reduction of
the PDF uncertainty on the gluon-fusion and vector-boson fusion Higgs
production cross sections by about 30%, while keeping the central values nearly
unchanged.Comment: 36 pages, 18 figure
|
The impact of the LHC Z-boson transverse momentum data on PDF
determinations
|
the impact of the lhc z-boson transverse momentum data on pdf determinations
|
released precise boson proton. developments observables nnlo perturbative qcd. incorporating latest advances parton pdfs nnlo atlas data. consistency quantify pdfs. inclusion reduces select parton parton parton luminosities. ultimately gluon fusion boson fusion keeping nearly pages
|
non_dup
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[] |
83853636
|
10.1007/JHEP07(2017)131
|
It was recently shown that the CFT dual of string theory on ${\rm AdS}_3
\times {\rm S}^3 \times T^4$, the symmetric orbifold of $T^4$, contains a
closed higher spin subsector. Via holography, this makes precise the sense in
which tensionless string theory on this background contains a Vasiliev higher
spin theory. In this paper we study this phenomenon directly from the
worldsheet. Using the WZW description of the background with pure NS-NS flux,
we identify the states that make up the leading Regge trajectory and show that
they fit into the even spin ${\cal N}=4$ Vasiliev higher spin theory. We also
show that these higher spin states do not become massless, except for the
somewhat singular case of level $k=1$ where the theory contains a stringy tower
of massless higher spin fields coming from the long string sector.Comment: 29+8 pages, 3 figure
|
Higher spins on AdS$_{3}$ from the worldsheet
|
higher spins on ads$_{3}$ from the worldsheet
|
orbifold subsector. holography precise tensionless vasiliev theory. phenomenon worldsheet. regge trajectory vasiliev theory. massless somewhat singular stringy tower massless coming pages
|
non_dup
|
[] |
83847179
|
10.1007/JHEP07(2017)132
|
We perform a phenomenological study of the invariant mass distribution of
hadronic jets produced in proton-proton collisions, in conjunction a grooming
algorithm. In particular, we consider the modified MassDrop Tagger (mMDT),
which corresponds to Soft Drop with angular exponent $\beta=0$. Our
calculation, which is differential in both jet mass and jet transverse
momentum, resums large logarithms of the jet mass, including the full
dependence on the groomer's energy threshold $z_\text{cut}$, and it is matched
to fixed-order QCD matrix elements at next-to-leading order. In order to
account for non-perturbative contributions, originating from the hadronisation
process and from the underlying event, we also include a phenomenological
correction factor derived from Monte Carlo parton-shower simulations.
Furthermore, we consider two different possibilities for the jet transverse
momentum: before or after grooming. We show that the former should be preferred
for comparisons with upcoming experimental data essentially because the mMDT
transverse momentum spectrum is not collinear safe.Comment: 38 pages; 17 figures. Version accepted by JHE
|
A study of jet mass distributions with grooming
|
a study of jet mass distributions with grooming
|
phenomenological hadronic jets proton proton collisions conjunction grooming algorithm. massdrop tagger mmdt drop exponent beta resums logarithms groomer matched order. perturbative originating hadronisation phenomenological monte carlo parton shower simulations. possibilities grooming. former preferred comparisons upcoming essentially mmdt collinear pages figures.
|
non_dup
|
[] |
83857195
|
10.1007/JHEP07(2017)133
|
We compute the parity violating three point amplitudes with one scalar leg in
higher spin gravity and compare results with those of Chern-Simons matter
theories. The three-point correlators of the free boson, free fermion, critical
vector model and Gross-Neveu model are reproduced including the dependence on
the Chern-Simons coupling. We also perform a simple test of the modified higher
spin equations proposed in arXiv:1605.02662 [hep-th] and find that the results
are consistent with the AdS/CFT correspondence.Comment: 39 pages; minor corrections and refs adde
|
Chern-Simons Matter Theories and Higher Spin Gravity
|
chern-simons matter theories and higher spin gravity
|
parity violating amplitudes chern simons theories. correlators boson fermion gross neveu reproduced chern simons coupling. pages minor refs adde
|
non_dup
|
[] |
83848989
|
10.1007/JHEP07(2017)134
|
We investigate thermal activation of thin-shells around anti-de Sitter black
holes. Under the thin-shell approximation, we extensively study the parameter
region that allows a bubble nucleation bounded by a thin-shell out of a thermal
bath. We show that in general if one fixes the temperature outside the shell,
one needs to consider the presence of a conical deficit inside the shell in the
Euclidean manifold, due to the lack of solutions with a smooth manifold. We
show that for a given set of theoretical parameters, i.e., vacuum and shell
energy density, there is a finite range of black hole masses that allow this
transition. Most interestingly, one of them describes the complete evaporation
of the initial black hole.Comment: published versio
|
Thermal activation of thin-shells in anti-de Sitter black hole spacetime
|
thermal activation of thin-shells in anti-de sitter black hole spacetime
|
shells sitter holes. extensively bubble nucleation bath. fixes conical deficit euclidean manifold manifold. i.e. transition. interestingly describes evaporation versio
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non_dup
|
[] |
83850423
|
10.1007/JHEP07(2017)135
|
In holographic applications one can encounter scenarios where a
long-wavelength instability can arise. In such situations, it is often the case
that the dynamical end point of the instability is a new equilibrium phase with
a nonlinear scalar hair condensate outside the black hole horizon. We here
review holographic setups where symmetric horizons suffer from long-wavelength
instabilities where a suitable equilibrium condensate phase does not exist. We
study the dynamics of the simplest model in this exotic class, and show that it
uncovers arbitrarily large curvatures in the vicinity of the horizon which
asymptotically turn such region singular, at finite time with respect to the
boundary theory.Comment: 38 pages, 41 figure
|
Unstable horizons and singularity development in holography
|
unstable horizons and singularity development in holography
|
holographic encounter scenarios instability arise. situations instability hair condensate horizon. holographic setups horizons suffer instabilities condensate exist. simplest exotic uncovers arbitrarily curvatures vicinity horizon asymptotically singular pages
|
non_dup
|
[] |
83866965
|
10.1007/JHEP07(2017)136
|
We present a $D$-dimensional charged Anti-de-Sitter black hole solutions in
$f(T)$ gravity, where $f(T)=T+\beta T^2$ and $D \geq 4$. These solutions are
characterized by flat or cylindrical horizons. The interesting feature of these
solutions is the existence of inseparable electric monopole and quadrupole
terms in the potential which share related momenta, in contrast with most of
the known charged black hole solutions in General Relativity and its
extensions. Furthermore, these solutions have curvature singularities which are
milder than those of the known charged black hole solutions in General
Relativity and Teleparallel Gravity. This feature can be shown by calculating
some invariants of curvature and torsion tensors. Furthermore, we calculate the
total energy of these black holes using the energy-momentum tensor. Finally, we
show that these charged black hole solutions violate the first law of
thermodynamics in agreement with previous results.Comment: 11 Pages, will appear in JHE
|
$D$-dimensional charged Anti-de-Sitter black holes in $f(T)$ gravity
|
$d$-dimensional charged anti-de-sitter black holes in $f(t)$ gravity
|
sitter beta cylindrical horizons. inseparable monopole quadrupole share momenta relativity extensions. curvature singularities milder relativity teleparallel gravity. calculating invariants curvature torsion tensors. holes tensor. violate thermodynamics pages
|
non_dup
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[] |
83832871
|
10.1007/JHEP07(2017)137
|
Effective field theories such as Heavy Quark Effective Theory (HQET) and Non
Relativistic Quantum Chromo-(Electro-) dynamics NRQCD (NRQED) are indispensable
tools in controlling the effects of the strong interaction. The increasing
experimental precision requires the knowledge of higher dimensional operators.
We present a general method that allows for an easy construction of HQET or
NRQCD (NRQED) operators that contain two heavy quark or non-relativistic fields
and any number of covariant derivatives. As an application of our method, we
list these terms in the $1/M^4$ NRQCD Lagrangian, where $M$ is the mass of of
the spin-half field.Comment: 28 pages, footnote added, journal versio
|
On HQET and NRQCD Operators of Dimension 8 and Above
|
on hqet and nrqcd operators of dimension 8 and above
|
hqet relativistic chromo electro nrqcd nrqed indispensable controlling interaction. precision operators. hqet nrqcd nrqed relativistic covariant derivatives. nrqcd lagrangian pages footnote versio
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73412035
|
10.1007/JHEP07(2017)138
|
We compute one-loop amplitudes in six-dimensional Yang-Mills theory with
half-maximal supersymmetry from first principles: imposing gauge invariance and
locality on an ansatz made from string-theory inspired kinematic building
blocks yields unique expressions for the 3- and 4-point amplitudes. We check
that the results are reproduced in the field-theory limit $\alpha' \rightarrow
0$ of string amplitudes in K3 orbifolds, using simplifications made in a
companion string-theory paper 1603.05262.Comment: 59 pages, 11 figures, published versio
|
String-motivated one-loop amplitudes in gauge theories with half-maximal
supersymmetry
|
string-motivated one-loop amplitudes in gauge theories with half-maximal supersymmetry
|
amplitudes mills maximal supersymmetry principles imposing invariance locality ansatz inspired kinematic blocks expressions amplitudes. check reproduced alpha rightarrow amplitudes orbifolds simplifications companion pages versio
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non_dup
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[] |
83867747
|
10.1007/JHEP07(2017)139
|
Current experimental sensitivity on neutrino magnetic moments is many orders
of magnitude above the Standard Model prediction. A potential measurement of
next-generation experiments would therefore strongly request new physics beyond
the Standard Model. However, large neutrino magnetic moments generically tend
to induce large corrections to the neutrino masses and lead to fine-tuning. We
show that in a model where neutrino masses are proportional to neutrino
magnetic moments. We revisit, discuss and propose mechanisms that still provide
theoretical consistent explanations for a potential measurement of large
neutrino magnetic moments. We find only two viable mechanisms to realize large
transition magnetic moments for Majorana neutrinos only.Comment: 12 pages, 7 figure
|
Revisiting Large Neutrino Magnetic Moments
|
revisiting large neutrino magnetic moments
|
moments orders prediction. request model. moments generically tend induce fine tuning. moments. revisit propose explanations moments. viable realize moments majorana neutrinos pages
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[] |
83851644
|
10.1007/JHEP07(2017)140
|
In the singlet-triplet majoron model of neutrino mass, lepton number is
spontaneously broken. If it is also softly broken, then a naturally light
pseudoscalar particle $\eta_I$ exists. It may then act as a light mediator for
a real singlet scalar $\chi$ with odd dark parity. It is itself unstable, but
decays dominantly to two neutrinos through its triplet scalar component,
thereby not disturbing the cosmic microwave background (CMB). It also mixes
with the standard-model Higgs boson only in one loop, thereby not contributing
significantly to the elastic scattering of $\chi$ off nuclei in dark-matter
direct-search experiments.Comment: 10 page
|
Pseudo-Majoron as Light Mediator of Singlet Scalar Dark Matter
|
pseudo-majoron as light mediator of singlet scalar dark matter
|
singlet triplet majoron lepton spontaneously broken. softly broken naturally pseudoscalar exists. mediator singlet parity. unstable decays dominantly neutrinos triplet thereby disturbing cosmic microwave mixes boson thereby contributing elastic nuclei
|
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[] |
84328261
|
10.1007/JHEP07(2017)141
|
Realistic modeling of medium-jet interactions in heavy ion collisions is
becoming increasingly important to successfully predict jet structure and shape
observables. In JEWEL, all partons belonging to the parton showers initiated by
hard scattered partons undergo collisions with thermal partons from the medium,
leading to both elastic and radiative energy loss. The recoiling medium partons
carry away energy and momentum from the jet. Since the thermal component of
these recoils' momenta is part of the soft background activity, comparison with
data requires the implementation of a subtraction procedure. We present two
independent procedures through which background subtraction can be performed
and discuss the impact of the medium recoil on jet shape observables. Keeping
track of the medium response significantly improves the JEWEL description of
jet shape measurements.Comment: 23 pages, 16 figure
|
Medium response in JEWEL and its impact on jet shape observables in
heavy ion collisions
|
medium response in jewel and its impact on jet shape observables in heavy ion collisions
|
realistic collisions becoming increasingly successfully predict observables. jewel partons belonging parton showers initiated scattered partons undergo collisions partons elastic radiative loss. recoiling partons carry away jet. recoils momenta subtraction procedure. subtraction recoil observables. keeping track improves jewel pages
|
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[] |
84092961
|
10.1007/JHEP07(2017)142
|
BMS symmetry, which is the asymptotic symmetry at null infinity of flat
spacetime, is an important input for flat holography. In this paper, we give a
holographic calculation of entanglement entropy and R\'{e}nyi entropy in three
dimensional Einstein gravity and Topologically Massive Gravity. The geometric
picture for the entanglement entropy is the length of a spacelike geodesic
which is connected to the interval at null infinity by two null geodesics. The
spacelike geodesic is the fixed points of replica symmetry, and the null
geodesics are along the modular flow. Our strategy is to first reformulate the
Rindler method for calculating entanglement entropy in a general setup, and
apply it for BMS invariant field theories, and finally extend the calculation
to the bulk.Comment: 48pages, 1 figur
|
Entanglement Entropy in Flat Holography
|
entanglement entropy in flat holography
|
asymptotic infinity spacetime holography. holographic entanglement einstein topologically massive gravity. geometric picture entanglement spacelike geodesic infinity geodesics. spacelike geodesic replica geodesics modular flow. reformulate rindler calculating entanglement setup extend pages figur
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[] |
83851191
|
10.1007/JHEP07(2017)143
|
We explore the implications of the Borexino experiment's real time
measurements of the lowest energy part of the neutrino spectrum from the
primary pp fusion process up to 0.420 MeV through the 7^Be decay at 0.862 MeV
to the pep reaction at 1.44 MeV. We exploit the fact that at such low energies,
the large mixing angle solution to the Mikheyev-Smirnov-Wolfenstein matter
effects in the sun are small for 7^Be and pep and negligible for pp.
Consequently, the neutrinos produced in the sun change their flavor almost
entirely through vacuum oscillations during propagation from the sun's surface
and through possible nonstandard interactions acting at the solar source and
Borexino detector. We combine the different NSI effects at source and detector
in a single framework and use the current Borexino data to bound NSI
non-universal and flavor- changing parameters at energies below the reach of
reactor neutrino experiments. We also study the implication of the current data
for the weak- mixing angle at this "low-energy frontier" data from the Borexino
experiment, where it is expected to be slightly larger than its value at the Z
mass. We find $\sin^2(\theta)w=0.224+-0.016$, the lowest energy-scale estimate
to date. Looking to the future, we use projected sensitivities to solar
neutrinos in next generation dedicated solar experiments and direct dark matter
detection experiments and find a potential factor five improvement in
determination of the weak-mixing angle and up to an order of magnitude
improvement in probing the NSI parameters space.Comment: 20 pages, 09 figures, lowest-energy value of sin^2(theta)w to date
has been reported. Some text added. New sub-section(7.5) added. Published in
JHE
|
$\sin^2(\theta)w$ estimate and bounds on nonstandard interactions at
source and detector in the solar neutrino low-energy regime
|
$\sin^2(\theta)w$ estimate and bounds on nonstandard interactions at source and detector in the solar neutrino low-energy regime
|
explore borexino fusion mev. exploit mikheyev smirnov wolfenstein negligible neutrinos flavor entirely oscillations propagation nonstandard acting borexino detector. combine borexino universal flavor changing reactor experiments. implication frontier borexino mass. theta date. looking projected sensitivities neutrinos dedicated probing pages theta reported. added. added.
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[] |
73389692
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10.1007/JHEP07(2017)144
|
We consider bosonic random matrix partition functions at nonzero chemical
potential and compare the chiral condensate, the baryon number density and the
baryon number susceptibility to the result of the corresponding fermionic
partition function. We find that as long as results are finite, the phase
transition of the fermionic theory persists in the bosonic theory. However, in
case that bosonic partition function diverges and has to be regularized, the
phase transition of the fermionic theory does not occur in the bosonic theory,
and the bosonic theory is always in the broken phase.Comment: 30 pages, 6 figure
|
Bosonic Partition Functions at Nonzero (Imaginary) Chemical Potential
|
bosonic partition functions at nonzero (imaginary) chemical potential
|
bosonic partition nonzero chiral condensate baryon baryon susceptibility fermionic partition function. fermionic persists bosonic theory. bosonic partition diverges regularized fermionic bosonic bosonic broken pages
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[] |
83838653
|
10.1007/JHEP07(2017)145
|
We continue the investigation of F-term axion monodromy inflation in string
theory, while seriously taking the issue of moduli stabilization into account.
For a number of closed and open string models, we show that they suffer from
serious control issues once one is trying to realize trans-Planckian field
excursions. More precisely, the flux tuning required to delay the logarithmic
scaling of the field distance to a trans-Planckian value cannot be done without
leaving the regime where the employed effective supergravity theory is under
control. Our findings are consistent with the axionic extension of the Refined
Swampland Conjecture, stating that in quantum gravity the effective theory
breaks down for a field excursion beyond the Planck scale. Our analysis
suggests that models of F-term axion monodromy inflation with a
tensor-to-scalar ratio $r\ge O(10^{-3})$ cannot be parametrically controlled.Comment: 50 pages, 3 figures, v2: typos corrected and references adde
|
The Swampland Conjecture and F-term Axion Monodromy Inflation
|
the swampland conjecture and f-term axion monodromy inflation
|
continue axion monodromy inflation seriously moduli stabilization account. suffer serious trying realize planckian excursions. precisely tuning delay logarithmic planckian leaving supergravity control. axionic refined swampland conjecture stating breaks excursion planck scale. axion monodromy inflation parametrically pages typos corrected adde
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[] |
83849117
|
10.1007/JHEP07(2017)146
|
We study two-loop quantum corrections to the low-energy effective actions in
N=(2,2) and N=(4,4) SQED in the Coulomb branch. In the latter model, the
low-energy effective action is described by a generalized Kahler potential
which depends on both chiral and twisted chiral superfields. We demonstrate
that this generalized Kahler potential is one-loop exact and corresponds to the
N=(4,4) sigma-model with torsion presented by Rocek, Schoutens and Sevrin. In
the N=(2,2) SQED, the effective Kahler potential is not protected against
higher-loop quantum corrections. The two-loop quantum corrections to this
potential and the corresponding sigma-model metric are explicitly found.Comment: 40 pages; v2: references added, typos correcte
|
Low-energy effective action in two-dimensional SQED: A two-loop analysis
|
low-energy effective action in two-dimensional sqed: a two-loop analysis
|
sqed coulomb branch. kahler chiral twisted chiral superfields. kahler sigma torsion rocek schoutens sevrin. sqed kahler protected corrections. sigma explicitly pages typos correcte
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non_dup
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[] |
83858332
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10.1007/JHEP07(2017)147
|
We study two-dimensional Einstein-aether (or equivalently
Ho\v{r}ava-Lifshitz) gravity, which has an $AdS_2$ solution. We examine various
properties of this solution in the context of holography. We first show that
the asymptotic symmetry group is the full set of time reparametrizations, the
one-dimensional conformal group. At the same time there are configurations with
finite energy and temperature, which indicate a violation of the Ward identity
associated with one-dimensional conformal invariance. These solutions are
characterized by a universal causal horizon and we show that the associated
entropy of the universal horizon scales with the logarithm of the temperature.
We discuss the puzzles associated with this result and argue that the violation
of the Ward identity is associated with a type of explicit breaking of time
reparametrizations in the hypothetical $0+1$ dimensional dual system.Comment: 19 pages, v2: minor revisions, references adde
|
Holography and $AdS_2$ gravity with a dynamical aether
|
holography and $ads_2$ gravity with a dynamical aether
|
einstein aether equivalently lifshitz solution. examine holography. asymptotic reparametrizations conformal group. configurations violation ward conformal invariance. universal causal horizon universal horizon logarithm temperature. puzzles argue violation ward breaking reparametrizations hypothetical pages minor revisions adde
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[] |
73992810
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10.1007/JHEP07(2017)148
|
We explain a reparameterization invariance in the Standard Model Effective
Field Theory present when considering $\bar{\psi} \psi \rightarrow \bar{\psi}
\psi$ scatterings (with $\psi$ a fermion) and how this leads to unconstrained
combinations of Wilson coefficients in global data analyses restricted to these
measurements. We develop a $\{\hat{m}_W, \hat{m}_Z,\hat{G}_F\}$ input parameter
scheme and compare results to the case when an input parameter set
$\{\hat{\alpha}, \hat{m}_Z,\hat{G}_F\}$ is used to constrain this effective
theory from the global data set, confirming the input parameter independence of
the unconstrained combinations of Wilson coefficients, and supporting the
reparameterization invariance explanation. We discuss some conceptual issues
related to these degeneracies that are relevant for LHC data reporting and
analysis.Comment: 41 pages, 8 tables, 8 figures. addendum in appendix - results
obtained allowing two independent flavor contractions for the operator Q_ll
in the U(3)^5 flavor symmetric limi
|
Scheming in the SMEFT... and a reparameterization invariance!
|
scheming in the smeft... and a reparameterization invariance!
|
reparameterization invariance rightarrow scatterings fermion unconstrained combinations wilson restricted measurements. alpha constrain confirming independence unconstrained combinations wilson supporting reparameterization invariance explanation. conceptual degeneracies reporting pages tables figures. addendum allowing flavor contractions flavor limi
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[] |
83850430
|
10.1007/JHEP07(2017)149
|
We discuss dynamical response functions near quantum critical points,
allowing for both a finite temperature and detuning by a relevant operator.
When the quantum critical point is described by a conformal field theory (CFT),
conformal perturbation theory and the operator product expansion can be used to
fix the first few leading terms at high frequencies. Knowledge of the high
frequency response allows us then to derive non-perturbative sum rules. We
show, via explicit computations, how holography recovers the general results of
CFT, and the associated sum rules, for any holographic field theory with a
conformal UV completion -- regardless of any possible new ordering and/or
scaling physics in the IR. We numerically obtain holographic response functions
at all frequencies, allowing us to probe the breakdown of the asymptotic
high-frequency regime. Finally, we show that high frequency response functions
in holographic Lifshitz theories are quite similar to their conformal
counterparts, even though they are not strongly constrained by symmetry.Comment: 45+14 pages, 9 figures. v2: small clarifications, added reference
|
Quantum critical response: from conformal perturbation theory to
holography
|
quantum critical response: from conformal perturbation theory to holography
|
allowing detuning operator. conformal conformal perturbation frequencies. derive perturbative rules. computations holography recovers holographic conformal completion regardless ordering numerically holographic allowing breakdown asymptotic regime. holographic lifshitz conformal counterparts constrained pages figures. clarifications
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non_dup
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[] |
83863816
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10.1007/JHEP07(2017)150
|
The Sachdev-Ye-Kitaev (SYK) model describes Majorana fermions with random
interaction, which displays many interesting properties such as non-Fermi
liquid behavior, quantum chaos, emergent conformal symmetry and holographic
duality. Here we consider a SYK model or a chain of SYK models with $N$
Majorana fermion modes coupled to another SYK model with $N^2$ Majorana fermion
modes, in which the latter has many more degrees of freedom and plays the role
as a thermal bath. For a single SYK model coupled to the thermal bath, we show
that although the Lyapunov exponent is still proportional to temperature, it
monotonically decreases from $2\pi/\beta$ ($\beta=1/(k_BT)$, $T$ is
temperature) to zero as the coupling strength to the thermal bath increases.
For a chain of SYK models, when they are uniformly coupled to the thermal bath,
we show that the butterfly velocity displays a crossover from a
$\sqrt{T}$-dependence at relatively high temperature to a linear $T$-dependence
at low temperature, with the crossover temperature also controlled by the
coupling strength to the thermal bath. If only the end of the SYK chain is
coupled to the thermal bath, the model can introduce a spatial dependence of
both the Lyapunov exponent and the butterfly velocity. Our models provide
canonical examples for the study of thermalization within chaotic models.Comment: 28 pages, 9 figures. References adde
|
Tunable Quantum Chaos in the Sachdev-Ye-Kitaev Model Coupled to a
Thermal Bath
|
tunable quantum chaos in the sachdev-ye-kitaev model coupled to a thermal bath
|
sachdev kitaev describes majorana fermions displays fermi chaos emergent conformal holographic duality. majorana fermion majorana fermion freedom plays bath. bath lyapunov exponent monotonically beta beta bath increases. uniformly bath butterfly displays crossover sqrt crossover bath. bath lyapunov exponent butterfly velocity. canonical thermalization chaotic pages figures. adde
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83850433
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10.1007/JHEP07(2017)151
|
We study the reconstruction of bulk operators in the entanglement wedge in
terms of low energy operators localized in the respective boundary region. To
leading order in $N$, the dual boundary operators are constructed from the
modular flow of single trace operators in the boundary subregion. The
appearance of modular evolved boundary operators can be understood due to the
equality between bulk and boundary modular flows and explicit formulas for bulk
operators can be found with a complete understanding of the action of bulk
modular flow, a difficult but in principle solvable task. We also obtain an
expression when the bulk operator is located on the Ryu-Takayanagi surface
which only depends on the bulk to boundary correlator and does not require the
explicit use of bulk modular flow. This expression generalizes the geodesic
operator/OPE block dictionary to general states and boundary regions.Comment: 36 pages, 2 figure
|
Bulk locality from modular flow
|
bulk locality from modular flow
|
reconstruction entanglement wedge localized respective region. modular trace subregion. appearance modular evolved understood equality modular flows formulas modular solvable task. takayanagi correlator modular flow. generalizes geodesic dictionary pages
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non_dup
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[] |
146471655
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10.1007/JHEP07(2018)007
|
This paper presents a study of a possible contribution to a Higgs boson
signal in the $hh\to \gamma\gamma\gamma\gamma$ channel due to $H\to hh$ decays,
in the framework of the CP-conserving 2-Higgs Doublet Model Type-I (2HDM-I),
where the heavier of the two CP-even Higgs bosons defined herein, $H$, is the
SM-like Higgs state observed with a mass of 125 GeV at the Large Hadron
Collider (LHC). We perform a broad scan of the 2HDM-I parameter space, in
presence of both up-to-date theoretical and experimental constraints, in order
to extract the interesting regions yielding such a signal. Then, after
validating our numerical framework against public experimental analyses carried
out at the LHC, we proceed to assess its scope in constraining and/or
extracting the $gg\to H\to hh\to \gamma\gamma\gamma\gamma$ signal in presence
of a sophisticated Monte Carlo (MC) simulation. We find that, over a
substantial region of the 2HDM-I parameter space presently un-accessible, the
LHC will be able to establish such a potential signature in the next 2--3
years.Comment: 14 pages, 7 figures, corrected Figure.4 (c) and typo
|
Multi-photon production in the Type-I 2HDM
|
multi-photon production in the type-i 2hdm
|
presents boson gamma gamma gamma gamma decays conserving doublet heavier bosons herein hadron collider broad scan extract yielding signal. validating proceed scope constraining extracting gamma gamma gamma gamma sophisticated monte carlo simulation. substantial presently accessible establish signature pages corrected figure. typo
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141533991
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10.1007/JHEP07(2018)013
|
We study entanglement entropy in free Lifshitz scalar field theories
holographically by employing the metrics proposed by Nozaki, Ryu and Takayanagi
in \cite{Nozaki:2012zj} obtained from a continuous multi-scale entanglement
renormalisation ansatz (cMERA). In these geometries we compute the minimal
surface areas governing the entanglement entropy as functions of the dynamical
exponent $z$ and we exhibit a transition from an area law to a volume law
analytically in the limit of large $z$. We move on to explore the effects of a
massive deformation, obtaining results for any $z$ in arbitrary dimension. We
then trigger a renormalisation group flow between a Lifshitz theory and a
conformal theory and observe a monotonic decrease in entanglement entropy along
this flow. We focus on strip regions but also consider a disc in the undeformed
theory.Comment: 17 pages, v2: references added and improved discussions, v3:
published versio
|
Lifshitz entanglement entropy from holographic cMERA
|
lifshitz entanglement entropy from holographic cmera
|
entanglement lifshitz holographically employing metrics nozaki takayanagi cite nozaki entanglement renormalisation ansatz cmera geometries governing entanglement exponent exhibit analytically move explore massive deformation obtaining dimension. trigger renormalisation lifshitz conformal monotonic entanglement flow. strip disc undeformed pages discussions versio
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141536427
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10.1007/JHEP07(2018)014
|
Analog condensed matter systems present an exciting opportunity to simulate
early Universe models in table-top experiments. We consider a recent proposal
for an analog condensed matter experiment to simulate the relativistic quantum
decay of the false vacuum. In the proposed experiment, two ultra-cold
condensates are coupled via a time-varying radio-frequency field. The relative
phase of the two condensates in this system is approximately described by a
relativistic scalar field with a potential possessing a series of false and
true vacuum local minima. If the system is set up in a false vacuum, it would
then decay to a true vacuum via quantum mechanical tunnelling. Should such an
experiment be realized, it would be possible to answer a number of open
questions regarding non-perturbative phenomena in quantum field theory and
early Universe cosmology. In this paper, we illustrate a possible obstruction:
the time-varying coupling that is invoked to create a false vacuum for the
long-wavelength modes of the condensate leads to a destabilization of shorter
wavelength modes within the system via parametric resonance. We focus on an
idealized setup in which the two condensates have identical properties and
identical background densities. Describing the system by the coupled
Gross-Pitaevskii equations (GPE), we use the machinery of Floquet theory to
perform a linear stability analysis, calculating the wavenumber associated with
the first instability band for a variety of experimental parameters. However,
we demonstrate that, by tuning the frequency of the time-varying coupling, it
may be possible to push the first instability band outside the validity of the
GPE, where dissipative effects are expected to damp any instabilities. This
provides a viable range of experimental parameters to perform analog
experiments of false vacuum decay.Comment: v1: 30 pages + appendices, 9 figures, to be submitted to JHEP; v2:
Matches published version. Minor revisions, results unchange
|
Towards the cold atom analog false vacuum
|
towards the cold atom analog false vacuum
|
analog condensed exciting opportunity simulate universe experiments. proposal analog condensed simulate relativistic false vacuum. ultra cold condensates field. condensates relativistic possessing false minima. false tunnelling. realized answer perturbative phenomena universe cosmology. illustrate obstruction invoked create false condensate destabilization shorter parametric resonance. idealized setup condensates densities. describing gross pitaevskii machinery floquet calculating wavenumber instability parameters. tuning push instability validity dissipative damp instabilities. viable analog false pages appendices submitted jhep matches version. minor revisions unchange
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141533451
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10.1007/JHEP07(2018)022
|
We perform a systematic analysis of flow-like solutions in theories of
Einstein gravity coupled to multiple scalar fields, which arise as holographic
RG flows as well as in the context of cosmological solutions driven by scalars.
We use the first order formalism and the superpotential formulation to classify
solutions close to generic extrema of the scalar potential, and close to
"bounces," where the flow is inverted in some or all directions and the
superpotential becomes multi-valued. Although the superpotential formulation
contains a large redundancy, we show how this can be completely lift by
suitable regularity conditions. We place the first order formalism in the
context of Hamilton-Jacobi theory, where we discuss the possibility of
non-gradient flows and their connection to non-separable solutions of the
Hamilton-Jacobi equation. We argue that non-gradient flows may be useful in the
presence of global symmetries in the scalar sector.Comment: 57 pages, 8 figure
|
On multi-field flows in gravity and holography
|
on multi-field flows in gravity and holography
|
einstein arise holographic flows cosmological scalars. formalism superpotential formulation classify generic extrema bounces inverted directions superpotential valued. superpotential formulation redundancy lift regularity conditions. formalism hamilton jacobi flows connection separable hamilton jacobi equation. argue flows symmetries pages
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146473458
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10.1007/JHEP07(2018)024
|
Future electron-proton collider proposals like the LHeC or the FCC-eh can
supply 1/ab of collisions with a center-of-mass energy in the TeV range, while
maintaining a clean experimental environment more commonly associated with
lepton colliders. We point out that this makes electron-proton colliders
ideally suited to probe BSM signatures with final states that look like
"hadronic noise" in the high-energy, pile-up-rich environment of hadron
colliders. We focus on the generic vector boson fusion production mechanism,
which is available for all BSM particles with electroweak charges at mass
scales far above the reach of most lepton colliders. This is in contrast to
previous BSM studies at these machines, which focused on BSM processes with
large production rates from the asymmetric initial state. We propose to exploit
the unique experimental environment in the search for long-lived particle
signals arising from Higgsinos or exotic Higgs decays. At electron-proton
colliders, the soft decay products of long-lived Higgsinos can be explicitly
reconstructed ("displaced single pion"), and very short lifetimes can be
probed. We find that electron-proton colliders can explore significant regions
of BSM parameter space inaccessible to other collider searches, with important
implications for the design of such machines.Comment: 16 pages, 11 figure
|
New Physics Opportunities for Long-Lived Particles at Electron-Proton
Colliders
|
new physics opportunities for long-lived particles at electron-proton colliders
|
proton collider proposals lhec supply collisions maintaining clean commonly lepton colliders. proton colliders ideally suited signatures look hadronic pile hadron colliders. generic boson fusion electroweak charges lepton colliders. machines focused asymmetric state. propose exploit lived arising higgsinos exotic decays. proton colliders lived higgsinos explicitly reconstructed displaced pion lifetimes probed. proton colliders explore inaccessible collider searches pages
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non_dup
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[] |
129360936
|
10.1007/JHEP07(2018)032
|
This paper presents a measurement of the underlying event activity in
proton-proton collisions at a center-of-mass energy of 13 TeV, performed using
inclusive Z boson production events collected with the CMS experiment at the
LHC. The analyzed data correspond to an integrated luminosity of 2.1 fb$^{-1}$.
The underlying event activity is quantified in terms of the charged particle
multiplicity, as well as of the scalar sum of the charged particles' transverse
momenta in different topological regions defined with respect to the Z boson
direction. The distributions are unfolded to the stable particle level and
compared with predictions from various Monte Carlo event generators, as well as
with similar CDF and CMS measurements at center-of-mass energies of 1.96 and 7
TeV respectively.Comment: Replaced with the published version. Added the journal reference and
the DOI. All the figures and tables can be found at
http://cms-results.web.cern.ch/cms-results/public-results/publications/FSQ-16-008/
(CMS Public Pages
|
Measurement of the underlying event activity in inclusive Z boson
production in proton-proton collisions at $\sqrt{s} = $ 13 TeV
|
measurement of the underlying event activity in inclusive z boson production in proton-proton collisions at $\sqrt{s} = $ 13 tev
|
presents proton proton collisions inclusive boson lhc. luminosity quantified multiplicity momenta topological boson direction. unfolded monte carlo generators replaced version. doi. tables publications pages
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[] |
83857478
|
10.1007/JHEP07(2018)035
|
Using the background-field method we demonstrate the
Becchi-Rouet-Stora-Tyutin (BRST) structure of counterterms in a broad class of
gauge theories. Put simply, we show that gauge invariance is preserved by
renormalization in local gauge field theories whenever they admit a sensible
background-field formulation and anomaly-free path integral measure. This class
encompasses Yang-Mills theories (with possibly Abelian subgroups) and
relativistic gravity, including both renormalizable and non-renormalizable
(effective) theories. Our results also hold for non-relativistic models such as
Yang-Mills theories with anisotropic scaling or Horava gravity. They strengthen
and generalize the existing results in the literature concerning the
renormalization of gauge systems. Locality of the BRST construction is
emphasized throughout the derivation. We illustrate our general approach with
several explicit examples.Comment: 45 pages, no figures; references added, changes in the Introduction
and Conclusion
|
Renormalization of gauge theories in the background-field approach
|
renormalization of gauge theories in the background-field approach
|
becchi rouet stora tyutin brst counterterms broad theories. invariance preserved renormalization whenever admit sensible formulation anomaly measure. encompasses mills possibly abelian subgroups relativistic renormalizable renormalizable theories. hold relativistic mills anisotropic horava gravity. strengthen generalize concerning renormalization systems. locality brst emphasized derivation. illustrate pages
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non_dup
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[] |
129359203
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10.1007/JHEP07(2018)051
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We use the thermodynamics of anti-de Sitter gravity to derive sparseness
bounds on the spectrum of local operators in holographic conformal field
theories. The simplest such bound is $\rho(\Delta) \lesssim
\exp\left(\frac{2\pi\Delta}{d-1}\right)$ for CFT$_d$. Unlike the case of $d=2$,
this bound is strong enough to rule out weakly coupled holographic theories. We
generalize the bound to include spins $J_i$ and $U(1)$ charge $Q$, obtaining
bounds on $\rho(\Delta, J_i, Q)$ in $d=3$ through $6$. All bounds are saturated
by black holes at the Hawking-Page transition and vanish beyond the
corresponding BPS bound.Comment: 21 pages, 9 figures, 2 appendice
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Sparseness bounds on local operators in holographic $CFT_d$
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sparseness bounds on local operators in holographic $cft_d$
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thermodynamics sitter derive sparseness bounds holographic conformal theories. simplest delta lesssim frac delta unlike weakly holographic theories. generalize spins obtaining bounds delta bounds saturated holes hawking vanish pages appendice
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non_dup
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129356647
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10.1007/JHEP07(2018)055
|
We present the full NLO SUSY-QCD corrections to the pair production of
neutralinos and charginos at the LHC in association with a jet and their
matching to parton-shower programs in the framework of the POWHEG-BOX package.
The code we have developed provides a SUSY Les Houches Accord interface for
setting electroweak and supersymmetric input parameters. Decays of the
neutralinos and charginos and parton-shower effects can be simulated with
multi-purpose programs such as PYTHIA. The capabilities of the code are
illustrated by phenomenological results for a parameter point in the framework
of pMSSM10, compatible with present experimental limits on supersymmetry. We
find that NLO-QCD corrections as well as parton-shower effects are of primary
importance for the appropriate description of jet distributions.Comment: 19 pages, 9 figures. V2: minor corrections, matches the published
versio
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Precise predictions for electroweakino-pair production in association
with a jet at the LHC
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precise predictions for electroweakino-pair production in association with a jet at the lhc
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susy neutralinos charginos matching parton shower programs powheg package. susy houches accord electroweak supersymmetric parameters. decays neutralinos charginos parton shower programs pythia. capabilities illustrated phenomenological pmssm compatible supersymmetry. parton shower pages figures. minor matches versio
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non_dup
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146472927
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10.1007/JHEP07(2018)061
|
The Higgs branch of minimally supersymmetric five dimensional SQCD theories
increases in a significant way at the UV fixed point when the inverse gauge
coupling is tuned to zero. It has been a long standing problem to figure out
how, and to find an exact description of this Higgs branch. This paper solves
this problem in an elegant way by proposing that the Coulomb branches of three
dimensional ${\cal N}=4$ supersymmetric quiver gauge theories, named
"Exceptional Sequences", provide the solution to the problem. Thus, once again,
3d ${\cal N}=4$ Coulomb branches prove to be useful tools in solving problems
in higher dimensions. Gauge invariant operators on the 5d side consist of
classical objects such as mesons, baryons and gaugino bilinears, and non
perturbative objects such as instanton operators with or without baryon number.
On the 3d side we have classical objects such as Casimir invariants and non
perturbative objects such as monopole operators, bare or dressed. The duality
map works in a very interesting way.Comment: 37 pages, 3 figure
|
3d Coulomb branch and 5d Higgs branch at infinite coupling
|
3d coulomb branch and 5d higgs branch at infinite coupling
|
branch minimally supersymmetric sqcd tuned zero. standing branch. solves elegant proposing coulomb branches supersymmetric quiver named exceptional problem. coulomb branches solving dimensions. consist mesons baryons gaugino bilinears perturbative instanton baryon number. casimir invariants perturbative monopole bare dressed. duality pages
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non_dup
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162910917
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10.1007/JHEP07(2018)062
|
If the electroweak phase transition (EWPT) is of strongly first order due to higher dimensional operators, the scale of new physics generating them is at the TeV scale or below. In this case the effective-field theory (EFT) neglecting operators of dimension higher than six may overlook terms that are relevant for the EWPT analysis. In this article we study the EWPT in the EFT to dimension eight. We estimate the reach of the future gravitational wave observatory LISA for probing the region in which the EWPT is strongly first order and compare it with the capabilities of the Higgs measurements via double-Higgs production at current and future colliders. We also match different UV models to the previously mentioned dimension-eight EFT and demonstrate that, from the top-down point of view, the double-Higgs production is not the best signal to explore these scenarios
|
Signals of the electroweak phase transition at colliders and gravitational wave observatories.
|
signals of the electroweak phase transition at colliders and gravitational wave observatories.
|
electroweak ewpt generating below. neglecting overlook ewpt analysis. ewpt eight. gravitational observatory lisa probing ewpt capabilities colliders. match eight explore scenarios
|
non_dup
|
[] |
162910918
|
10.1007/JHEP07(2018)068
|
A non-trivial consequence of the super-correlator/super-amplitude duality is that the integrand of the four-point correlation function of stress-tensor multiplets in planar N = 4 super Yang-Mills contains a certain combination of n-point amplitude integrands for any n. This combination is the sum of products of all helicity super-amplitudes with their corresponding helicity conjugates. The four-point correlator itself is described by a single scalar function whose loop level integrands possess a hidden permutation symmetry facilitating its computation up to ten loops. We discover that assuming Yangian symmetry and an appropriate basis of planar dual conformal integrands it is possible to disentangle the contributions from the individual amplitudes from this combination. We test this up to seven points and up to two loops. This suggests that any scattering amplitude for any n, with any helicity structure and at any loop order may be extractable from the four-point correlator
|
Multi-particle amplitudes from the four-point correlator in planar N = 4 SYM.
|
multi-particle amplitudes from the four-point correlator in planar n = 4 sym.
|
trivial super correlator super duality integrand multiplets planar super mills integrands helicity super amplitudes helicity conjugates. correlator integrands possess hidden permutation facilitating loops. discover yangian planar conformal integrands disentangle amplitudes combination. seven loops. helicity extractable correlator
|
non_dup
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[] |
141534582
|
10.1007/JHEP07(2018)070
|
In arXiv:1705.10172 it was proposed that string theory replaces Schwarzschild
black holes with horizonless thin shells with an AdS interior. In this paper we
extend the analysis to slowly rotating black holes, solving the
Israel-Lanczos-Sen junction conditions for a rotating shell composed of stringy
matter to determine the metric. Outside of the shell we find a vacuum solution
that differs from Kerr with a 32% larger quadrupole moment. We discuss the
observational consequences and explore the possibility to distinguish between a
black shell and a black hole. Promising methods include imaging of the black
hole at the center of the Milky Way using the Event Horizon Telescope,
precision measurements of stars in close orbits around the central black hole,
and future observations of colliding super massive black holes using the space
based gravitational wave observatory LISA.Comment: Published versio
|
Observational signatures from horizonless black shells imitating
rotating black holes
|
observational signatures from horizonless black shells imitating rotating black holes
|
replaces schwarzschild holes horizonless shells interior. extend slowly rotating holes solving israel lanczos junction rotating composed stringy metric. differs kerr quadrupole moment. observational consequences explore distinguish hole. promising milky horizon telescope precision orbits colliding super massive holes gravitational observatory versio
|
non_dup
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[] |
129349794
|
10.1007/JHEP07(2018)073
|
We study the supersymmetric partition function on $S^1 \times L(r, 1)$, or
the lens space index of four-dimensional $\mathcal{N}=2$ superconformal field
theories and their connection to two-dimensional chiral algebras. We primarily
focus on free theories as well as Argyres-Douglas theories of type $(A_1, A_k)$
and $(A_1, D_k)$. We observe that in specific limits, the lens space index is
reproduced in terms of the (refined) character of an appropriately twisted
module of the associated two-dimensional chiral algebra or a generalized vertex
operator algebra. The particular twisted module is determined by the choice of
discrete holonomies for the flavor symmetry in four-dimensions.Comment: 47 pages; v2: minor corrections, published versio
|
Four-dimensional Lens Space Index from Two-dimensional Chiral Algebra
|
four-dimensional lens space index from two-dimensional chiral algebra
|
supersymmetric partition lens mathcal superconformal connection chiral algebras. primarily argyres douglas lens reproduced refined character appropriately twisted module chiral algebra. twisted module holonomies flavor pages minor versio
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non_dup
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162910743
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10.1007/JHEP07(2018)074
|
We use 4d ambitwistor string theory to derive new worldsheet formulae for tree-level conformal supergravity amplitudes supported on refined scattering equations. Unlike the worldsheet formulae for super-Yang-Mills or supergravity, the scattering equations for conformal supergravity are not in general refined by MHV degree. Nevertheless, we obtain a concise worldsheet formula for any number of scalars and gravitons which we lift to a manifestly supersymmetric formula using four types of vertex operators. The theory also contains states with non-plane wave boundary conditions and we show that the corresponding amplitudes can be obtained from plane-wave amplitudes by applying momentum derivatives. Such derivatives are subtle to define since the formulae are intrinsically four-dimensional and on-shell, so we develop a method for computing momentum derivatives of spinor variables
|
New worldsheet formulae for conformal supergravity amplitudes.\ud
|
new worldsheet formulae for conformal supergravity amplitudes.\ud
|
ambitwistor derive worldsheet formulae conformal supergravity amplitudes refined equations. unlike worldsheet formulae super mills supergravity conformal supergravity refined degree. nevertheless concise worldsheet scalars gravitons lift manifestly supersymmetric operators. amplitudes amplitudes derivatives. derivatives subtle formulae intrinsically derivatives spinor
|
non_dup
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[] |
84332070
|
10.1007/JHEP07(2018)079
|
Light sterile neutrinos can be probed in a number of ways, including
electroweak decays, cosmology and neutrino oscillation experiments. At
long-baseline experiments, the neutral-current data is directly sensitive to
the presence of light sterile neutrinos: once the active neutrinos have
oscillated into a sterile state, a depletion in the neutral-current data sample
is expected since they do not interact with the $Z$ boson. This channel offers
a direct avenue to probe the mixing between a sterile neutrino and the tau
neutrino, which remains largely unconstrained by current data. In this work, we
study the potential of the DUNE experiment to constrain the mixing angle which
parametrizes this mixing, $\theta_{34}$, through the observation of
neutral-current events at the far detector. We find that DUNE will be able to
improve significantly over current constraints thanks to its large statistics
and excellent discrimination between neutral- and charged-current events.Comment: 18 pages, 5 figure
|
DUNE sensitivities to the mixing between sterile and tau neutrinos
|
dune sensitivities to the mixing between sterile and tau neutrinos
|
sterile neutrinos probed ways electroweak decays cosmology oscillation experiments. neutral sterile neutrinos neutrinos oscillated sterile depletion neutral interact boson. offers avenue sterile largely unconstrained data. dune constrain parametrizes theta neutral detector. dune thanks excellent discrimination neutral pages
|
non_dup
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[] |
129360201
|
10.1007/JHEP07(2018)085
|
Caron-Huot has recently given an interesting formula that determines OPE data
in a conformal field theory in terms of a weighted integral of the four-point
function over a Lorentzian region of cross-ratio space. We give a new
derivation of this formula based on Wick rotation in spacetime rather than
cross-ratio space. The derivation is simple in two dimensions but more involved
in higher dimensions. We also derive a Lorentzian inversion formula in one
dimension that sheds light on previous observations about the chaos regime in
the SYK model.Comment: 26 pages plus appendice
|
A spacetime derivation of the Lorentzian OPE inversion formula
|
a spacetime derivation of the lorentzian ope inversion formula
|
caron huot determines conformal weighted lorentzian space. derivation wick spacetime space. derivation dimensions. derive lorentzian inversion sheds chaos pages appendice
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non_dup
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[] |
93959728
|
10.1007/JHEP07(2018)092
|
The QCD axion is one of the most compelling solutions of the strong CP
problem. There are major current efforts into searching for an ultralight,
invisible axion, which is believed to be the only phenomenologically viable
realization of the QCD axion. Visible axions with decay constants at or below
the electroweak scale are believed to have been long excluded by laboratory
searches. Considering the significance of the axion solution of the strong CP
problem, we revisit experimental constraints on QCD axions in the O(10 MeV)
mass window. In particular, we find a variant axion model that remains
compatible with existing constraints. This model predicts new states at the GeV
scale coupled hadronically, and a variety of low-energy axion signatures, such
as rare meson decays, nuclear de-excitations via axion emission, production in
e+e- annihilation and fixed target experiments. This reopens the possibility of
solving the strong CP problem at the GeV scale.Comment: 59 pages, 2 figures, 2 tables; matches published versio
|
A viable QCD axion in the MeV mass range
|
a viable qcd axion in the mev mass range
|
axion compelling problem. efforts searching ultralight invisible axion believed phenomenologically viable realization axion. visible axions electroweak believed excluded searches. axion revisit axions window. variant axion compatible constraints. predicts hadronically axion signatures rare meson decays excitations axion annihilation experiments. reopens solving pages tables matches versio
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non_dup
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