pinecone/core-2020-05-10-deduplication huggingface dataset:
Back reaction, emission spectrum and entropy spectroscopy

Recently, an interesting work, which reformulates the tunneling framework to
directly produce the Hawking emission spectrum and entropy spectroscopy in the
tunneling picture, has been received a broad attention. However, during the
emission process, most related observations have not incorporated the effects
of back reaction on the background spacetime, whose derivations are therefore
not the desiring results for the real physical process. With this point as a
central motivation, in this paper we suitably adapt the \emph{reformulated}
tunneling framework so that it can well accommodate the effects of back
reaction to produce the Hawking emission spectrum and entropy spectroscopy.
Consequently, we interestingly find that, when back reaction is considered, the
Parikh-Wilczek's outstanding observations that, an isolated radiating black
hole has an unitary-evolving emission spectrum that is \emph{not} precisely
thermal, but is related to the change of the Bekenstein-Hawking entropy, can
also be reproduced in the reformulated tunneling framework, meanwhile the
entropy spectrum has the same form as that without inclusion of back reaction,
which demonstrates the entropy quantum is \emph{independent} of the effects of
back reaction. As our final analysis, we concentrate on the issues of the black
hole information, but \emph{unfortunately} find that, even including the
effects of back reaction and higher-order quantum corrections, such tunneling
formalism can still not provide a mechanism for preserving the black hole
information.Comment: 16 pages, no figure, use JHEP3.cls. to be published in JHE
Low Scale Flavor Gauge Symmetries

We study the possibility of gauging the Standard Model flavor group. Anomaly
cancellation leads to the addition of fermions whose mass is inversely
proportional to the known fermion masses. In this case all flavor violating
effects turn out to be controlled roughly by the Standard Model Yukawa,
suppressing transitions for the light generations. Due to the inverted
hierarchy the scale of new gauge flavor bosons could be as low as the
electroweak scale without violating any existing bound but accessible at the
Tevatron and the LHC. The mechanism of flavor protection potentially provides
an alternative to Minimal Flavor Violation, with flavor violating effects
suppressed by hierarchy of scales rather than couplings.Comment: 24 pages + appendices; v2) Refs. added and numerical examples
  improved. Results unchanged; v3) small typos in appendix B correcte
Interaction between M2-branes and Bulk Form Fields

We construct the interaction terms between the world-volume fields of
multiple M2-branes and the 3- and 6-form fields in the context of ABJM theory
with U($N$)$\times$U($N$) gauge symmetry. A consistency check is made in the
simplest case of a single M2-brane, i.e, our construction matches the known
effective action of M2-brane coupled to antisymmetric 3-form field. We show
that when dimensionally reduced, our couplings coincide with the effective
action of D2-branes coupled to R-R 3- and 5-form fields in type IIA string
theory. We also comment on the relation between a coupling with a specific
6-form field configuration and the supersymmetry preserving mass deformation in
ABJM theory.Comment: 30 pages, version to appear in JHE
Generic master equations for quasi-normal frequencies

Generic master equations governing the highly-damped quasi-normal frequencies
[QNFs] of one-horizon, two-horizon, and even three-horizon spacetimes can be
obtained through either semi-analytic or monodromy techniques. While many
technical details differ, both between the semi-analytic and monodromy
approaches, and quite often among various authors seeking to apply the
monodromy technique, there is nevertheless widespread agreement regarding the
the general form of the QNF master equations. Within this class of generic
master equations we can establish some rather general results, relating the
existence of "families" of QNFs of the form omega_{a,n} = (offset)_a + i n
(gap) to the question of whether or not certain ratios of parameters are
rational or irrational.Comment: 23 pages; V2: Minor additions, typos fixed. Matches published versio
Phenomenological Aspects of Dirichlet Higgs Model from Extra-Dimension

We study a simple five-dimensional extension of the Standard Model,
compactified on a flat line segment in which there propagate Higgs and gauge
bosons of the Standard Model. We impose a Dirichlet boundary condition on the
Higgs field to realize its vacuum expectation value. Since a flat
Nambu-Goldstone zero-mode of the bulk Higgs is eliminated by the Dirichlet
boundary condition, a superposition of the Higgs Kaluza-Klein modes play the
role of the Nambu-Goldstone boson except at the boundaries. We discuss
phenomenology of our model at the LHC, namely the top Yukawa deviation and the
production and decay of the physical Higgs field, as well as the constraints
from the electroweak precision measurements.Comment: 24 pages, 8 figures, title changed, phenomenological consequences
  substantially modifie
All the timelike supersymmetric solutions of all ungauged d=4
  supergravities

We determine the form of all timelike supersymmetric solutions of all N
greater or equal than 2, d=4 ungauged supergravities, for N less or equal than
4 coupled to vector supermultiplets, using the $Usp(n+1,n+1)-symmetric
formulation of Andrianopoli, D'Auria and Ferrara and the spinor-bilinears
method, while preserving the global symmetries of the theories all the way. As
previously conjectured in the literature, the supersymmetric solutions are
always associated to a truncation to an N=2 theory that may include
hypermultiplets, although fields which are eliminated in the truncations can
have non-trivial values, as is required by the preservation of the global
symmetry of the theories. The solutions are determined by a number of
independent functions, harmonic in transverse space, which is twice the number
of vector fields of the theory (n+1). The transverse space is flat if an only
if the would-be hyperscalars of the associated N=2 truncation are trivial.Comment: v3: Some changes in the introduction. Version to be published in JHE
Minimal Flavour Violation for Leptoquarks

Scalar leptoquarks, with baryon and lepton number conserving interactions,
could have TeV scale masses, and be produced at colliders or contribute to a
wide variety of rare decays. In pursuit of some insight as to the most
sensitive search channels, We assume that the leptoquark-lepton-quark coupling
can be constructed from the known mass matrices. We estimate the rates for
selected rare processes in three cases: leptoquarks carrying lepton and quark
flavour, leptoquarks with quark flavour only, and unflavoured leptoquarks. We
find that leptoquark decay to top quarks is an interesting search channel.Comment: 17 pages, 2 figures, minor changes and references adde
Theoretical Uncertainties in Electroweak Boson Production Cross Sections
  at 7, 10, and 14 TeV at the LHC

We present an updated study of the systematic errors in the measurements of
the electroweak boson cross-sections at the LHC for various experimental cuts
for a center of mass energy of 7, 10 and 14 TeV. The size of both electroweak
and NNLO QCD contributions are estimated, together with the systematic error
from the parton distributions. The effects of new versions of the MSTW, CTEQ,
and NNPDF PDFs are considered.Comment: PDFLatex with JHEP3.cls. 22 pages, 43 figures. Version 2 adds the
  CT10W PDF set to analysis and updates the final systematic error table and
  conclusions, plus several citations and minor wording changes. Version 3 adds
  some references on electroweak and mixed QED/QCD corrections. Version 4 adds
  more references and acknowledgement
The flavor puzzle in multi-Higgs models

We reconsider the flavor problem in the models with two Higgs doublets. By
studying two generation toy models, we look for flavor basis independent
constraints on Yukawa couplings that will give us the mass hierarchy while
keeping all Yukawa couplings of the same order. We then generalize our findings
to the full three generation Standard Model. We find that we need two
constraints on the Yukawa couplings to generate the observed mass hierarchy,
and a slight tuning of Yukawa couplings of order 10%, much less than the
Standard Model. We briefly study how these constraints can be realized, and
show how flavor changing currents are under control for $K-\bar{K}$ mixing in
the near-decoupling limit.Comment: 26 pages, typos are corrected, references are added, the final
  versio
Dual Superconformal Symmetry of N=6 Chern-Simons Theory

We demonstrate that the four and six-point tree-level amplitudes of N=6
superconformal Chern-Simons theory (ABJM) enjoy OSp(6|4) dual superconformal
symmetry if one enlarges the dual superspace to include three additional
Grassmann-even coordinates which correspond to an abelian isometry of CP3. The
inclusion of these coordinates enables us to match the nontrivial dual
superconformal generators with level-one Yangian generators when acting on
on-shell amplitudes. We also discuss some implications of dual conformal
symmetry for loop-level amplitudes.Comment: 32 pages; v3: minor changes, published in JHE
The QCD equation of state with dynamical quarks

The present paper concludes our investigation on the QCD equation of state
with 2+1 staggered flavors and one-link stout improvement. We extend our
previous study [JHEP 0601:089 (2006)] by choosing even finer lattices. Lattices
with $N_t=6,8$ and 10 are used, and the continuum limit is approached by
checking the results at $N_t=12$. A Symanzik improved gauge and a stout-link
improved staggered fermion action is utilized. We use physical quark masses,
that is, for the lightest staggered pions and kaons we fix the $m_\pi/f_K$ and
$m_K/f_K$ ratios to their experimental values. The pressure, the interaction
measure, the energy and entropy density and the speed of sound are presented as
functions of the temperature in the range $100 ...1000 \textmd{MeV}$. We give
estimates for the pion mass dependence and for the contribution of the charm
quark. We compare our data to the equation of state obtained by the "hotQCD"
collaboration.Comment: Minor changes: Figure 1 added; Figure 15, Figure 17 and Table 5
  changed. Accepted for publication in JHE
Very special relativity as relativity of dark matter: the Elko
  connection

In the very special relativity (VSR) proposal by Cohen and Glashow, it was
pointed out that invariance under HOM(2) is both necessary and sufficient to
explain the null result of the Michelson-Morely experiment. It is the quantum
field theoretic demand of locality, or the requirement of P, T, CP, or CT
invariance, that makes invariance under the Lorentz group a necessity.
Originally it was conjectured that VSR operates at the Planck scale; we propose
that the natural arena for VSR is at energies similar to the standard model,
but in the dark sector. To this end we provide an ab initio spinor
representation invariant under the SIM(2) avatar of VSR and construct a mass
dimension one fermionic quantum field of spin one half. This field turns out to
be a very close sibling of Elko and it exhibits the same striking property of
intrinsic darkness with respect to the standard model fields. In the new
construct, the tension between Elko and Lorentz symmetries is fully resolved.
We thus entertain the possibility that the symmetries underlying the standard
model matter and gauge fields are those of Lorentz, while the event space
underlying the dark matter and the dark gauge fields supports the algebraic
structure underlying VSR.Comment: 19 pages. Section 5 is new. Published version (modulo a footnote, and
  a corrected typo
Quark-antiquark potential in AdS at one loop

We derive an exact analytical expression for the one-loop partition function
of a string in AdS_5xS^5 background with world-surface ending on two
anti-parallel lines. All quantum fluctuations are shown to be governed by
integrable, single-gap Lame' operators. The first strong coupling correction to
the quark-antiquark potential, as defined in N=4 SYM, is derived as the sum of
known mathematical constants and a one-dimensional integral representation. Its
full numerical value can be given with arbitrary precision and confirms a
previous result.Comment: 16 pages. Typos corrected, minor change
Holography and $AdS_4$ self-gravitating dyons

We present a self-gravitating dyon solution of the Einstein-Yang-Mills-Higgs
equations of motion in asymptotically AdS space. The back reaction of gauge and
Higgs fields on the space-time geometry leads to the metric of an
asymptotically AdS black hole. Using the gauge/gravity correspondence we
analyze relevant properties of the finite temperature quantum field theory
defined on the boundary. In particular we identify an order operator,
characterize a phase transition of the dual theory on the border and also
compute the expectation value of the finite temperature Wilson loop.Comment: 25 pages, 9 figures. Revised version to appear in JHE
Classical theta constants vs. lattice theta series, and super string
  partition functions

Recently, various possible expressions for the vacuum-to-vacuum superstring
amplitudes has been proposed at genus $g=3,4,5$. To compare the different
proposals, here we will present a careful analysis of the comparison between
the two main technical tools adopted to realize the proposals: the classical
theta constants and the lattice theta series. We compute the relevant Fourier
coefficients in order to relate the two spaces. We will prove the equivalence
up to genus 4. In genus five we will show that the solutions are equivalent
modulo the Schottky form and coincide if we impose the vanishing of the
cosmological constant.Comment: 21 page
U-dual fluxes and Generalized Geometry

We perform a systematic analysis of generic string flux compactifications,
making use of Exceptional Generalized Geometry (EGG) as an organizing
principle. In particular, we establish the precise map between fluxes, gaugings
of maximal 4d supergravity and EGG, identifying the complete set of gaugings
that admit an uplift to 10d heterotic or type IIB supegravity backgrounds. Our
results reveal a rich structure, involving new deformations of 10d supergravity
backgrounds, such as the RR counterparts of the $\beta$-deformation. These new
deformations are expected to provide the natural extension of the
$\beta$-deformation to full-fledged F-theory backgrounds. Our analysis also
provides some clues on the 10d origin of some of the particularly less
understood gaugings of 4d supergravity. Finally, we derive the explicit
expression for the effective superpotential in arbitrary N = 1 heterotic or
type IIB orientifold compactifications, for all the allowed fluxes.Comment: 58 pages, 6 table
Fermion correlators in non-abelian holographic superconductors

We consider fermion correlators in non-abelian holographic superconductors.
The spectral function of the fermions exhibits several interesting features
such as support in displaced Dirac cones and an asymmetric distribution of
normal modes. These features are compared to similar ones observed in angle
resolved photoemission experiments on high T_c superconductors. Along the way
we elucidate some properties of p-wave superconductors in AdS_4 and discuss the
construction of SO(4) superconductors.Comment: 49 pages, 11 figure
On the Tensionless Limit of String theory, Off - Shell Higher Spin
  Interaction Vertices and BCFW Recursion Relations

We construct an off-shell extension of cubic interaction vertices between
massless bosonic Higher Spin fields on a flat background which can be obtained
from perturbative bosonic string theory. We demonstrate how to construct higher
quartic interaction vertices using a simple particular example. We examine
whether BCFW recursion relations for interacting Higher Spin theories are
applicable. We argue that for several interesting examples such relations
should exist, but consistency of the theories might require that we supplement
Higher Spin field theories with extended and possibly non-local objects.Comment: 34 pages; v2 fixed typos, added acknowledgments and references,
  several explanations and corrections in section 6, conclusions unchanged; v3
  35 pages, references added, typos fixed, version accepted for publication by
  JHE
One-loop Yukawa Couplings in Local Models

We calculate the one-loop Yukawa couplings and threshold corrections for
supersymmetric local models of branes at singularities in type IIB string
theory. We compute the corrections coming both from wavefunction and vertex
renormalisation. The former comes in the IR from conventional field theory
running and in the UV from threshold corrections that cause it to run from the
winding scale associated to the full Calabi-Yau volume. The vertex correction
is naively absent as it appears to correspond to superpotential
renormalisation. However, we find that while the Wilsonian superpotential is
not renormalised there is a physical vertex correction in the 1PI action
associated to light particle loops.Comment: 37 pages, 3 figure
A Note on G-Fluxes for F-theory Model Building

We propose a description of G-fluxes that induce chirality in 4-dimensional
F-theory GUT spectra that is intrinsic to F-theory and does not rely on
Heterotic/F-theory duality. Using this, we describe how to globally extend
fluxes that have been constructed in a semi-local setting and obtain an
F-theoretic formula for computing the chiral spectrum that they induce.
Chirality computations agree with those from the semi-local Higgs bundle
analysis for matter fields that are charged under the GUT-group, and hence with
the standard Heterotic formulae where applicable. Finally, the relation of
G-fluxes to SU(5)_{perp} bundles on the F-theory 4-fold is discussed and used
to motivate a quantization rule that is consistent both with the Higgs bundle
one as well as the Heterotic one when a Heterotic dual exists.Comment: 41 pages + 2 appendices; v2 references added, typo in (2.14)
  correcte
Z-mediated charge and CP asymmetries and FCNCs in $B_{d,s}$ processes

We show model-independently that the negative like-sign charge asymmetry
$(-A^b_{s\ell})$ is less than $ 3.16\times 10^{-3}$ when the constraints from
the $B_q-\bar B_q$ mixings and the time-dependent CP asymmetries (CPAs) for
$B_q\to J/\Psi M_q$ with $M_q=K,\phi$ and $q=d,s$ are taken into account.
Although the result is smaller than the measured value by the D{\O}
Collaboration at Fermilab, there is still plenty of room to have new physics,
which is sensitive to new CP violating effects, as the standard model (SM)
prediction is $(2.3_{-0.5}^{+0.6})\times 10^{-4}$. To illustrate the potential
large $|A^{b}_{s\ell}|$, we show the influence of new $SU(2)_L$ singlet exotic
quarks in the vector-like quark model, where the $Z$-mediated flavor changing
neutral currents (FCNCs) are generated at tree level. In particular, we
demonstrate that (a) the like-sign charge asymmetry could be enhanced by a
factor of two in magnitude; (b) the CPA of $\sin2\beta^{J/\Psi \phi}_s$ could
reach to $-15%$; (c) the CPA of $\sin2\beta_{\phi K_S}$ could be higher than
$\sin2\beta_{J/\Psi K_S}$ when $|A^b_{s\ell}|$ is larger than the SM
prediction; and (d) the branching ratio for $B_s\to \mu^+ \mu^-$ could be as
large as $0.6\times 10^{-8}$.Comment: 1+19 pages, 8 figures, typos corrected and references added, version
  to appear in JHE
Bridging flavour violation and leptogenesis in SU(3) family models

We reconsider basic, in the sense of minimal field content, Pati-Salam x
SU(3) family models which make use of the Type I see-saw mechanism to reproduce
the observed mixing and mass spectrum in the neutrino sector. The goal of this
is to achieve the observed baryon asymmetry through the thermal decay of the
lightest right-handed neutrino and at the same time to be consistent with the
expected experimental lepton flavour violation sensitivity. This kind of models
have been previously considered but it was not possible to achieve a
compatibility among all of the ingredients mentioned above. We describe then
how different SU(3) messengers, the heavy fields that decouple and produce the
right form of the Yukawa couplings together with the scalars breaking the SU(3)
symmetry, can lead to different Yukawa couplings. This in turn implies
different consequences for flavour violation couplings and conditions for
realizing the right amount of baryon asymmetry through the decay of the
lightest right-handed neutrino. Also a highlight of the present work is a new
fit of the Yukawa textures traditionally embedded in SU(3) family models.Comment: 26 pages, 5 figures, Some typos correcte
Universal thermal and electrical conductivity from holography

It is known from earlier work of Iqbal, Liu (arXiv:0809.3808) that the
boundary transport coefficients such as electrical conductivity (at vanishing
chemical potential), shear viscosity etc. at low frequency and finite
temperature can be expressed in terms of geometrical quantities evaluated at
the horizon. In the case of electrical conductivity, at zero chemical potential
gauge field fluctuation and metric fluctuation decouples, resulting in a
trivial flow from horizon to boundary. In the presence of chemical potential,
the story becomes complicated due to the fact that gauge field and metric
fluctuation can no longer be decoupled. This results in a nontrivial flow from
horizon to boundary. Though horizon conductivity can be expressed in terms of
geometrical quantities evaluated at the horizon, there exist no such neat
result for electrical conductivity at the boundary. In this paper we propose an
expression for boundary conductivity expressed in terms of geometrical
quantities evaluated at the horizon and thermodynamical quantities. We also
consider the theory at finite cutoff outside the horizon (arXiv:1006.1902) and
give an expression for cutoff dependent electrical conductivity, which
interpolates smoothly between horizon conductivity and boundary conductivity .
Using the results about the electrical conductivity we gain much insight into
the universality of thermal conductivity to viscosity ratio proposed in
arXiv:0912.2719.Comment: An appendix added discussing relation between boundary conductivity
  and universal conductivity of stretched horizon, version to be published in
  JHE
Graviton 1-loop partition function for 3-dimensional massive gravity

The graviton 1-loop partition function in Euclidean topologically massive
gravity (TMG) is calculated using heat kernel techniques. The partition
function does not factorize holomorphically, and at the chiral point it has the
structure expected from a logarithmic conformal field theory. This gives strong
evidence for the proposal that the dual conformal field theory to TMG at the
chiral point is indeed logarithmic. We also generalize our results to new
massive gravity.Comment: 19 pages, v2: major revision, considerably stronger conclusions,
  added comparison with LCFT partition function, confirmation of LCFT
  conjecture, added autho
Electrified plasma in AdS/CFT correspondence

We construct new gravity backgrounds holographic dual to neutral plasma with
U(1) global symmetry in the presence of constant electric field, considering
its full back-reactions to the metric. As the electric field and the induced
current cause a net energy in-flow to the system, the plasma is continually
heated up and the corresponding gravity solution has an expanding horizon.
After proposing a consistent late-time expansion scheme, we present analytic
solutions in the scheme up to next-leading order, and our solutions are new
time-dependent solutions of 5D asymptotic AdS Einstein-Maxwell(-Chern-Simons)
theory. To extract dual CFT stress tensor and U(1) current from the solutions,
we perform a rigorous holographic renormalization of
Einstein-Maxwell-Chern-Simons theory including full back-reactions, which can
in itself be an interesting addition to literatures. As by-products, we obtain
interesting modifications of energy-momentum/current Ward identities due to the
U(1) symmetry and its triangle anomaly.Comment: 27 pages, no figure, v3, minor typos fixed, matches with published
  versio