pinecone/core-2020-05-10-deduplication huggingface dataset:
On The Phase Structure and Thermodynamic Geometry of R-Charged Black
  Holes

We study the phase structure and equilibrium state space geometry of
R-charged black holes in $D = 5$, 4 and 7 and the corresponding rotating $D3$,
$M2$ and $M5$ branes. For various charge configurations of the compact black
holes in the canonical ensemble we demonstrate new liquid-gas like phase
coexistence behaviour culminating in second order critical points. The critical
exponents turn out to be the same as that of four dimensional asymptotically
AdS black holes in Einstein Maxwell theory. We further establish that the
regions of stability for R-charged black holes are, in some cases, more
constrained than is currently believed, due to properties of some of the
response coefficients. The equilibrium state space scalar curvature is
calculated for various charge configurations, both for the case of compact as
well as flat horizons and its asymptotic behaviour with temperature is
established.Comment: 1 + 33 pages, LaTeX, 25 figures. References adde
Particle dynamics near extreme Kerr throat and supersymmetry

The extreme Kerr throat solution is believed to be non-supersymmetric.
However, its isometry group SO(2,1) x U(1) matches precisely the bosonic
subgroup of N=2 superconformal group in one dimension. In this paper we
construct N=2 supersymmetric extension of a massive particle moving near the
horizon of the extreme Kerr black hole. Bosonic conserved charges are related
to Killing vectors in a conventional way. Geometric interpretation of
supersymmetry charges remains a challenge.Comment: V2: 10 pages; discussion in sect. 4 and 5 extended, acknowledgements
  and references adde
On the infrared behaviour of 3d Chern-Simons theories in N=2 superspace

We discuss the problem of infrared divergences in the N=2 superspace approach
to classically marginal three-dimensional Chern-Simons-matter theories.
Considering the specific case of ABJM theory, we describe the origin of such
divergences and offer a prescription to eliminate them by introducing
non-trivial gauge-fixing terms in the action. We also comment on the extension
of our procedure to higher loop order and to general three-dimensional
Chern-Simons-matter models.Comment: 26 pages, 6 figures, JHEP3; v2: minor corrections and references
  added; v3: introduction expanded, presentation of section 3.3.1 improved,
  references added, version to appear in JHE
Neutrino-electron scattering in noncommutative space

Neutral particles can couple with the $U(1)$ gauge field in the adjoint
representation at the tree level if the space-time coordinates are
noncommutative (NC). Considering neutrino-photon coupling in the NC QED
framework, we obtain the differential cross section of neutrino-electron
scattering. Similar to the magnetic moment effect, one of the NC terms is
proportional to $\frac 1 T$, where $T$ is the electron recoil energy.
Therefore, this scattering provides a chance to achieve a stringent bound on
the NC scale in low energy by improving the sensitivity to the smaller electron
recoil energy.Comment: 12 pages, 2 figure
N = 1 SCFTs from Brane Monodromy

We present evidence for a new class of strongly coupled N = 1 superconformal
field theories (SCFTs) motivated by F-theory GUT constructions. These SCFTs
arise from D3-brane probes of tilted seven-branes which undergo monodromy. In
the probe theory, this tilting corresponds to an N = 1 deformation of an N = 2
SCFT by a matrix of field-dependent masses with non-trivial branch cuts in the
eigenvalues. Though these eigenvalues characterize the geometry, we find that
they do not uniquely specify the holomorphic data of the physical theory. We
also comment on some phenomenological aspects of how these theories can couple
to the visible sector. Our construction can be applied to many N = 2 SCFTs,
resulting in a large new class of N = 1 SCFTs.Comment: v3: 40 pages, 1 figure, typos correcte
A General Black String and its Microscopics

Using G2(2) dualities we construct the most general black string solution of
minimal five-dimensional ungauged supergravity. The black string has five
independent parameters, namely, the magnetic one-brane charge, smeared electric
zero-brane charge, boost along the string direction, energy above the BPS
bound, and rotation in the transverse space. In one extremal limit it reduces
to the three parameter supersymmetric string of five-dimensional minimal
supergravity; in another extremal limit it reduces to the three parameter
non-supersymmetric extremal string of five-dimensional minimal supergravity. It
also admits an extremal limit when it has maximal rotation in the
four-dimensional transverse space. The decoupling limit of our general black
string is a BTZ black hole times a two sphere. The macroscopic entropy of the
string is reproduced by the Maldacena-Strominger-Witten CFT in appropriate
ranges of the parameters. When the pressureless condition is imposed, our
string describes the infinite radius limit of the most general class of black
rings of minimal supergravity. We discuss implications our solution has for
extremal and non-extremal black rings of minimal supergravity.Comment: 35 pages; 3 figures; v2 section 4.1.1 rewritten + minor changes + ref
  adde
Effects of heavy modes on vacuum stability in supersymmetric theories

We study the effects induced by heavy fields on the masses of light fields in
supersymmetric theories, under the assumption that the heavy mass scale is much
higher than the supersymmetry breaking scale. We show that the square-masses of
light scalar fields can get two different types of significant corrections when
a heavy multiplet is integrated out. The first is an indirect level-repulsion
effect, which may arise from heavy chiral multiplets and is always negative.
The second is a direct coupling contribution, which may arise from heavy vector
multiplets and can have any sign. We then apply these results to the sGoldstino
mass and study the implications for the vacuum metastability condition. We find
that the correction from heavy chiral multiplets is always negative and tends
to compromise vacuum metastability, whereas the contribution from heavy vector
multiplets is always positive and tends on the contrary to reinforce it. These
two effects are controlled respectively by Yukawa couplings and gauge charges,
which mix one heavy and two light fields respectively in the superpotential and
the Kahler potential. Finally we also comment on similar effects induced in
soft scalar masses when the heavy multiplets couple both to the visible and the
hidden sector.Comment: LaTex, 24 pages, no figures; v2 some comments and references adde
D-branes and matrix factorisations in supersymmetric coset models

Matrix factorisations describe B-type boundary conditions in N=2
supersymmetric Landau-Ginzburg models. At the infrared fixed point, they
correspond to superconformal boundary states. We investigate the relation
between boundary states and matrix factorisations in the Grassmannian
Kazama-Suzuki coset models. For the first non-minimal series, i.e. for the
models of type SU(3)_k/U(2), we identify matrix factorisations for a subset of
the maximally symmetric boundary states. This set provides a basis for the RR
charge lattice, and can be used to generate (presumably all) other boundary
states by tachyon condensation.Comment: 63 pages, 2 figure
Gauge gravity duality for d-wave superconductors: prospects and
  challenges

We write down an action for a charged, massive spin two field in a fixed
Einstein background. Despite some technical problems, we argue that in an
effective field theory framework and in the context of the AdS/CFT
correspondence, this action can be used to study the properties of a superfluid
phase transition with a d-wave order parameter in a dual strongly interacting
field theory. We investigate the phase diagram and the charge conductivity of
the superfluid phase. We also explain how possible couplings between the spin
two field and bulk fermions affect the fermion spectral function.Comment: 42 pages, 6 figure
D-Brane Wess-Zumino Terms and U-Duality

We construct gauge-invariant and U-duality covariant expressions for
Wess-Zumino terms corresponding to general Dp-branes (for any p<D) in arbitrary
2<D<11 dimensions. A distinguishing feature of these Wess-Zumino terms is that
they contain twice as many scalars as the 10-D compactified dimensions, in line
with doubled geometry. We find that for D<10 the charges of the
higher-dimensional branes can all be expressed as products of the 0-brane
charges, which include the D0-brane and the NS-NS 0-brane charges. We give the
general expressions for these charges and show how they determine the
non-trivial conjugacy class to which some of the higher-dimensional D-branes
belong.Comment: 42 pages. Typos corrected, an error in table 6 corrected, comments in
  the conclusions adde
Nonlinear realizations of symmetries and unphysical Goldstone bosons

The embedding of a $p$-brane into higher dimensional spacetime breaks not
only translational symmetries transverse to the worldvolume, but also Lorentz
symmetries. There exist formulations for $p$-brane actions which associate
Goldstone bosons with the generators of the broken Lorentz symmetries. These
Goldstone bosons are unphysical, in that they can be eliminated in favour of
other Goldstone bosons either via their equations of motion or via the
imposition of an inverse Higgs constraint. In this paper, we examine the
inter-relationship between the coset parameterization necessary to implement
the inverse Higgs constraint, the equivalence of the inverse Higgs constraint
to equations of motion, and the ability to find versions of the action with no
explicit dependence on the unphysical Goldstone bosons. This is evidence that
the unphysical Goldstone bosons are gauge degrees of freedom associated with an
enlarged isotropy group. In addition to $p$-brane actions, a number of other
cases, including conformally invariant dilaton actions, are shown to exhibit
the same structure.Comment: 24 pages; references adde
On three-point correlation functions in the gauge/gravity duality

We study the effect of marginal and irrelevant deformations on the
renormalization of operators near a CFT fixed point. New divergences in a given
operator are determined by its OPE with the operator D that generates the
deformation. This provides a scheme to compute the couplings a_DAB between the
operator D and two arbitrary operators O_A and O_B. We exemplify for the case
of N=4 SYM, considering the simplest case of the exact Lagrangian deformation.
In this case the deformed anomalous dimension matrix is determined by the
derivative of the anomalous dimension matrix with respect to the coupling. We
use integrability techniques to compute the one-loop couplings a_LAB between
the Lagrangian and two distinct large operators built with Magnons, in the
SU(2) sector of the theory. Then we consider a_DAA at strong coupling, and show
how to compute it using the gauge/gravity duality, when D is a chiral operator
dual to any supergravity field and O_A is dual to a heavy string state. We
exemplify for the Lagrangian and operators O_A dual to heavy string states,
showing agreement with the prediction derived from the renormalization group
arguments.Comment: 31 pages, 1 figur
Evidence for the classical integrability of the complete AdS(4) x CP(3)
  superstring

We construct a zero-curvature Lax connection in a sub-sector of the
superstring theory on AdS(4) x CP(3) which is not described by the
OSp(6|4)/U(3) x SO(1,3) supercoset sigma-model. In this sub-sector worldsheet
fermions associated to eight broken supersymmetries of the type IIA background
are physical fields. As such, the prescription for the construction of the Lax
connection based on the Z_4-automorphism of the isometry superalgebra OSp(6|4)
does not do the job. So, to construct the Lax connection we have used an
alternative method which nevertheless relies on the isometry of the target
superspace and kappa-symmetry of the Green-Schwarz superstring.Comment: 1+26 pages; v2: minor typos corrected, acknowledgements adde
On measurement of top polarization as a probe of $t \bar t$ production
  mechanisms at the LHC

In this note we demonstrate the use of top polarization in the study of $t
\bar t$ resonances at the LHC, in the possible case where the dynamics implies
a non-zero top polarization. As a probe of top polarization we construct an
asymmetry in the decay-lepton azimuthal angle distribution (corresponding to
the sign of $\cos\phi_\ell$) in the laboratory. The asymmetry is non-vanishing
even for a symmetric collider like the LHC, where a positive $z$ axis is not
uniquely defined. The angular distribution of the leptons has the advantage of
being a faithful top-spin analyzer, unaffected by possible anomalous $tbW$
couplings, to linear order. We study, for purposes of demonstration, the case
of a $Z'$ as might exist in the little Higgs models. We identify kinematic cuts
which ensure that our asymmetry reflects the polarization in sign and
magnitude. We investigate possibilities at the LHC with two energy options:
$\sqrt{s} = 14$ TeV and $\sqrt{s} = 7$ TeV, as well as at the Tevatron. At the
LHC the model predicts net top quark polarization of the order of a few per
cent for $M_{Z'} \simeq 1200 $ GeV, being as high as $10 %$ for a smaller mass
of the $Z'$ of $700$ GeV and for the largest allowed coupling in the model, the
values being higher for the $7$ TeV option. These polarizations translate to a
deviation from the standard-model value of azimuthal asymmetry of up to about
$4%$ ($7%$) for $14$ ($7$) TeV LHC, whereas for the Tevatron, values as high as
$12%$ are attained. For the $14$ TeV LHC with an integrated luminosity of 10
fb$^{-1}$, these numbers translate into a $3 \sigma$ sensitivity over a large
part of the range $500 \lesssim M_{Z'} \lesssim 1500 $ GeV.Comment: 28 page, LaTeX, requires JHEP style file, 12 figures. Typos corrected
  and references adde
Holography of a Composite Inflaton

We study the time evolution of a brane construction that is holographically
dual to a strongly coupled gauge theory that dynamically breaks a global
symmetry through the generation of an effective composite Higgs vev. The D3/D7
system with a background magnetic field or non-trivial gauge coupling (dilaton)
profile displays the symmetry breaking. We study motion of the D7 brane in the
background of the D3 branes. For small field inflation in the field theory the
effective Higgs vev rolls from zero to the true vacuum value. We study what
phenomenological dilaton profile generates the slow rolling needed, hence
learning how the strongly coupled gauge theory's coupling must run. We note
that evolution of our configuration in the holographic direction, representing
the phyiscs of the strong interactions, can provide additional slowing of the
roll time. Inflation seems to be favoured if the coupling changes by only a
small amount or very gently. We speculate on how such a scenario could be
realized away from N=4 gauge theory, for example, in a walking gauge theory.Comment: 13 pages, 12 figures; v2: Added reference
Extension of non-minimal derivative coupling theory and Hawking
  radiation in black-hole spacetime

We study the greybody factor and Hawking radiation with a non-minimal
derivative coupling between the scalar field and the curvature in the
background of the slowly rotating Kerr-Newman black hole.
  Our results show that both the absorption probability and luminosity of
Hawking radiation of the scalar field increase with the coupling.
  Moreover, we also find that for the weak coupling $\eta<\eta_c$, the
absorption probability and luminosity of Hawking radiation decrease when the
black hole's Hawking temperature decreases; while for stronger coupling
$\eta>\eta_c$, the absorption probability and luminosity of Hawking radiation
increase on the contrary when the black hole's Hawking temperature decreases.
This feature is similar to the Hawking radiation in a $d$-dimensional static
spherically-symmetric black hole surrounded by quintessence \cite{chensong}.Comment: 17 pages, 6 figures, 1 table, Title changed, Appendix changed,
  accepted by JHE
Holographic Evolution of Entanglement Entropy

We study the evolution of entanglement entropy in a 2-dimensional
equilibration process that has a holographic description in terms of a Vaidya
geometry. It models a unitary evolution in which the field theory starts in a
pure state, its vacuum, and undergoes a perturbation that brings it far from
equilibrium. The entanglement entropy in this set up provides a measurement of
the quantum entanglement in the system. Using holographic techniques we recover
the same result obtained before from the study of processes triggered by a
sudden change in a parameter of the hamiltonian, known as quantum quenches.
Namely, entanglement in 2-dimensional conformal field theories propagates with
velocity v^2=1. Both in quantum quenches and in the Vaidya model equilibration
is only achieved at the local level. Remarkably, the holographic derivation of
this last fact requires information from behind the apparent horizon generated
in the process of gravitational collapse described by the Vaidya geometry. In
the early stages of the evolution the apparent horizon seems however to play no
relevant role with regard to the entanglement entropy. We speculate on the
possibility of deriving a thermalization time for occupation numbers from our
analysis.Comment: 26 pages, 10 figure
Flavor Mixing in Gauge-Higgs Unification

We discuss flavor mixing and resultant flavor changing neutral current
processes in the SU(3) \otimes SU(3)_\text{color} gauge-Higgs unification
scenario. To achieve flavor violation is a challenging issue in the scenario,
since the Yukawa couplings are originally higher dimensional gauge
interactions. We argue that the presence of Z_2-odd bulk masses of fermions
plays a crucial role as the new source of flavor violation. Although
introducing brane-localized mass terms in addition to the bulk masses is
necessary to realize flavor mixing, if the bulk masses were universal among
generations, the flavor mixing and flavor changing neutral current processes
are known to disappear. We also discuss whether natural flavor conservation is
realized in the scenario. It is shown that the new source of flavor violation
leads to flavor changing neutral current processes at the tree level due to the
exchange of non-zero Kaluza-Klein gauge bosons. As a typical example we
calculate the rate of K^0 - \bar{K}^0 mixing due to the non-zero Kaluza-Klein
gluon exchange at the tree level. The obtained result for the mass difference
of neutral kaon is suppressed by the inverse powers of the compactification
scale. By comparing our prediction with the data we obtain the lower bound of
the compactification scale as a function of one unfixed parameter of the
theory, which is of {\cal O}(10) TeV, except for some extreme cases. We argue
that the reason to get such rather mild lower bound is the presence of
"GIM-like" mechanism, which is a genuine feature of GHU scenario.Comment: 20 pages, 5 eps files, discussion and numerical analysis under the
  general parameterization of flavor mixings added, minor changes for numerical
  calculation but results unchange
Effective Holographic Theories for low-temperature condensed matter
  systems

The IR dynamics of effective holographic theories capturing the interplay
between charge density and the leading relevant scalar operator at strong
coupling are analyzed. Such theories are parameterized by two real exponents
$(\gamma,\delta)$ that control the IR dynamics. By studying the thermodynamics,
spectra and conductivities of several classes of charged dilatonic black hole
solutions that include the charge density back reaction fully, the landscape of
such theories in view of condensed matter applications is characterized.
Several regions of the $(\gamma,\delta)$ plane can be excluded as the extremal
solutions have unacceptable singularities. The classical solutions have
generically zero entropy at zero temperature, except when $\gamma=\delta$ where
the entropy at extremality is finite. The general scaling of DC resistivity
with temperature at low temperature, and AC conductivity at low frequency and
temperature across the whole $(\gamma,\delta)$ plane, is found. There is a
codimension-one region where the DC resistivity is linear in the temperature.
For massive carriers, it is shown that when the scalar operator is not the
dilaton, the DC resistivity scales as the heat capacity (and entropy) for
planar (3d) systems. Regions are identified where the theory at finite density
is a Mott-like insulator at T=0. We also find that at low enough temperatures
the entropy due to the charge carriers is generically larger than at zero
charge density.Comment: (v3): Added discussion on the UV completion of the solutions, and on
  extremal spectra in the charged case. Expanded discusion on insulating
  extremal solutions. Many other refinements and corrections. 126 pages. 48
  figure
General Gauge Mediation and Deconstruction

We locate a supersymmetry breaking hidden sector and supersymmetric standard
model on different lattice points of an orbifold moose. The hidden sector is
encoded in a set of current correlators and the effects of the current
correlators are mediated by the lattice site gauge groups with "lattice
hopping" functions and through the bifundamental matter that links the lattice
sites together. We show how the gaugino mass, scalar mass and Casimir energy of
the lattice can be computed for a general set of current correlators and then
give specific formulas when the hidden sector is specified to be a generalised
messenger sector coupled to a supersymmetry breaking spurion. The results
reproduce the effect of five dimensional gauge mediation from a purely four
dimensional construction.Comment: 20 pages, 1 figure. Version accepted by JHE
Quark disconnected diagrams in chiral perturbation theory

We show how quark-disconnected and quark-connected contributions to hadronic
n-point functions can be written as independent correlators for which one can
derive expressions in partially quenched chiral effective theory. As an example
we apply the idea to the case of the hadronic vacuum polarisation. In
particular, we consider the cases of the Nf = 2 theory without and with a
partially quenched strange quark and also the Nf = 2 + 1 theory. In the latter
two cases a parameter-free prediction for the disconnected contribution at NLO
in the effective theory is given. Finally we show how twisted boundary
conditions can then be used in lattice QCD to improve the q^2 resolution in the
connected contributions even when flavour singlet operators are considered.Comment: 19 pages, 4 figures; results unchanged; typos corrected, references
  added and discussion extended; accepted for publication in JHE
Webs in multiparton scattering using the replica trick

Soft gluon exponentiation in non-abelian gauge theories can be described in
terms of webs. So far this description has been restricted to amplitudes with
two hard partons, where webs were defined as the colour-connected subset of
diagrams. Here we generalise the concept of webs to the multi-leg case, where
the hard interaction involves non-trivial colour flow. Using the replica trick
from statistical physics we solve the combinatorial problem of non-abelian
exponentiation to all orders. In particular, we derive an algorithm for
computing the colour factor associated with any given diagram in the exponent.
The emerging result is exponentiation of a sum of webs, where each web is a
linear combination of a subset of diagrams that are mutually related by
permuting the eikonal gluon attachments to each hard parton. These linear
combinations are responsible for partial cancellation of subdivergences,
conforming with the renormalization of a multi-leg eikonal vertex. We also
discuss the generalisation of exponentiation properties to beyond the eikonal
approximation.Comment: Revised version, accepted for publication in JHEP. Section 6 revised.
  85 pages, 28 figure