pinecone/core-2020-05-10-deduplication huggingface dataset:
Anarchy with linear and bilinear interactions

Composite Higgs models with anarchic partial compositeness require a scale of
new physics ${\cal O}(10-100)$ TeV, with the bounds being dominated by the
dipole moments and $\epsilon_K$. The presence of anarchic bilinear interactions
can change this picture. We show a solution to the SM flavor puzzle where the
electron and the Right-handed quarks of the first generation have negligible
linear interactions, and the bilinear interactions account for most of their
masses, whereas the other chiral fermions follow a similar pattern to anarchic
partial compositeness. We compute the bounds from flavor and CP violation and
show that neutron and electron dipole moments, as well as $\epsilon_K$ and
$\mu\to e\gamma$, are compatible with a new physics scale below the TeV.
$\Delta F=2$ operators involving Left-handed quarks and $\Delta F=1$ operators
with $d_L$ give the most stringent bounds in this scenario. Their Wilson
coefficients have the same origin as in anarchic partial compositeness,
requiring the masses of the new states to be larger than ${\cal O}(6-7)$ TeV.Comment: 26 page
Einstein-Gauss-Bonnet Black Strings at Large $D$

We study the black string solutions in the Einstein-Gauss-Bonnet(EGB) theory
at large $D$. By using the $1/D$ expansion in the near horizon region we derive
the effective equations that describe the dynamics of the EGB black strings.
The uniform and non-uniform black strings are obtained as the static solutions
of the effective equations. From the perturbation analysis of the effective
equations, we find that thin EGB black strings suffer from the Gregory-Laflamme
instablity and the GB term weakens the instability when the GB coefficient is
small, however, when the GB coefficient is large the GB term enhances the
instability. Furthermore, we numerically solve the effective equations to study
the non-linear instability. It turns out that the thin black strings are
unstable to developing inhomogeneities along their length, and at late times
they asymptote to the stable non-uniform black strings. The behavior is
qualitatively similar to the case in the Einstein gravity. Compared with the
black string instability in the Einstein gravity at large D, when the GB
coefficient is small the time needed to reach to final state increases, but
when the GB coefficient is large the time to reach to final state decreases.
Starting from the point of view in which the effective equations can be
interpreted as the equations for the dynamical fluid, we evaluate the transport
coefficients and find that the ratio of the shear viscosity and the entropy
density agrees with that obtained previously in the membrane paradigm after
taking the large $D$ limit.Comment: 22 pages, 8 figures, some errors corrected, references adde
Complete NLO corrections to ${\rm W}^+{\rm W}^+$ scattering and its
  irreducible background at the LHC

The process ${\rm p}{\rm p}\to\mu^+\nu_\mu{\rm e}^+\nu_{\rm e}{\rm j}{\rm j}$
receives several contributions of different orders in the strong and
electroweak coupling constants. Using appropriate event selections, this
process is dominated by vector-boson scattering (VBS) and has recently been
measured at the LHC. It is thus of prime importance to estimate precisely each
contribution. In this article we compute for the first time the full NLO QCD
and electroweak corrections to VBS and its irreducible background processes
with realistic experimental cuts. We do not rely on approximations but use
complete amplitudes involving two different orders at tree level and three
different orders at one-loop level. Since we take into account all
interferences, at NLO level the corrections to the VBS process and to the
QCD-induced irreducible background process contribute at the same orders. Hence
the two processes cannot be unambiguously distinguished, and all contributions
to the $\mu^+\nu_\mu{\rm e}^+\nu_{\rm e}{\rm j}{\rm j}$ final state should be
preferably measured together.Comment: 25 pages,21 eps-figures. Matches the published versio
Non-perturbatively gauge-fixed compact $U(1)$ lattice gauge theory

An extensive study of the compact $U(1)$ lattice gauge theory with a higher
derivative gauge-fixing term and a suitable counter-term has been undertaken to
determine the nature of the possible continuum limits for a wide range of the
parameters, especially at strong gauge couplings ($g>1$), adding to our
previous study at a single gauge coupling $g=1.3$ \cite{DeSarkar2016}. Our
major conclusion is that a continuum limit of free massless photons (with the
redundant pure gauge degrees of freedom decoupled) is achieved at any gauge
coupling, not necessarily small, provided the coefficient $\tilde{\kappa}$ of
the gauge-fixing term is sufficiently large. In fact, the region of continuous
phase transition leading to the above physics in the strong gauge coupling
region is found to be analytically connected to the point $g=0$ and
$\tilde{\kappa} \rightarrow \infty$ where the classical action has a global
unique minimum, around which weak coupling perturbation theory in bare
parameters is defined, controlling the physics of the whole region. A second
major conclusion is that, local algorithms like Multihit Metropolis fail to
produce faithful field configurations with large values of the coefficient
$\tilde{\kappa}$ of the higher derivative gauge-fixing term and at large
lattice volumes. A global algorithm like Hybrid Monte Carlo, although at times
slow to move out of metastabilities, generally is able to produce faithful
configurations and has been used extensively in the current study.Comment: 25 pages, 18 figures, version accepted for publication in JHE
The (2,0) Superalgebra, Null M-branes and Hitchin's System

We present an interacting system of equations with sixteen supersymmetries
and an $SO(2)\times SO(6)$ R-symmetry where the fields depend on two space and
one null dimensions that is derived from a representation of the
six-dimensional (2,0) superalgebra. The system can be viewed as two M5-branes
compactified on $S^1_-\times {\mathbb T}^2$ or equivalently as M2-branes on
${\mathbb R}_+\times {\mathbb R}^2$, where $\pm$ refer to null directions. We
show that for a particular choice of fields the dynamics can be reduced to
motion on the moduli space of solutions to the Hitchin system. We argue that
this provides a description of intersecting null M2-branes and is also related
by U-duality to a DLCQ description of four-dimensional maximally supersymmetric
Yang-Mills.Comment: Errors in the supersymmetry transformations correcte
Families from Supergroups and Predictions for Leptonic CP Violation

As was shown in 1984 by Caneschi, Farrar, and Schwimmer, decomposing
representations of the supergroup SU(M|N), can give interesting anomaly-free
sets of fermion representations of SU(M) x SU(N) x U(1). It is shown here that
such groups can be used to construct realistic grand unified models with
non-abelian gauged family symmetries. A particularly simple three-family
example based on SU(5) x SU(2) x U(1) is studied. The forms of the mass
matrices, including that of the right-handed neutrinos, are determined in terms
of SU(2) Clebsch coefficients; and the model is able to fit the lepton sector
and predict the Dirac CP-violating phase of the neutrinos.. Models of this type
would have a rich phenomenology if part of the family symmetry is broken near
the electroweak scale.Comment: 11 pages, no figures. Title changed. Section 3 expanded to include
  realistic solution for lepton secto
4D Higher Spin Black Holes with Nonlinear Scalar Fluctuations

We construct an infinite-dimensional space of solutions to Vasiliev's
equations in four dimensions that are asymptotic to AdS spacetime and superpose
massless scalar particle modes over static higher spin black holes. Each
solution is obtained by a large gauge transformation of an all-order
perturbatively defined particular solution given in a simple gauge, in which
the spacetime connection vanishes, the twistor space connection is holomorphic,
and all local degrees of freedom are encoded into the residual twistor space
dependence of the spacetime zero-forms. The latter are expanded over two dual
spaces of Fock space operators, corresponding to scalar particle and static
black hole modes, equipped with positive definite sesquilinear and bilinear
forms, respectively. Switching on an AdS vacuum gauge function, the twistor
space connection becomes analytic at generic spacetime points, which makes it
possible to reach Vasiliev's gauge, in which Fronsdal fields arise
asymptotically, by another large transformation given here at first order. The
particle and black hole modes are related by a twistor space Fourier transform,
resulting in a black hole backreaction already at the second order of classical
perturbation theory. We speculate on the existence of a fine-tuned branch of
moduli space that is free from black hole modes and directly related to the
quasi-local deformed Fronsdal theory. Finally, we comment on a possible
interpretation of the higher spin black hole solutions as black-hole
microstates.Comment: 63 pages + appendices; v2: reference added; v3: comments and
  references added, typos correcte
Backreacted DBI Magnetotransport with Momentum Dissipation

We examine magnetotransport in a holographic Dirac-Born-Infeld model, taking
into account the effects of backreaction on the geometry. The theory we
consider includes axionic scalars, introduced to break translational symmetry
and generate momentum dissipation. The generic structure of the DC conductivity
matrix for these theories is extremely rich, and is significantly more complex
than that obtained in the probe approximation. We find new classes of black
brane solutions, including geometries that exhibit Lifshitz scaling and
hyperscaling violation, and examine their implications on the transport
properties of the system. Depending on the choice of theory parameters, these
backgrounds can lead to metallic or insulating behavior. Negative
magnetoresistance is observed in a family of dynoic solutions. Some of the new
backreacted geometries also support magnetic-field-induced metal-insulator
transitions.Comment: 34 pages, 9 figures; v2: references added, minor improvements, to
  appear in JHE
Non-geometric fluxes & tadpole conditions for exotic branes

We extend the $P$-flux analysis carried out recently on the
$T^6/[\mathbb{Z}_2 \times \mathbb{Z}_2 ]$ type-II orientifold model to include
all the possible non-geometric fluxes. By deriving universal T-duality rules
for all the fluxes, we are able to write down a complete expression for the
superpotential for both the IIB and IIA theories. By exploiting the universal
T-duality rules that apply to all the branes in string theory, we then identify
all the exotic branes that can be consistently included to cancel the tadpoles
induced by the fluxes. Finally, we derive the representations of these branes
with respect to the $SL(2,\mathbb{Z})^7$ duality symmetry of the model.Comment: 33 pages, refs. added. Notation improved. Discussion on the solutions
  of the tadpole conditions added in the conclusions. Version published on JHE
A symmetry for $\epsilon_K$

We show a symmetry that, in the context of a composite Higgs with anarchic
flavor, can suppress the dominant CP violating contributions to $K-\bar K$
mixing. Based on previous extensions of SU(3)$_c$, we consider the case in
which the composite sector has a global SU(6) symmetry, spontaneously broken to
a subgroup containing SU(3)$\times$SU(3). We show that the interactions with
the Standard Model can spontaneously break the remaining symmetry to the
diagonal subgroup, identified with the group of color interactions, and
naturally suppress $\epsilon_K$. We consider this scenario in the context of
the Minimal Composite Higgs Model based on SO(5)/SO(4) for the electroweak
sector. By working in the framework of 2-site models, we compute the scalar
potential, determine the conditions for a successful breaking of the symmetries
and calculate the spectrum of lightest states. We find that $\epsilon_K$ can be
suppressed and the top mass reproduced for a large region of the parameter
space where the symmetries are dynamically broken. Besides other new
resonances, the model predicts the presence of a new singlet scalar state,
generally lighter than the Higgs, that could have evaded detection at
colliders.Comment: 33 pages, 4 figures, v2: discussion on bounds from dipole moments
  added, references adde
A new handle on three-point coefficients: OPE asymptotics from genus two
  modular invariance

We derive an asymptotic formula for operator product expansion coefficients
of heavy operators in two dimensional conformal field theory. This follows from
modular invariance of the genus two partition function, and generalises the
asymptotic formula for the density of states from torus modular invariance. The
resulting formula is universal, depending only on the central charge, but
involves the asymptotic behaviour of genus two conformal blocks. We use
monodromy techniques to compute the asymptotics of the relevant blocks at large
central charge to determine the behaviour explicitly.Comment: 32 pages, 2 figures, 1 appendix, 2 moose, a bear and an o
On Holographic Entanglement Density

We use holographic duality to study the entanglement entropy (EE) of
Conformal Field Theories (CFTs) in various spacetime dimensions $d$, in the
presence of various deformations: a relevant Lorentz scalar operator with
constant source, a temperature $T$, a chemical potential $\mu$, a marginal
Lorentz scalar operator with source linear in a spatial coordinate, and a
circle-compactified spatial direction. We consider EE between a strip or sphere
sub-region and the rest of the system, and define the "entanglement density"
(ED) as the change in EE due to the deformation, divided by the sub-region's
volume. Using the deformed CFTs above, we show how the ED's dependence on the
strip width or sphere radius, $L$, is useful for characterizing states of
matter. For example, the ED's small-$L$ behavior is determined either by the
dimension of the perturbing operator or by the first law of EE. For
Lorentz-invariant renormalization group (RG) flows between CFTs, the "area
theorem" states that the coefficient of the EE's area law term must be larger
in the UV than in the IR. In these cases the ED must therefore approach zero
from below as $L \to \infty$. However, when Lorentz symmetry is broken and the
IR fixed point has different scaling from the UV, we find that the ED often
approaches the thermal entropy density from above, indicating area theorem
violation.Comment: References clarified and updated compared to JHEP versio
Out-of-time-order correlators in quantum mechanics

The out-of-time-order correlator (OTOC) is considered as a measure of quantum
chaos. We formulate how to calculate the OTOC for quantum mechanics with a
general Hamiltonian. We demonstrate explicit calculations of OTOCs for a
harmonic oscillator, a particle in a one-dimensional box, a circle billiard and
stadium billiards. For the first two cases, OTOCs are periodic in time because
of their commensurable energy spectra. For the circle and stadium billiards,
they are not recursive but saturate to constant values which are linear in
temperature. Although the stadium billiard is a typical example of the
classical chaos, an expected exponential growth of the OTOC is not found. We
also discuss the classical limit of the OTOC. Analysis of a time evolution of a
wavepacket in a box shows that the OTOC can deviate from its classical value at
a time much earlier than the Ehrenfest time.Comment: 30 pages, 13 figure
Towards a Holographic Quark Matter Crystal

We construct the gravity dual of $d=4$, $\mathcal{N}=4$, SU($N_\rm{c}$) super
Yang-Mills theory, coupled to $N_\rm{f}$ flavors of dynamical quarks, at
non-zero temperature $T$ and non-zero quark density $N_\rm{q}$. The
supergravity solutions possess a regular horizon if $T>0$ and include the
backreaction of $N_\rm{c}$ color D3-branes and $N_\rm{f}$ flavor D7-branes with
$N_\rm{q}$ units of electric flux on their worldvolume. At zero temperature the
solutions interpolate between a Landau pole singularity in the ultraviolet and
a Lifshitz geometry in the infrared. At high temperature the thermodynamics is
directly sensitive to the Landau pole, whereas at low temperature it is not, as
expected from effective field theory. At low temperature and sufficiently high
charge density we find thermodynamic and dynamic instabilities towards the
spontaneous breaking of translation invariance.Comment: 38 pages plus appendices, 25 figures. v2: minor changes, published
  versio
Holographic duals of large-c torus conformal blocks

We study CFT2 conformal blocks on a torus and their holographic realization.
The classical conformal blocks arising in the regime where conformal dimensions
grow linearly with the large central charge are shown to be holographically
dual to the geodesic networks stretched in the thermal AdS bulk space. We
discuss the n-point conformal blocks and their duals, the 2-point case is
elaborated in full detail. We develop various techniques to calculate both
quantum and classical conformal block functions. In particular, we show that
exponentiated global torus blocks reproduce classical torus blocks in the
specific perturbative regimes of the conformal parameter space.Comment: 37 pages, v2: more comments, Appendix E --> Section 7.1, refs added,
  journal versio
Squark production in R-symmetric SUSY with Dirac gluinos: NLO
  corrections

R-symmetry leads to a distinct realisation of SUSY with a significantly
modified coloured sector featuring a Dirac gluino and a scalar colour octet
(sgluon). We present the impact of R-symmetry on squark production at the 13
TeV LHC. We study the total cross sections and their NLO corrections from all
strongly interacting states, their dependence on the Dirac gluino mass and
sgluon mass as well as their systematics for selected benchmark points. We find
that tree-level cross sections in the R-symmetric model are reduced compared to
the MSSM but the NLO K-factors are generally larger in the order of ten to
twenty per cent. In the course of this work we derive the required DREG $\to$
DRED transition counterterms and necessary on-shell renormalisation constants.
The real corrections are treated using FKS subtraction, with results cross
checked against an independent calculation employing the two cut phase space
slicing method.Comment: 46 pages, 15 figures; updated to match published versio
Reactor Fuel Fraction Information on the Antineutrino Anomaly

We analyzed the evolution data of the Daya Bay reactor neutrino experiment in
terms of short-baseline active-sterile neutrino oscillations taking into
account the theoretical uncertainties of the reactor antineutrino fluxes. We
found that oscillations are disfavored at $2.6\sigma$ with respect to a
suppression of the $^{235}\text{U}$ reactor antineutrino flux and at
$2.5\sigma$ with respect to variations of the $^{235}\text{U}$ and
$^{239}\text{Pu}$ fluxes. On the other hand, the analysis of the rates of the
short-baseline reactor neutrino experiments favor active-sterile neutrino
oscillations and disfavor the suppression of the $^{235}\text{U}$ flux at
$3.1\sigma$ and variations of the $^{235}\text{U}$ and $^{239}\text{Pu}$ fluxes
at $2.8\sigma$. We also found that both the Daya Bay evolution data and the
global rate data are well-fitted with composite hypotheses including variations
of the $^{235}\text{U}$ or $^{239}\text{Pu}$ fluxes in addition to
active-sterile neutrino oscillations. A combined analysis of the Daya Bay
evolution data and the global rate data shows a slight preference for
oscillations with respect to variations of the $^{235}\text{U}$ and
$^{239}\text{Pu}$ fluxes. However, the best fits of the combined data are given
by the composite models, with a preference for the model with an enhancement of
the $^{239}\text{Pu}$ flux and relatively large oscillations.Comment: 9 page
Non-geometric Kaluza-Klein monopoles and magnetic duals of M-theory
  R-flux backgrounds

We introduce a magnetic analogue of the seven-dimensional nonassociative
octonionic R-flux algebra that describes the phase space of M2-branes in
four-dimensional locally non-geometric M-theory backgrounds. We show that these
two algebras are related by a Spin(7) automorphism of the 3-algebra that
provides a covariant description of the eight-dimensional M-theory phase space.
We argue that this algebra also underlies the phase space of electrons probing
a smeared magnetic monopole in quantum gravity by showing that upon appropriate
contractions, the algebra reduces to the noncommutative algebra of a spin foam
model of three-dimensional quantum gravity, or to the nonassociative algebra of
electrons in a background of uniform magnetic charge. We realise this set-up in
M-theory as M-waves probing a delocalised Kaluza-Klein monopole, and show that
this system also has a seven-dimensional phase space. We suggest that the
smeared Kaluza-Klein monopole is non-geometric because it cannot be described
by a local metric. This is the magnetic analogue of the local non-geometry of
the R-flux background and arises because the smeared Kaluza-Klein monopole is
described by a U(1)-gerbe rather than a U(1)-fibration.Comment: 19 pages, 2 figures; v2: dimensionful factors corrected throughout,
  exposition improved; Final version to be published in JHE
On holographic entanglement entropy of Horndeski black holes

We study entanglement entropy in a particular tensor-scalar theory: Horndeski
gravity. Our goal is two-fold: investigate the Lewkowycz-Maldacena proposal for
entanglement entropy in the presence of a tensor-scalar coupling and address a
puzzle existing in the literature regarding the thermal entropy of
asymptotically AdS Horndeski black holes. Using the squashed cone method, i.e.
turning on a conical singularity in the bulk, we derive the functional for
entanglement entropy in Horndeski gravity. We analyze the divergence structure
of the bulk equation of motion. Demanding that the leading divergence of the
transverse component of the equation of motion vanishes we identify the surface
where to evaluate the entanglement functional. We show that the surface
obtained is precisely the one that minimizes said functional. By evaluating the
entanglement entropy functional on the horizon we obtain the thermal entropy
for Horndeski black holes; this result clarifies discrepancies in the
literature. As an application of the functional derived we find the minimal
surfaces numerically and study the entanglement plateaux.Comment: 29 pages, multiple figures. v3: sections 3.2, 3.3 and 4 sharpene
The Mellin Formalism for Boundary CFT$_d$

We extend the Mellin representation of conformal field theory (CFT) to allow
for conformal boundaries and interfaces. We consider the simplest holographic
setup dual to an interface CFT - a brane filling an $AdS_{d}$ subspace of
$AdS_{d+1}$ - and perform a systematic study of Witten diagrams in this setup.
As a byproduct of our analysis, we show that geodesic Witten diagrams in this
geometry reproduce interface CFT$_d$ conformal blocks, generalizing the
analogous statement for CFTs with no defects.Comment: 38 pages, 7 figures; v2 references added, minor changes; v3 typos
  corrected, derivation in 4.3 now applies to the most general case. Published
  versio
Monstrous entanglement

The Monster CFT plays an important role in moonshine and is also conjectured
to be the holographic dual to pure gravity in AdS3. We investigate the
entanglement and Renyi entropies of this theory along with other extremal CFTs.
The Renyi entropies of a single interval on the torus are evaluated using the
short interval expansion. Each order in the expansion contains closed form
expressions of the modular parameter. The leading terms in the q-series are
shown to precisely agree with the universal corrections to Renyi entropies at
low temperatures. Furthermore, these results are shown to match with bulk
computations of Renyi entropy using the one-loop partition function on
handlebodies. We also explore some features of Renyi entropies of two intervals
on the plane.Comment: 41 pages, 4 figures; v2: typos corrected, approximates published
  versio