pinecone/core-2020-05-10-deduplication huggingface dataset:
Simplified Phenomenology for Colored Dark Sectors

We perform a general study of the relic density and LHC constraints on
simplified models where the dark matter coannihilates with a strongly
interacting particle X. In these models, the dark matter depletion is driven by
the self-annihilation of X to pairs of quarks and gluons through the strong
interaction. The phenomenology of these scenarios therefore only depends on the
dark matter mass and the mass splitting between dark matter and X as well as
the quantum numbers of X. In this paper, we consider simplified models where X
can be either a scalar, a fermion or a vector, as well as a color triplet,
sextet or octet. We compute the dark matter relic density constraints taking
into account Sommerfeld corrections and bound state formation. Furthermore, we
examine the restrictions from thermal equilibrium, the lifetime of X and the
current and future LHC bounds on X pair production. All constraints are
comprehensively presented in the mass splitting versus dark matter mass plane.
While the relic density constraints can lead to upper bounds on the dark matter
mass ranging from 2 TeV to more than 10 TeV across our models, the prospective
LHC bounds range from 800 to 1500 GeV. A full coverage of the strongly
coannihilating dark matter parameter space would therefore require hadron
colliders with significantly higher center of mass energies.Comment: 34 pages, 8 figures, matches JHEP versio
Chaos and complexity by design

We study the relationship between quantum chaos and pseudorandomness by
developing probes of unitary design. A natural probe of randomness is the
"frame potential," which is minimized by unitary $k$-designs and measures the
$2$-norm distance between the Haar random unitary ensemble and another
ensemble. A natural probe of quantum chaos is out-of-time-order (OTO)
four-point correlation functions. We show that the norm squared of a
generalization of out-of-time-order $2k$-point correlators is proportional to
the $k$th frame potential, providing a quantitative connection between chaos
and pseudorandomness. Additionally, we prove that these $2k$-point correlators
for Pauli operators completely determine the $k$-fold channel of an ensemble of
unitary operators. Finally, we use a counting argument to obtain a lower bound
on the quantum circuit complexity in terms of the frame potential. This
provides a direct link between chaos, complexity, and randomness.Comment: 46+many pages, and all the figures too. v2: the director's cut --
  more jokes, less typo
Simple recipe for holographic Weyl anomaly

We propose a recipe - arguably the simplest - to compute the holographic
type-B Weyl anomaly for general higher-derivative gravity in asymptotically AdS
spacetimes. In 5 and 7 dimensions we identify a suitable basis of curvature
invariants that allows to read off easily, without any further computation, the
Weyl anomaly coefficients of the dual CFT. We tabulate the contributions from
quadratic, cubic and quartic purely algebraic curvature invariants and also
from terms involving derivatives of the curvature. We provide few examples,
where the anomaly coefficients have been obtained by other means, to illustrate
the effectiveness of our prescription
Groomed jets in heavy-ion collisions: sensitivity to medium-induced
  bremsstrahlung

We argue that contemporary jet substructure techniques might facilitate a
more direct measurement of hard medium-induced gluon bremsstrahlung in
heavy-ion collisions, and focus specifically on the "soft drop declustering"
procedure that singles out the two leading jet substructures. Assuming coherent
jet energy loss, we find an enhancement of the distribution of the energy
fractions shared by the two substructures at small subjet energy caused by hard
medium-induced gluon radiation. Departures from this approximation are
discussed, in particular, the effects of colour decoherence and the
contamination of the grooming procedure by soft background. Finally, we propose
a complementary observable, that is the ratio of the two-pronged probability in
Pb-Pb to proton-proton collisions and discuss its sensitivity to various energy
loss mechanisms.Comment: 20 pages, 5 figure
Momentum analyticity of the holographic electric polarizability in 2+1
  dimensions

The static electric polarization of a holographic field theory dual to the
Einstein-Maxwell theory in the background of $AdS_4$ with a
Reissner-Nordst\"{o}m (AdS-RN) black hole is investigated. We prove that the
holographic polarization is a meromorphic functions in complex momentum plane
and locate analytically the asymptotic distribution of the poles along two
straight lines parallel to the imaginary axis for a large momentum magnitude.
The results are compared with the numerical result on Friedel-like poles of the
same holographic model reported in the literature and with the momentum
singularities of the one-loop polarization in weak-coupling spinor QED$_3$ and
scalar QED$_3$ with the similarities and differences discussed.Comment: 31 pages, 2 figure
Leading CFT constraints on multi-critical models in d>2

We consider the family of renormalizable scalar QFTs with self-interacting
potentials of highest monomial $\phi^{m}$ below their upper critical dimensions
$d_c=\frac{2m}{m-2}$, and study them using a combination of CFT constraints,
Schwinger-Dyson equation and the free theory behavior at the upper critical
dimension. For even integers $m \ge 4$ these theories coincide with the
Landau-Ginzburg description of multi-critical phenomena and interpolate with
the unitary minimal models in $d=2$, while for odd $m$ the theories are
non-unitary and start at $m=3$ with the Lee-Yang universality class. For all
the even potentials and for the Lee-Yang universality class, we show how the
assumption of conformal invariance is enough to compute the scaling dimensions
of the local operators $\phi^k$ and of some families of structure constants in
either the coupling's or the $\epsilon$-expansion. For all other odd potentials
we express some scaling dimensions and structure constants in the coupling's
expansion.Comment: 29 pages, 1 figure; V2: references added, minor improvements, to
  appear in JHE
Supersymmetric Renyi Entropy and Anomalies in Six-Dimensional (1,0)
  Superconformal Theories

A closed formula of the universal part of supersymmetric R\'enyi entropy
$S_q$ for six-dimensional $(1,0)$ superconformal theories is proposed. Within
our arguments, $S_q$ across a spherical entangling surface is a cubic
polynomial of $\nu=1/q$, with $4$ coefficients expressed as linear combinations
of the 't Hooft anomaly coefficients for the $R$-symmetry and gravitational
anomalies. As an application, we establish linear relations between the
$c$-type Weyl anomalies and the 't Hooft anomaly coefficients. We make a
conjecture relating the supersymmetric R\'enyi entropy to an equivariant
integral of the anomaly polynomial in even dimensions and check it against
known data in four dimensions and six dimensions.Comment: 1+27 pages, v2: references added+typos fixed. arXiv admin note: text
  overlap with arXiv:1512.0300
Numerical Multi-Loop Calculations via Finite Integrals and One-Mass
  EW-QCD Drell-Yan Master Integrals

We study a recently-proposed approach to the numerical evaluation of
multi-loop Feynman integrals using available sector decomposition programs. As
our main example, we consider the two-loop integrals for the $\alpha \alpha_s$
corrections to Drell-Yan lepton production with up to one massive vector boson
in physical kinematics. As a reference, we evaluate these planar and non-planar
integrals by the method of differential equations through to weight five.
Choosing a basis of finite integrals for the numerical evaluation with SecDec3
leads to tremendous performance improvements and renders the otherwise
problematic seven-line topologies numerically accessible. As another example,
basis integrals for massless QCD three loop form factors are evaluated with
FIESTA4. Here, employing a basis of finite integrals results in an overall
speedup of more than an order of magnitude.Comment: 24 pages, 1 figure, 4 tables, 2 ancillary files with analytical
  results; in v2: minor improvements in the text with additional references
  added. v2 is the version published in JHE
Anarchy and Neutrino Physics

The neutrino sector of a seesaw-extended Standard Model is investigated under
the anarchy hypothesis. The previously derived probability density functions
for neutrino masses and mixings, which characterize the type I-III seesaw
ensemble of $N\times N$ complex random matrices, are used to extract
information on the relevant physical parameters. For $N=2$ and $N=3$, the
distributions of the light neutrino masses, as well as the mixing angles and
phases, are obtained using numerical integration methods. A systematic
comparison with the much simpler type II seesaw ensemble is also performed to
point out the fundamental differences between the two ensembles. It is found
that the type I-III seesaw ensemble is better suited to accommodate
experimental data. Moreover, the results indicate a strong preference for the
mass splitting associated to normal hierarchy. However, since all permutations
of the singular values are found to be equally probable for a particular mass
splitting, predictions regarding the hierarchy of the mass spectrum remains out
of reach in the framework of anarchy.Comment: 1+22 pages, 8 figures, typos fixed, added referenc
Chiral Soliton Lattice and Charged Pion Condensation in Strong Magnetic
  Fields

The Chiral Soliton Lattice (CSL) is a state with a periodic array of
topological solitons that spontaneously breaks parity and translational
symmetries. Such a state is known to appear in chiral magnets. We show that CSL
also appears as a ground state of quantum chromodynamics at nonzero chemical
potential in a magnetic field. By analyzing the fluctuations of the CSL, we
furthermore demonstrate that in strong but achievable magnetic fields, charged
pions undergo Bose-Einstein condensation. Our results, based on a systematic
low-energy effective theory, are model-independent and fully analytic.Comment: v2: 19 pages, 6 figures; substantially extended version of the paper,
  published in JHE
Transplanckian Censorship and Global Cosmic Strings

Large field excursions are required in a number of axion models of inflation.
These models also possess global cosmic strings, around which the axion follows
a path mirroring the inflationary trajectory. Cosmic strings are thus an
interesting theoretical laboratory for the study of transplanckian field
excursions. We describe connections between various effective field theory
models of axion monodromy and study the classical spacetimes around their
supercritical cosmic strings. For small decay constants $f<M_p$ and large
winding numbers $n>M_p/f$, the EFT is under control and the string cores
undergo topological inflation, which may be either of exponential or power-law
type. We show that the exterior spacetime is nonsingular and equivalent to a
decompactifying cigar geometry, with the radion rolling in a potential
generated by axion flux. Signals are able to circumnavigate infinite straight
strings in finite but exponentially long time, $t\sim e^{\Delta a/M_p}$. For
finite loops of supercritical string in asymptotically flat space, we argue
that if topological inflation occurs, then topological censorship implies
transplanckian censorship, or that external observers are forbidden from
threading the loop and observing the full excursion of the axion.Comment: v2: refs added, fig 6 extended. published in JHEP. 28 pages, 7
  figure
No Simple Dual to the Causal Holographic Information?

In AdS/CFT, the fine grained entropy of a boundary region is dual to the area
of an extremal surface X in the bulk. It has been proposed that the area of a
certain 'causal surface' C - i.e. the 'causal holographic information' (CHI) -
corresponds to some coarse-grained entropy in the boundary theory. We construct
two kinds of counterexamples that rule out various possible duals, using (1)
vacuum rigidity and (2) thermal quenches. This includes the 'one-point entropy'
proposed by Kelly and Wall, and a large class of related procedures. Also, any
coarse-graining that fixes the geometry of the bulk 'causal wedge' bounded by
C, fails to reproduce CHI. This is in sharp contrast to the holographic
entanglement entropy, where the area of the extremal surface X measures the
same information that is found in the 'entanglement wedge' bounded by X.Comment: 21 pages, 5 figure
Comments on Global Symmetries, Anomalies, and Duality in (2+1)d

We analyze in detail the global symmetries of various (2+1)d quantum field
theories and couple them to classical background gauge fields. A proper
identification of the global symmetries allows us to consider all non-trivial
bundles of those background fields, thus finding more subtle observables. The
global symmetries exhibit interesting 't Hooft anomalies. These allow us to
constrain the IR behavior of the theories and provide powerful constraints on
conjectured dualities.Comment: 45 pages, 2 figures; v2: minor improvements and refs adde
S-duality invariant perturbation theory improved by holography

We study anomalous dimensions of unprotected low twist operators in the
four-dimensional $SU(N)$ $\mathcal{N}=4$ supersymmetric Yang-Mills theory. We
construct a class of interpolating functions to approximate the dimensions of
the leading twist operators for arbitrary gauge coupling $\tau$. The
interpolating functions are consistent with previous results on the
perturbation theory, holographic computation and full S-duality. We use our
interpolating functions to test a recent conjecture by the $\mathcal{N}=4$
superconformal bootstrap that upper bounds on the dimensions are saturated at
one of the duality-invariant points $\tau =i$ and $\tau =e^{i\pi /3}$. It turns
out that our interpolating functions have maximum at $\tau =e^{i\pi /3}$, which
are close to the conjectural values by the conformal bootstrap. In terms of the
interpolating functions, we draw the image of conformal manifold in the space
of the dimensions. We find that the image is almost a line despite the
conformal manifold is two-dimensional. We also construct interpolating
functions for the subleading twist operator and study level crossing phenomenon
between the leading and subleading twist operators. Finally we study the
dimension of the Konishi operator in the planar limit. We find that our
interpolating functions match with numerical result obtained by Thermodynamic
Bethe Ansatz very well. It turns out that analytic properties of the
interpolating functions reflect an expectation on a radius of convergence of
the perturbation theory.Comment: 39+14 pages, 22 figures; v3: minor correction
Entangling Higgs production associated with a single top and a top-quark
  pair in the presence of anomalous top-Yukawa coupling

The ATLAS and CMS collaborations observed a mild excess in the associated
Higgs production with a top-quark pair ($t\bar t h$) and reported the signal
strengths of $ \mu_{tth}^{\rm ATLAS}=1.81\pm 0.80$ and $\mu_{tth}^{\rm
CMS}=2.75\pm 0.99 $ based on the data collected at $\sqrt{s}$= 7 and 8 TeV.
Although, at the current stage, there is no obvious indication whether the
excess is real or due to statistical fluctuations, here we perform a case study
of this mild excess by exploiting the strong entanglement between the
associated Higgs production with a single top quark ($thX$) and $t\bar t h$
production in the presence of anomalous top-Yukawa coupling. As well known,
$t\bar t h$ production only depends on the absolute value of the top-Yukawa
coupling. Meanwhile, in $thX$ production, this degeneracy is lifted through the
strong interference between the two main contributions which are proportional
to the top-Yukawa and the gauge-Higgs couplings, respectively. Especially, when
the relative sign of the top-Yukawa coupling with respect to the gauge-Higgs
coupling is reversed, the $thX$ cross section can be enhanced by more than one
order of magnitude. We perform a detailed study of the influence of $thX$
production on $t\bar{t}h $ production in the presence of the anomalous
top-Yukawa coupling and point out that it is crucial to include $thX$
production in the analysis of the $t\bar t h$ data to pin down the sign and the
size of the top-Yukawa coupling in future. While assuming the Standard Model
(SM) value for the gauge-Higgs coupling, we vary the top-Yukawa coupling within
the range allowed by the current LHC Higgs data. We consider the Higgs decay
modes into multileptons, $b\bar b$ and $\gamma\gamma$ putting a particular
emphasis on the same sign dilepton events. We also discuss ...Comment: 32 pages, 10 figures, 12 tables, to appear in JHE
On four-point interactions in massless higher spin theory in flat space

We consider the minimal interacting theory of a single tower of spin
j=0,2,4,... massless Fronsdal fields in flat space for which consistent
covariant cubic interaction vertices are known. We address the question of
constraints on possible quartic interaction vertices imposed by the condition
of on-shell gauge invariance of the tree-level four-point scattering amplitudes
involving three spin 0 and one spin j particle. We find that these constraints
admit a local solution for quartic 000j interaction term in the action only for
j=2 and j=4. We determine the non-local terms in four-vertices required in the
case of spin j greater than 4 and show that these non-localities can be
interpreted as a result of integrating out a tower of auxiliary ghost-like
massless higher spin fields in an extended theory with a local action. We also
consider the conformal off-shell extension of the Einstein theory and show that
its perturbative expansion is the same as of the the non-local action resulting
from integrating out the trace of the graviton field from the Einstein action.
Motivated by this example, we conjecture the existence of a similar conformal
off-shell extension of a massless higher spin theory that may be related to the
above extended theory and may have the same infinite-dimensional symmetry as
the conformal higher spin theory and thus may lead to a trivial S matrix.Comment: 39 pages. v2: references added; v3: few comments added, misprints
  correcte
Zero Modes and Entanglement Entropy

Ultraviolet divergences are widely discussed in studies of entanglement
entropy. Also present, but much less understood, are infrared divergences due
to zero modes in the field theory. In this note, we discuss the importance of
carefully handling zero modes in entanglement entropy. We give an explicit
example for a chain of harmonic oscillators in 1D, where a mass regulator is
necessary to avoid an infrared divergence due to a zero mode. We also comment
on a surprising contribution of the zero mode to the UV-scaling of the
entanglement entropy.Comment: v2: 12 pages, 8 figures. Minor changes and typos fixed. Figure and
  details added on the UV behavior of the giant eigenvalue in the limit of
  large system size. Discussion added of relation to other wor
Meromorphic Flux Compactification

We present exact solutions of four-dimensional Einstein's equations related
to Minkoswki vacuum constructed from Type IIB string theory with non-trivial
fluxes. Following recent works, we study a non-trivial flux compactification on
a fibered product by a four-dimensional torus and a two-dimensional sphere
punctured by 5- and 7-branes. By considering only 3-form fluxes and the
dilaton, as functions on the internal sphere coordinates, we show that these
solutions correspond to a family of supersymmetric solutions constructed by the
use of G-theory. Meromorphicity on functions constructed in terms of fluxes and
warping factors guarantees that flux and 5-brane contributions to the scalar
curvature vanish while fulfilling stringent constraints as tadpole cancellation
and Bianchi identities. Different Einstein's solutions are shown to be related
by U-dualities. We present three supersymmetric non-trivial Minkowski vacuum
solutions and compute the corresponding soft terms. We also construct a
non-supersymmetric solution and study its stability.Comment: 33 pages, 1 figure. v2: References added. v3: Some clarifications
  added, index notation refined, minor changes. Accepted for publication in
  JHE
Measurements of the S-wave fraction in $B^{0}\rightarrow
  K^{+}\pi^{-}\mu^{+}\mu^{-}$ decays and the $B^{0}\rightarrow
  K^{\ast}(892)^{0}\mu^{+}\mu^{-}$ differential branching fraction

A measurement of the differential branching fraction of the decay
${B^{0}\rightarrow K^{\ast}(892)^{0}\mu^{+}\mu^{-}}$ is presented together with
a determination of the S-wave fraction of the $K^+\pi^-$ system in the decay
$B^{0}\rightarrow K^{+}\pi^{-}\mu^{+}\mu^{-}$. The analysis is based on
$pp$-collision data corresponding to an integrated luminosity of 3\,fb$^{-1}$
collected with the LHCb experiment. The measurements are made in bins of the
invariant mass squared of the dimuon system, $q^2$. Precise theoretical
predictions for the differential branching fraction of $B^{0}\rightarrow
K^{\ast}(892)^{0}\mu^{+}\mu^{-}$ decays are available for the $q^2$ region
$1.1<q^2<6.0\,{\rm GeV}^2/c^4$. In this $q^2$ region, for the $K^+\pi^-$
invariant mass range $796 < m_{K\pi} < 996\,{\rm MeV}/c^2$, the S-wave fraction
of the $K^+\pi^-$ system in $B^{0}\rightarrow K^{+}\pi^{-}\mu^{+}\mu^{-}$
decays is found to be \begin{equation*}
  F_{\rm S} = 0.101\pm0.017({\rm stat})\pm0.009 ({\rm syst}), \end{equation*}
and the differential branching fraction of $B^{0}\rightarrow
K^{\ast}(892)^{0}\mu^{+}\mu^{-}$ decays is determined to be \begin{equation*}
  {\rm d}\mathcal{B}/{\rm d} q^2 = (0.342_{\,-0.017}^{\,+0.017}({\rm
stat})\pm{0.009}({\rm syst})\pm0.023({\rm norm}))\times 10^{-7}c^{4}/{\rm
GeV}^{2}. \end{equation*} The differential branching fraction measurements
presented are the most precise to date and are found to be in agreement with
Standard Model predictions.Comment: All figures and tables, along with any supplementary material and
  additional information, are available at
  https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2016-012.html
  ; corrected numerical result
Hunting the dark Higgs

We discuss a novel signature of dark matter production at the LHC resulting
from the emission of an additional Higgs boson in the dark sector. The presence
of such a dark Higgs boson is motivated simultaneously by the need to generate
the masses of the particles in the dark sector and the possibility to relax
constraints from the dark matter relic abundance by opening up a new
annihilation channel. If the dark Higgs boson decays into Standard Model states
via a small mixing with the Standard Model Higgs boson, one obtains
characteristic large-radius jets in association with missing transverse
momentum that can be used to efficiently discriminate signal from backgrounds.
We present the sensitivities achievable in LHC searches for dark Higgs bosons
with already collected data and demonstrate that such searches can probe large
regions of parameter space that are inaccessible to conventional mono-jet or
di-jet searches.Comment: 22 pages, 7 figures; v2: references added, matches published versio