pinecone/core-2020-05-10-deduplication huggingface dataset:
Multiscale confining dynamics from holographic RG flows

We consider renormalization group flows between conformal field theories in
five (six) dimensions with a string (M-theory) dual. By compactifying on a
circle (torus) with appropriate boundary conditions, we obtain continuous
families of confining four-dimensional theories parametrized by the ratio
$\Lambda_{\rm {\tiny flow}}/\Lambda_{\rm \tiny{QCD}}$, with $\Lambda_{\rm
\tiny{flow}}$ the scale at which the flow between fixed points takes place and
$\Lambda_{\rm \tiny{QCD}}$ the confinement scale. We construct the dual
geometries explicitly and compute the spectrum of scalar bound states
(glueballs). We find a `universal' subset of states common to all the models.
We comment on the modifications of these models, and the corresponding
fine-tuning, required for a parametrically light `dilaton' state to be present.
We also comment on some aspects of these theories as probed by extended objects
such as strings and branes.Comment: 52 pages, 16 figures, 2 tables. v2 matches published versio
Jet substructure templates: data-driven QCD backgrounds for fat jet searches

QCD is often the dominant background to new physics searches for which jet substructure provides a useful handle. Due to the challenges associated with modeling this background, data-driven approaches are necessary. This paper presents a novel method for determining QCD predictions using templates — probability distribution functions for jet substructure properties as a function of kinematic inputs. Templates can be extracted from a control region and then used to compute background distributions in the signal region. Using Monte Carlo, we illustrate the procedure with two case studies and show that the template approach effectively models the relevant QCD background. This work strongly motivates the application of these techniques to LHC data
Hints of 5d Fixed Point Theories from Non-Abelian T-duality

In this paper we investigate the properties of the putative 5d fixed point
theory that should be dual, through the holographic correspondence, to the new
supersymmetric AdS(6) solution constructed in Lozano et al. This solution is
the result of a non-Abelian T-duality transformation on the known
supersymmetric AdS(6) solution of massive Type IIA. The analysis of the charge
quantization conditions seems to put constraints on the global properties of
the background, which, combined with the information extracted from considering
probe branes, suggests a 2-node quiver candidate for the dual CFT.Comment: v2, typos corrected, comments added, to appear in JHE
Proof of the Formula of Cachazo, He and Yuan for Yang-Mills Tree
  Amplitudes in Arbitrary Dimension

A proof is given of the formula, recently proposed by Cachazo, He and Yuan
(CHY) for gluon tree amplitudes in pure Yang-Mills theory in arbitrary
dimension. The approach is to first establish the corresponding result for
massless $\phi^3$ theory using the BCFW recurrence relation and then to extend
this to the gauge theory case. Additionally, it is shown that the scattering
equations introduced by CHY can be generalized to massive particles, enabling
the description of tree amplitudes for massive $\phi^3$ theory.Comment: 27 p
An alternative to anti-branes and O-planes?

In this paper we consider type IIA compactifications in the isotropic Z2 x Z2
orbifold with a flux-induced perturbative superpotential combined with
non-perturbative effects. Without requiring the presence of O-planes, and
simply having D6-branes as local sources, we demonstrate the existence of de
Sitter (dS) critical points, where the non-perturbative contributions to the
cosmological constant have negligible size. We note, however, that these
solutions generically have tachyons. By means of a more systematic search, we
are able to find two examples of stable dS vacua with no need for anti-branes
or O-planes, which, however, exhibit important non-perturbative corrections.
The examples that we present turn out to remain stable even after opening up
the fourteen non-isotropic moduli.Comment: 12 pages, 4 tables; v2: typos corrected, published versio
Generalized gravitational entropy of probe branes: flavor entanglement
  holographically

The notion of generalized gravitational entropy introduced by Lewkowycz and
Maldacena allows, via the AdS/CFT correspondence, to calculate CFT entanglement
entropies. We adapt the method to the case where flavor branes are present and
treated in the probe approximation. This allows to calculate the leading flavor
correction to the CFT entanglement entropy from the on-shell action of the
probe, while dealing with the backreaction is avoided entirely and from the
outset. As an application we give concise derivations for the contribution of
massless and massive flavor degrees of freedom to the entanglement entropy in
N=4 SYM theory.Comment: 24 pages, 1 figur
N=4 supersymmetric Yang-Mills theories in AdS_3

For all types of N=4 anti-de Sitter (AdS) supersymmetry in three dimensions,
we construct manifestly supersymmetric actions for Abelian vector multiplets
and explain how to extend the construction to the non-Abelian case. Manifestly
N=4 supersymmetric Yang-Mills (SYM) actions are explicitly given in the cases
of (2,2) and critical (4,0) AdS supersymmetries. The N=4 vector multiplets and
the corresponding actions are then reduced to (2,0) AdS superspace, in which
only N=2 supersymmetry is manifest. Using the off-shell structure of the N=4
vector multiplets, we provide complete N=4 SYM actions in (2,0) AdS superspace
for all types of N=4 AdS supersymmetry. In the case of (4,0) AdS supersymmetry,
which admits a Euclidean counterpart, the resulting N=2 action contains a
Chern-Simons term proportional to q/r, where r is the radius of AdS_3 and q is
the R-charge of a chiral scalar superfield. The R-charge is a linear
inhomogeneous function of X, an expectation value of the N=4 Cotton superfield.
Thus our results explain the mysterious structure of N=4 supersymmetric
Yang-Mills theories on S^3 discovered in arXiv:1401.7952. In the case of (3,1)
AdS supersymmetry, which has no Euclidean counterpart, the SYM action contains
both a Chern-Simons term and a chiral mass-like term. In the case of (2,2) AdS
supersymmetry, which admits a Euclidean counterpart, the SYM action has no
Chern-Simons and chiral mass-like terms.Comment: 45 pages; V3: minor corrections, version published in JHE
On the 6d origin of discrete additional data of 4d gauge theories

Starting with a choice of gauge algebras, specification of a 4d gauge theory
involves additional data, namely the gauge groups and the discrete theta
angles. Equivalently, one needs to specify the set of charges of allowed line
operators. In this note, we study how these additional data are represented in
6d, when the 4d theory in question is an N=4 super Yang-Mills theory or an N=2
class S theory. We will see that the Z_N symmetry of the so-called T_N theory
plays an important role. As a byproduct, we will find that the superconformal
index of class S theories can be refined so that it can give 2d q-deformed
Yang-Mills theory with different gauge groups associated to the same gauge
algebra.Comment: 18 pages; v2: minor correction
Supersymmetric geometries of IIA supergravity I

IIA supergravity backgrounds preserving one supersymmetry locally admit four
types of Killing spinors distinguished by the orbits of $Spin(9,1)$ on the
space of spinors. We solve the Killing spinor equations of IIA supergravity
with and without cosmological constant for Killing spinors representing two of
these orbits, with isotropy groups $Spin(7)$ and $Spin(7)\ltimes\mathbb{R}^8$.
In both cases, we identify the geometry of spacetime and express the fluxes in
terms of the geometry. We find that the geometric constraints of backgrounds
with a $Spin(7)\ltimes\mathbb{R}^8$ invariant Killing spinor are identical to
those found for heterotic backgrounds preserving one supersymmetry.Comment: 21 page
Exact results for the entanglement entropy and the energy radiated by a
  quark

We consider a spherical region with a heavy quark in the middle. We compute
the extra entanglement entropy due to the presence of a heavy quark both in
${\cal N}=4 $ Super Yang Mills and in the ${\cal N}=6$ Chern-Simons matter
theory (ABJM). This is done by relating the computation to the expectation
value of a circular Wilson loop and a stress tensor insertion. We also give an
exact expression for the Bremsstrahlung function that determines the energy
radiated by a quark in the ABJM theory.Comment: 23+12 pages, 8 figures. V2: references added. V3: references added.
  V4: small comments and references adde
Quantum corrections to scalar field dynamics in a slow-roll space-time

We consider the dynamics of a quantum scalar field in the background of a
slow-roll inflating Universe. We compute the one-loop quantum corrections to
the field and Friedmann equation of motion, in both a 1PI and a 2PI expansion,
to leading order in slow-roll. Generalizing the works of [1-3], we then solve
these equations to compute the effect on the primordial power spectrum, for the
case of a self-interacting inflaton and a self-interacting spectator field. We
find that for the inflaton the corrections are negligible due to the smallness
of the coupling constant despite the large IR enhancement of the loop
contributions. For a curvaton scenario, on the other hand, we find tension in
using the 1PI loop corrections, which may indicate that the quantum corrections
could be non-perturbatively large in this case, thus requiring resummation.Comment: 33 pages, 1 figure. Version published in JHE
Three-loop HTLpt thermodynamics at finite temperature and chemical
  potential

We calculate the three-loop thermodynamic potential of QCD at finite
temperature and chemical potential(s) using the hard-thermal-loop perturbation
theory (HTLpt) reorganization of finite temperature and density QCD. The
resulting analytic thermodynamic potential allows us to compute the pressure,
energy density, and entropy density of the quark-gluon plasma. Using these we
calculate the trace anomaly, speed of sound, and second-, fourth-, and
sixth-order quark number susceptibilities. For all observables considered we
find good agreement between our three-loop HTLpt calculations and available
lattice data for temperatures above approximately 300 MeV.Comment: 48 pages, 14 figures; v2 - published versio
On the Classification of 6D SCFTs and Generalized ADE Orbifolds

We study (1,0) and (2,0) 6D superconformal field theories (SCFTs) that can be
constructed in F-theory. Quite surprisingly, all of them involve an orbifold
singularity C^2 / G with G a discrete subgroup of U(2). When G is a subgroup of
SU(2), all discrete subgroups are allowed, and this leads to the familiar ADE
classification of (2,0) SCFTs. For more general U(2) subgroups, the allowed
possibilities for G are not arbitrary and are given by certain generalizations
of the A- and D-series. These theories should be viewed as the minimal 6D
SCFTs. We obtain all other SCFTs by bringing in a number of E-string theories
and/or decorating curves in the base by non-minimal gauge algebras. In this way
we obtain a vast number of new 6D SCFTs, and we conjecture that our
construction provides a full list.Comment: v3: 47 pages, 3 figures, clarifications added, typos corrected,
  references added, and Mathematica file update
Constraining gravity using entanglement in AdS/CFT

We investigate constraints imposed by entanglement on gravity in the context
of holography. First, by demanding that relative entropy is positive and using
the Ryu-Takayanagi entropy functional, we find certain constraints at a
nonlinear level for the dual gravity. Second, by considering Gauss-Bonnet
gravity, we show that for a class of small perturbations around the vacuum
state, the positivity of the two point function of the field theory stress
tensor guarantees the positivity of the relative entropy. Further, if we impose
that the entangling surface closes off smoothly in the bulk interior, we find
restrictions on the coupling constant in Gauss-Bonnet gravity. We also give an
example of an anisotropic excited state in an unstable phase with broken
conformal invariance which leads to a negative relative entropy.Comment: 36 pages, 3 figures, v4: fig 1 modifie
Generalized Black Holes in Three-dimensional Spacetime

Three-dimensional spacetime with a negative cosmological constant has proven
to be a remarkably fertile ground for the study of gravity and higher spin
fields. The theory is topological and, since there are no propagating field
degrees of freedom, the asymptotic symmetries become all the more crucial. For
pure (2+1) gravity they consist of two copies of the Virasoro algebra. There
exists a black hole which may be endowed with all the corresponding charges.
The pure (2+1) gravity theory may be reformulated in terms of two Chern-Simons
connections for sl(2,R). An immediate generalization containing gravity and a
finite number of higher spin fields may be achieved by replacing sl(2,R) by
sl(3,R) or, more generally, by sl(N,R). The asymptotic symmetries are then two
copies of the so-called W_N algebra, which contains the Virasoro algebra as a
subalgebra. The question then arises as to whether there exists a
generalization of the standard pure gravity (2+1) black hole which would be
endowed with all the W_N charges. The original pioneering proposal of a black
hole along this line for N=3 turns out, as shown in this paper, to actually
belong to the so called "diagonal embedding" of sl(2,R) in sl(3,R), and it is
therefore endowed with charges of lower rather than higher spins. In
contradistinction, we exhibit herein the most general black hole which belongs
to the "principal embedding". It is endowed with higher spin charges, and
possesses two copies of W_3 as its asymptotic symmetries. The most general
diagonal embedding black hole is studied in detail as well, in a way in which
its lower spin charges are clearly displayed. The extension to N>3 is also
discussed. A general formula for the entropy of a generalized black hole is
obtained in terms of the on-shell holonomies.Comment: 54 pages, 1 table, 1 figur
Left-Right Symmetry and the Charged Higgs Bosons at the LHC

The charged Higgs boson sector of the Minimal Manifest Left-Right Symmetric
model (MLRSM) is investigated in the context of LHC discovery search for new
physics beyond Standard Model. We discuss and summarise the main processes
within MLRSM where heavy charged Higgs bosons can be produced at the LHC. We
explore the scenarios where the amplified signals due to relatively light
charged scalars dominate against heavy neutral $Z_2$ and charged gauge $W_2$ as
well as heavy neutral Higgs bosons signals which are dumped due to large vacuum
expectation value $v_R$ of the right-handed scalar triplet. In particular,
production processes with one and two doubly charged Higgs bosons are
considered. We further incorporate the decays of those scalars leading to multi
lepton signals at the LHC. Branching ratios for heavy neutrino $N_R$, $W_2$ and
$Z_2$ decay into charged Higgs bosons are calculated. These effects are
substantial enough and cannot be neglected. The tri- and four-lepton final
states for different benchmark points are analysed. Kinematic cuts are chosen
in order to strength the leptonic signals and decrease the Standard Model (SM)
background. The results are presented using di-lepton invariant mass and
lepton-lepton separation distributions for the same sign (SSDL) and opposite
sign (OSDL) di-leptons as well as the charge asymmetry are also discussed. We
have found that for considered MLRSM processes tri-lepton and four-lepton
signals are most important for their detection when compared to the SM
background. Both of the signals can be detected at 14 TeV collisions at the LHC
with integrated luminosity at the level of $300 fb^{-1}$ with doubly charged
Higgs bosons up to approximately 600 GeV. Finally, possible extra contribution
of the charged MLRSM scalar particles to the measured Higgs to di-photon
($H_0^0 \to \gamma \gamma$) decay is computed and pointed out.Comment: FCNC analysis is incorporated while fitting the scalar spectrum.
  Light doubly charged scalars are still compatible with FCNC. Accepted in
  JHEP. New References and figures are added. The fitted scalar spectrum is
  given in detail in appendi
Wilson loops and Riemann theta functions II

In this paper we extend and simplify previous results regarding the
computation of Euclidean Wilson loops in the context of the AdS/CFT
correspondence, or, equivalently, the problem of finding minimal area surfaces
in hyperbolic space (Euclidean AdS3). If the Wilson loop is given by a boundary
curve X(s) we define, using the integrable properties of the system, a family
of curves X(lambda,s) depending on a complex parameter lambda known as the
spectral parameter. This family has remarkable properties. As a function of
lambda, X(lambda,s) has cuts and therefore is appropriately defined on a
hyperelliptic Riemann surface, namely it determines the spectral curve of the
problem. Moreover, X(lambda,s) has an essential singularity at the origin
lambda=0. The coefficients of the expansion of X(lambda,s) around lambda=0,
when appropriately integrated along the curve give the area of the
corresponding minimal area surface.
  Furthermore we show that the same construction allows the computation of
certain surfaces with one or more boundaries corresponding to Wilson loop
correlators. We extend the area formula for that case and give some concrete
examples. As the main example we consider a surface ending on two concentric
circles and show how the boundary circles can be deformed by introducing extra
cuts in the spectral curve.Comment: LaTeX, 45 pages, 10 figures. v2: typos corrected, references adde
Some New Light-cone Time Dependent Solutions in Deformed pp-wave
  Backgrounds

Brane solutions in time \ light-cone time dependent backgrounds are of
interest in order to gain a deeper understanding of the physics associated with
cosmological and null singularities. In this paper, we report both brane
solutions and their bound states in light-cone time dependent pp wave-like
backgrounds. We show that the backgrounds our solutions live in are all
cosmologically singular (lightlike) at the classical level. A spacetime
supersymmetry analysis of the backgrounds reveals that they retain 1/8 of the
full type IIB supersymmetry
Integrability in conformally coupled gravity: Taub-NUT spacetimes and
  rotating black holes

We consider four dimensional stationary and axially symmetric spacetimes for
conformally coupled scalar-tensor theories. We show that, in analogy to the
Lewis-Papapetrou problem in General Relativity (GR), the theory at hand can be
recast in an analogous integrable form. We give the relevant rod formalism,
introduced by Weyl for vacuum GR, explicitly giving the rod structure of the
black hole of Bocharova et al. and Bekenstein (BBMB), in complete analogy to
the Schwarzschild solution. The additional scalar field is shown to play the
role of an extra Weyl potential. We then employ the Ernst method as a concrete
solution generating example to obtain the Taub-NUT version of the BBMB hairy
black hole, with or without a cosmological constant. We show that the anti-de
Sitter hyperbolic version of this solution is free of closed timelike curves
that plague usual Taub-NUT metrics, and thus consists of a rotating,
asymptotically locally anti-de Sitter black hole. This stationary solution has
no curvature singularities whatsoever in the conformal frame, and the NUT
charge is shown here to regularize the central curvature singularity of the
corresponding static black hole. Given our findings we discuss the anti-de
Sitter hyperbolic version of Taub-NUT in four dimensions, and show that the
curvature singularity of the NUT-less solution is now replaced by a neighboring
chronological singularity screened by horizons. We argue that the properties of
this rotating black hole are very similar to those of the rotating BTZ black
hole in three dimensions.Comment: 27 pages, 1 figur
BPS domain walls from backreacted orientifolds

Compactifications with D-brane and orientifold sources lead to standard
gauged supergravity theories if the sources are smeared over the internal
directions. It is therefore of interest to find how the solutions described by
the gauged supergravity are altered by properly localising the sources. In this
paper we analyse this for BPS domain wall solutions in the seven-dimensional
gauged supergravity obtained from an O6 toroidal orientifold compactification
in massive IIA supergravity. This is one of the simplest no-scale
supergravities that can be constructed and analysed in full detail. We find and
discuss the BPS domain walls both when the O6 planes are smeared and localised.
When the O6 planes are localised the domain wall solutions live in a warped
compactification. In order to get explicit expressions we also consider the
non-compact versions of the solutions for which the O6 planes have been traded
for D6 branes. Through T-duality we obtain partially localised solutions for
compactifications to four dimensions using O3 planes with 3-form fluxes.Comment: 23 pages, 1 figur
Rigid Supersymmetry on 5-dimensional Riemannian Manifolds and Contact
  Geometry

In this note we generalize the methods of [1][2][3] to 5-dimensional
Riemannian manifolds M. We study the relations between the geometry of M and
the number of solutions to a generalized Killing spinor equation obtained from
a 5-dimensional supergravity. The existence of 1 pair of solutions is related
to almost contact metric structures. We also discuss special cases related to
$M = S1 \times M4$, which leads to M being foliated by submanifolds with
special properties, such as Quaternion-Kahler. When there are 2 pairs of
solutions, the closure of the isometry sub-algebra generated by the solutions
requires M to be S3 or T3-fibration over a Riemann surface. 4 pairs of
solutions pin down the geometry of M to very few possibilities. Finally, we
propose a new supersymmetric theory for N = 1 vector multiplet on K-contact
manifold admitting solutions to the Killing spinor equation.Comment: 53 pages, v2: refs added, typos correction, v3: refs added, typos
  corrections and linguistic modifications in sec. 2 for readability, v4:
  Acknowledgement modifie
Comments on holographic star and the dual QGP

We study static AdS star in generic dimension. The dependence of the mass
limit to the bulk fermion mass is explored. In the bulk conformal limit, the
mass limit saturates at a value identical to the mass limit of a radiation star
or the AdS space filling with pure radiation. The temperature and entropy of
the degenerate AdS star in the bulk conformal limit is zero in contrast to the
radiation star. Holographically, the universal mass limit corresponds to the
upper limit of the deconfinement temperature in the dual gauge picture. The QGP
at this temperature is dual to the large black hole and the heat capacity is
positive. When the fermion mass increases, the mass limit falls into the range
of the small black holes. We found that even though the small black hole has
negative heat capacity, the AdS box allows possibilities that it remains in
thermal equilibrium with the radiation as long as the size of the black hole is
not smaller than a critical size. Consequently, the dual QGP with negative heat
capacity can be produced and remains stable thermodynamically at temperature
below a saturation temperature $T_{2}$. The QGP with negative heat capacity
produced at higher temperature will still condensate completely into a gas of
confined hadron.Comment: 30 pages, 9 figures, to be published in JHE