pinecone/core-2020-05-10-deduplication huggingface dataset:
New Sum Rules from Low Energy Compton Scattering on Arbitrary Spin
  Target

We derive two sum rules by studying the low energy Compton scattering on a
target of arbitrary (nonzero) spin j. In the first sum rule, we consider the
possibility that the intermediate state in the scattering can have spin |j \pm
1| and the same mass as the target. The second sum rule applies if the theory
at hand possesses intermediate narrow resonances with masses different from the
mass of the scatterer. These sum rules are generalizations of the
Gerasimov-Drell-Hearn-Weinberg sum rule. Along with the requirement of tree
level unitarity, they relate different low energy couplings in the theory.
Using these sum rules, we show that in certain cases the gyromagnetic ratio can
differ from the "natural" value g=2, even at tree level, without spoiling
perturbative unitarity. These sum rules can be used as constraints applicable
to all supergravity and higher-spin theories that contain particles charged
under some U(1) gauge field. In particular, applied to four dimensional N=8
supergravity in a spontaneously broken phase, these sum rules suggest that for
the theory to have a good ultraviolet behavior, additional massive states need
to be present, such as those coming from the embedding of the N=8 supergravity
in type II superstring theory. We also discuss the possible implications of the
sum rules for QCD in the large-N_c limit.Comment: 18 pages, v2: discussion on black hole contribution is included,
  references added; v3: extended discussion in introduction, version to appear
  in JHE
A Note on Supersymmetric Type II Solutions of Lifshitz Type

We discuss a class of supersymmetric type II non-relativistic solutions with
exact or asymptotic scale invariance. As already emerged from previous
investigations, we find a clear correspondence between anisotropic
d-dimensional vacua and relativistic solutions in (d + 1)-dimensions. We will
show that supersymmetric four-dimensional Poincare' invariant backgrounds in
type IIB can descend to analogous solutions with anisotropic scaling in t and
(x, y). This result can be applied to scale invariant theories, domain walls
interpolating between four-dimensional Lifshitz vacua and more general
solutions with only asymptotic or approximate scaling behaviour.Comment: Added subsection on hyperscaling violation example
Super Weyl invariance: BPS equations from heterotic worldsheets

It is well-known that the beta functions on a string worldsheet correspond to
the target space equations of motion, e.g. the Einstein equations. We show that
the BPS equations, i.e. the conditions of vanishing supersymmetry variations of
the space-time fermions, can be directly derived from the worldsheet. To this
end we consider the RNS-formulation of the heterotic string with (2,0)
supersymmetry, which describes a complex torsion target space that supports a
holomorphic vector bundle. After a detailed account of its quantization and
renormalization, we establish that the cancellation of the Weyl anomaly
combined with (2,0) finiteness implies the heterotic BPS conditions: At the one
loop level the geometry is required to be conformally balanced and the gauge
background has to satisfy the Hermitean Yang-Mills equations.Comment: 1+31 pages LaTeX, 5 figures; final version, discussion relation Weyl
  invariance and (2,0) finiteness extended, typos correcte
Precision SU(3) lattice thermodynamics for a large temperature range

We present the equation of state (pressure, trace anomaly, energy density and entropy density) of the SU(3) gauge theory from lattice field theory in an unprecedented precision and temperature range. We control both finite size and cut-off effects. The studied temperature window (0.7…1000T c ) stretches from the glueball dominated system into the perturbative regime, which allows us to discuss the range of validity of these approaches. We also determine the preferred renormalization scale of the Hard Thermal Loop scheme and we fit the unknown g 6 order perturbative coefficient at extreme high temperatures T > 100T c . We furthermore quantify the nonperturbative contribution to the trace anomaly using a simple functional form. Our high precision data allows one to have a complete theoretical description of the equation of state from T = 0 all the way to the phase transition, through the transition region into the perturbative regime up to the Stefan-Boltzmann limit. We will discuss this description, too
3D N=6 Gauged Supergravity: Admissible Gauge Groups, Vacua and RG Flows

We study N=6 gauged supergravity in three dimensions with scalar manifolds
$\frac{SU(4,k)}{S(U(4)\times U(k))}$ for $k=1,2,3,4$ in great details. We
classify some admissible non-compact gauge groups which can be consistently
gauged and preserve all supersymmetries. We give the explicit form of the
embedding tensors for these gauge groups as well as study their scalar
potentials on the full scalar manifold for each value of $k=1,2,3,4$ along with
the corresponding vacua. Furthermore, the potentials for the compact gauge
groups, $SO(p)\times SO(6-p)\times SU(k)\times U(1)$ for $p=3,4,5,6$,
identified previously in the literature are partially studied on a submanifold
of the full scalar manifold. This submanifold is invariant under a certain
subgroup of the corresponding gauge group. We find a number of supersymmetric
AdS vacua in the case of compact gauge groups. We then consider holographic RG
flow solutions in the compact gauge groups $SO(6)\times SU(4)\times U(1)$ and
$SO(4)\times SO(2)\times SU(4)\times U(1)$ for the k=4 case. The solutions
involving one active scalar can be found analytically and describe operator
flows driven by a relevant operator of dimension 3/2. For non-compact gauge
groups, we find all types of vacua namely AdS, Minkowski and dS, but there is
no possibility of RG flows in the AdS/CFT sense for all gauge groups considered
here.Comment: 43 pages, no figures references added, typoes corrected and more
  information adde
Probes on D3-D7 Quark-Gluon Plasmas

We study the holographic dual model of quenched flavors immersed in a
quark-gluon plasma with massless dynamical quarks in the Veneziano limit. This
is modeled by embedding a probe D7 brane in a background where the backreaction
of massless D7 branes has been taken into account. The background, and hence
the effects, are perturbative in the Veneziano parameter N_f/N_c, therefore
giving small shifts of all magnitudes like the constituent mass, the quark
condensate, and several transport coefficients. We provide qualitative results
for the effect of flavor degrees of freedom on the probes. For example, the
meson melting temperature is enhanced, while the screening length is
diminished. The drag force is also enhanced.Comment: 31 pages, 17 figure
A Comment on Holographic Luttinger Theorem

Robustness of the Luttinger theorem for fermionic liquids is examined in
holography. The statement of the Luttinger theorem, the equality between the
fermion charge density and the volume enclosed by the Fermi surface, can be
mapped to a Gauss's law in the gravity dual, a la Sachdev. We show that various
deformations in the gravity dual, such as inclusion of magnetic fields, a
parity-violating theta-term, dilatonic deformations, and higher-derivative
corrections, do not violate the holographic derivation of the Luttinger
theorem, as long as the theory is in a confining phase. Therefore a robustness
of the theorem is found for strongly correlated fermions coupled with strongly
coupled sectors which admit gravity duals. On the other hand, in the deconfined
phase, we also show that the deficit appearing in the Luttinger theorem is
again universal. It measures a total deficit which measures the charge of the
deconfined ("fractionalized") fermions, independent of the deformation
parameters.Comment: 19 pages. v2: references and minor comments adde
Wavefunctions and the Point of E8 in F-theory

In F-theory GUTs interactions between fields are typically localised at
points of enhanced symmetry in the internal dimensions implying that the
coefficient of the associated operator can be studied using a local
wavefunctions overlap calculation. Some F-theory SU(5) GUT theories may exhibit
a maximum symmetry enhancement at a point to E8, and in this case all the
operators of the theory can be associated to the same point. We take initial
steps towards the study of operators in such theories. We calculate
wavefunctions and their overlaps around a general point of enhancement and
establish constraints on the local form of the fluxes. We then apply the
general results to a simple model at a point of E8 enhancement and calculate
some example operators such as Yukawa couplings and dimension-five couplings
that can lead to proton decay.Comment: 46 page
Warped Vacuum Statistics

We consider the effect of warping on the distribution of type IIB flux vacua
constructed with Calabi-Yau orientifolds. We derive an analytical form of the
distribution that incorporates warping and find close agreement with the
results of a Monte Carlo enumeration of vacua. Compared with calculations that
neglect warping, we find that for any finite volume compactification, the
density of vacua is highly diluted in close proximity to the conifold point,
with a steep drop-off within a critical distance.Comment: 30 pages, 2 figure
AKSZ construction from reduction data

We discuss a general procedure to encode the reduction of the target space
geometry into AKSZ sigma models. This is done by considering the AKSZ
construction with target the BFV model for constrained graded symplectic
manifolds. We investigate the relation between this sigma model and the one
with the reduced structure. We also discuss several examples in dimension two
and three when the symmetries come from Lie group actions and systematically
recover models already proposed in the literature.Comment: 42 page
(1,0) superconformal theories in six dimensions and Killing spinor
  equations

We solve the Killing spinor equations of 6-dimensional (1,0) superconformal
theories in all cases. In particular, we derive the conditions on the fields
imposed by the Killing spinor equations and demonstrate that these depend on
the isotropy group of the Killing spinors. We focus on the models proposed by
Samtleben et al in \cite{ssw} and find that there are solutions preserving 1,2,
4 and 8 supersymmetries. We also explore the solutions which preserve 4
supersymmetries and find that many models admit string and 3-brane solitons as
expected from the M-brane intersection rules. The string solitons are smooth
regulated by the moduli of instanton configurations.Comment: 26 page
Impact-parameter dependent nuclear parton distribution functions: EPS09s
  and EKS98s and their applications in nuclear hard processes

We determine the spatial (impact parameter) dependence of nuclear parton
distribution functions (nPDFs) using the $A$-dependence of the spatially
independent (averaged) global fits EPS09 and EKS98. We work under the
assumption that the spatial dependence can be formulated as a power series of
the nuclear thickness functions $T_A$. To reproduce the $A$-dependence over the
entire $x$ range we need terms up to $[T_A]^4$. As an outcome, we release two
sets, EPS09s (LO, NLO, error sets) and EKS98s, of spatially dependent nPDFs for
public use. We also discuss the implementation of these into the existing
calculations. With our results, the centrality dependence of nuclear
hard-process observables can be studied consistently with the globally fitted
nPDFs for the first time. As an application, we first calculate the LO nuclear
modification factor $R^{1jet}_{AA}$ for primary partonic-jet production in
different centrality classes in Au+Au collisions at RHIC and Pb+Pb collisions
at LHC. Also the corresponding central-to-peripheral ratios $R_{CP}^{1jet}$ are
studied. We also calculate the LO and NLO nuclear modification factors for
single inclusive neutral pion production, $R_{dAu}^{\pi^0}$, at mid- and
forward rapidities in different centrality classes in d+Au collisions at RHIC.
In particular, we show that our results are compatible with the PHENIX
mid-rapidity data within the overall normalization uncertainties given by the
experiment. Finally, we show our predictions for the corresponding
modifications $R_{pPb}^{\pi^0}$ in the forthcoming p+Pb collisions at LHC.Comment: 36 page
Contact Manifolds, Contact Instantons, and Twistor Geometry

Recently, Kallen and Zabzine computed the partition function of a twisted
supersymmetric Yang-Mills theory on the five-dimensional sphere using
localisation techniques. Key to their construction is a five-dimensional
generalisation of the instanton equation to which they refer as the contact
instanton equation. Subject of this article is the twistor construction of this
equation when formulated on K-contact manifolds and the discussion of its
integrability properties. We also present certain extensions to higher
dimensions and supersymmetric generalisations.Comment: v3: 28 pages, clarifications and references added, version to appear
  in JHE
Superconformal Yang-Mills quantum mechanics and Calogero model with
  OSp(N|2,R) symmetry

In spacetime dimension two, pure Yang-Mills possesses no physical degrees of
freedom, and consequently it admits a supersymmetric extension to couple to an
arbitrary number, N say, of Majorana-Weyl gauginos. This results in (N,0) super
Yang-Mills. Further, its dimensional reduction to mechanics doubles the number
of supersymmetries, from N to N+N, to include conformal supercharges, and leads
to a superconformal Yang-Mills quantum mechanics with symmetry group
OSp(N|2,R). We comment on its connection to AdS_2 \times S^{N-1} and reduction
to a supersymmetric Calogero model.Comment: 1+28 pages, no figure; Refs added. To appear in JHE
Spectral weight in holographic scaling geometries

We compute the low energy spectral density of transverse currents in theories
with holographic duals that exhibit an emergent scaling symmetry characterized
by dynamical critical exponent $z$ and hyperscaling violation exponent
$\theta$. For any finite $z$ and $\theta$, the low energy spectral density is
exponentially small at nonzero momentum. This indicates that any nonzero
momentum low energy excitations of putative hidden Fermi surfaces are not
visible in the classical bulk limit. We furthermore show that if the limit $z
\to \infty$ is taken with the ratio $\eta = - \theta/z > 0$ held fixed, then
the resulting theory is locally quantum critical with an entropy density that
vanishes at low temperatures as $s \sim T^\eta$. In these cases the low energy
spectral weight at nonzero momentum is not exponentially suppressed, possibly
indicating a more fermionic nature of these theories.Comment: 1+19 pages, no figures. v2 references adde
Higher spin fermions in the BTZ black hole

Recently it has been shown that the wave equations of bosonic higher spin
fields in the BTZ background can be solved exactly. In this work we extend this
analysis to fermionic higher spin fields. We solve the wave equations for
arbitrary half-integer spin fields in the BTZ black hole background and obtain
exact expressions for their quasinormal modes. These quasinormal modes are
shown to agree precisely with the poles of the corresponding two point function
in the dual conformal field theory as predicted by the AdS/CFT correspondence.
We also obtain an expression for the 1-loop determinant in terms of the
quasinormal modes and show it agrees with that obtained by integrating the heat
kernel found by group theoretic methods.Comment: 29 page
The gravity duals of SO/USp superconformal quivers

We study the gravity duals of SO/USp superconformal quiver gauge theories
realized by M5-branes wrapping on a Riemann surface ("G-curve") together with a
Z_2-quotient. When the G-curve has no punctures, the gravity solutions are
classified by the genus g of the G-curve and the torsion part of the four-form
flux G_4. We also find that there is an interesting relation between anomaly
contributions from two mysterious theories: T_{SO(2N)} theory with SO(2N)^3
flavor symmetry and \tilde{T}_{SO(2N)} theory with SO(2N) x USp(2N-2)^2 flavor
symmetry. The dual gravity solutions for various SO/USp-type tails are also
studied.Comment: 27 pages, 13 figures; v2 minor corrections, typos corrected, Figure
  13 replaced, references adde
PGB pair production at LHC and ILC as a probe of the topcolor-assisted
  technicolor models

The topcolor-assisted technicolor (TC2) model predicts some light pseudo
goldstone bosons (PGBs), which may be accessible at the LHC or ILC. In this
work we study the pair productions of the charged or neutral PGBs at the LHC
and ILC. For the productions at the LHC we consider the processes proceeding
through gluon-gluon fusion and quark-antiquark annihilation, while for the
productions at the ILC we consider both the electron-positron collision and the
photon-photon collision. We find that in a large part of parameter space the
production cross sections at both colliders can be quite large compared with
the low standard model backgrounds. Therefore, in future experiments these
productions may be detectable and allow for probing TC2 model.Comment: 26 pages, 16 figures. slight changes in the text; notations for
  curves changed; references adde
Lifshitz/Schr\"odinger D-p-branes and dynamical exponents

We extend our earlier study of special double limits of `boosted' $AdS_5$
black hole solutions to include all black D$p$-branes of type II strings. We
find that Lifshitz solutions can be obtained in generality, with varied
dynamical exponents, by employing these limits. We then study such double
limits for `boosted' D$p$-brane bubble solutions and find that the resulting
non-relativistic solutions instead describe Schr\"odinger like spacetimes,
having varied dynamical exponents. We get a simple map between these Lifshitz &
Schr\"odinger solutions and a relationship between two types of dynamical
exponents. We also discuss about the singularities of the Lifshitz solutions
and an intriguing thermodynamic duality.Comment: 20 pages; 3 figures; v3: similar to JHE
Vanishing Minors in the Neutrino Mass Matrix from Abelian Gauge
  Symmetries

Augmenting the Standard Model by three right-handed neutrinos allows for an
anomaly-free gauge group extension G_max = U(1)_(B-L) x U(1)_(L_e-L_mu) x
U(1)_(L_mu-L_tau). While simple U(1) subgroups of G_max have already been
discussed in the context of approximate flavor symmetries, we show how two-zero
textures in the right-handed neutrino Majorana mass matrix can be enforced by
the flavor symmetry, which is spontaneously broken very economically by singlet
scalars. These zeros lead to two vanishing minors in the low-energy neutrino
mass matrix after the seesaw mechanism. This study may provide a new testing
ground for a zero-texture approach: the different classes of two-zero textures
with almost identical neutrino oscillation phenomenology can in principle be
distinguished by their different Z' interactions at colliders.Comment: 12 pages; Extended and clarified discussion; comments on finetuning
  in the textures; matches published versio
Subtracted Geometry From Harrison Transformations

We consider the rotating non-extremal black hole of N=2 D=4 STU supergravity
carrying three magnetic charges and one electric charge. We show that its
subtracted geometry is obtained by applying a specific SO(4,4) Harrison
transformation on the black hole. As previously noted, the resulting subtracted
geometry is a solution of the N=2 S=T=U supergravity.Comment: 11 pages main text; total 24 pages; Latex file; v2 typos corrected +
  ref added; v3 results significantly strengthened, changes in section 3.1 and
  appendix C, version to appear in JHE
Cold Electroweak Baryogenesis in the Two Higgs-Doublet Model

We perform the first investigation of cold electroweak baryogenesis in the
two Higgs-doublet model (2HDM). The electroweak symmetry breaking transition is
assumed to occur through a spinodal instability from a super-cooled initial
state. We consider the creation of net Chern-Simons number, which through the
axial anomaly is equivalent to baryon number. CP-violation is explicit in the
scalar potential, but only in combination with P-violation is it possible for
an asymmetry to be generated. This is introduced through the leading C- and
P-breaking, but CP-invariant, term expected to arise upon integrating out the
fermions in the theory. We perform real-time lattice simulations of the
transition, and find the coefficient of this term required for successful
bayogenesis.Comment: 20 pages, 18 figure
Holographic Entanglement Entropy in Insulator/Superconductor Transition

We investigate the behaviors of entanglement entropy in the holographical
insulator/superconductor phase transition. We calculate the holographic
entanglement entropy for two kinds of geometry configurations in a completely
back-reacted gravitational background describing the insulator/superconductor
phase transition. The non-monotonic behavior of the entanglement entropy is
found in this system. In the belt geometry case, there exist four phases
characterized by the chemical potential and belt width.Comment: v2: 18 pages, 12 figures, references and figures added, minor
  corrections mad
LHC Discovery Potential for Non-Standard Higgs Bosons in the 3b Channel

In a variety of well motivated models, such as two Higgs Doublet Models
(2HDMs) and the Minimal Supersymmetric Standard Model (MSSM), there are neutral
Higgs bosons that have significantly enhanced couplings to b-quarks and tau
leptons in comparison to those of the SM Higgs. These so called non-standard
Higgs bosons could be copiously produced at the LHC in association with b
quarks, and subsequently decay into b-quark pairs. However, this production
channel suffers from large irreducible QCD backgrounds. We propose a new search
strategy for non-standard neutral Higgs bosons at the 7 TeV LHC in the 3b's
final state topology. We perform a simulation of the signal and backgrounds,
using state of the art tools and methods for different sets of selection cuts,
and conclude that neutral Higgs bosons with couplings to b-quarks of about 0.3
or larger, and masses up to 400 GeV, could be seen with a luminosity of 30
fb^{-1}. In the case of the MSSM we also discuss the complementarity between
the 3b channel and the inclusive tau pair channel in exploring the
supersymmetric parameter space.Comment: 14 pages, 3 figures, 4 tables, references added, published versio
Anomalous Breaking of Anisotropic Scaling Symmetry in the Quantum
  Lifshitz Model

In this note we investigate the anomalous breaking of anisotropic scaling
symmetry in a non-relativistic field theory with dynamical exponent z=2. On
general grounds, one can show that there exist two possible "central charges"
which characterize the breaking of scale invariance. Using heat kernel methods,
we compute these two central charges in the quantum Lifshitz model, a free
field theory which is second order in time and fourth order in spatial
derivatives. We find that one of the two central charges vanishes.
Interestingly, this is also true for strongly coupled non-relativistic field
theories with a geometric dual described by a metric and a massive vector
field.Comment: 26 pages; major revision (results were unaffected), published versio