pinecone/core-2020-05-10-deduplication huggingface dataset:
Supermembrane interaction with dynamical D=4 N=1 supergravity.
  Superfield Lagrangian description and spacetime equations of motion

We obtain the complete set of equations of motion for the interacting system
of supermembrane and dynamical D=4 N = 1 supergravity by varying its complete
superfield action and writing the resulting superfield equations in the special
gauge where the supermembrane Goldstone field is set to zero. We solve the
equations for auxiliary fields and discuss the effect of dynamical generation
of cosmological constant in the Einstein equation of interacting system and its
renormalization due to some regular contributions from supermembrane. These two
effects (discussed in late 70th and 80th, in the bosonic perspective and in the
supergravity literature) result in that, generically, the cosmological constant
has different values in the branches of the spacetime separated by the
supermembrane worldvolume.Comment: 23 pages, no figures. V2 two references added, 24 page
Supersymmetric AdS vacua and separation of scales

The moduli space of the supersymmetric massive IIA AdS4xS2(B4) vacua, where
S2(B4) is a two-sphere bundle over a four-dimensional Kaehler-Einstein base B4,
includes three independent parameters which can be thought of as corresponding
to the sizes of AdS4, B4 and the S2 fiber. It might therefore be expected that
these vacua do not suffer from the absence of scale separation. We show that
the independence of the geometric moduli survives flux quantization. However,
we uncover an attractor behavior whereby all sizes flow to equality in some
neighborhood of spacetime independently of the initial conditions set by the
parameters of the solution. This is further confirmed by the study of the ratio
of internal to external scalar curvatures. We also show that the asymptotic
Kaluza-Klein spectrum of a ten-dimensional massive scalar is governed by a
scale of the order of the AdS4 radius. Furthermore we point out that the
curvature ratio in supersymmetric IIA AdS4 vacua with rigid SU(3) structure is
of order one, indicating the absence of scale separation in this large class of
vacua.Comment: 21 pages, 2 figures; v2 typos correcte
Graviton Vertices and the Mapping of Anomalous Correlators to Momentum
  Space for a General Conformal Field Theory

We investigate the mapping of conformal correlators and of their anomalies
from configuration to momentum space for general dimensions, focusing on the
anomalous correlators $TOO$, $TVV$ - involving the energy-momentum tensor $(T)$
with a vector $(V)$ or a scalar operator ($O$) - and the 3-graviton vertex
$TTT$. We compute the $TOO$, $TVV$ and $TTT$ one-loop vertex functions in
dimensional regularization for free field theories involving conformal scalar,
fermion and vector fields. Since there are only one or two independent tensor
structures solving all the conformal Ward identities for the $TOO$ or $TVV$
vertex functions respectively, and three independent tensor structures for the
$TTT$ vertex, and the coefficients of these tensors are known for free fields,
it is possible to identify the corresponding tensors in momentum space from the
computation of the correlators for free fields. This works in general $d$
dimensions for $TOO$ and $TVV$ correlators, but only in 4 dimensions for $TTT$,
since vector fields are conformal only in $d=4$. In this way the general
solution of the Ward identities including anomalous ones for these correlators
in (Euclidean) position space, found by Osborn and Petkou is mapped to the
ordinary diagrammatic one in momentum space. We give simplified expressions of
all these correlators in configuration space which are explicitly Fourier
integrable and provide a diagrammatic interpretation of all the contact terms
arising when two or more of the points coincide. We discuss how the anomalies
arise in each approach [...]Comment: 57 pages, 7 figures. Refs adde
Null Energy Condition violations in bimetric gravity

We consider the effective stress-energy tensors for the foreground and
background sectors in ghost-free bimetric gravity. By considering the
symmetries of the theory, we show that the foreground and background null
energy conditions (NECs) are strongly anti-correlated. In particular, the NECs
can only be simultaneously fulfilled when they saturate, corresponding to
foreground and background cosmological constants. In all other situations,
either the foreground or the background is subject to a NEC-violating
contribution to the total stress-energy.Comment: v1: 16 pages; v2: 2 references adde
Postcards from oases in the desert: phenomenology of SUSY with
  intermediate scales

The presence of new matter fields charged under the Standard Model gauge
group at intermediate scales below the Grand Unification scale modifies the
renormalization group evolution of the gauge couplings. This can in turn
significantly change the running of the Minimal Supersymmetric Standard Model
parameters, in particular the gaugino and the scalar masses. In the absence of
new large Yukawa couplings we can parameterise all the intermediate scale
models in terms of only two parameters controlling the size of the unified
gauge coupling. As a consequence of the modified running, the low energy
spectrum can be strongly affected with interesting phenomenological
consequences. In particular, we show that scalar over gaugino mass ratios tend
to increase and the regions of the parameter space with neutralino Dark Matter
compatible with cosmological observations get drastically modified. Moreover,
we discuss some observables that can be used to test the intermediate scale
physics at the LHC in a wide class of models.Comment: 24 pages, 16 figure
Anomalous Couplings in Double Higgs Production

The process of gluon-initiated double Higgs production is sensitive to
non-linear interactions of the Higgs boson. In the context of the Standard
Model, studies of this process focused on the extraction of the Higgs trilinear
coupling. In a general parametrization of New Physics effects, however, an even
more interesting interaction that can be tested through this channel is the
(ttbar hh) coupling. This interaction vanishes in the Standard Model and is a
genuine signature of theories in which the Higgs boson emerges from a
strongly-interacting sector. In this paper we perform a model-independent
estimate of the LHC potential to detect anomalous Higgs couplings in
gluon-fusion double Higgs production. We find that while the sensitivity to the
trilinear is poor, the perspectives of measuring the new (ttbar hh) coupling
are rather promising.Comment: 22 pages, 9 figures. v2: plots of Figs.8 and 9 redone to include
  experimental uncertainty on the Higgs couplings, references adde
Higgs Production in a Warped Extra Dimension

Measurements of the Higgs-boson production cross section at the LHC are an
important tool for studying electroweak symmetry breaking at the quantum level,
since the main production mechanism gg-->h is loop-suppressed in the Standard
Model (SM). Higgs production in extra-dimensional extensions of the SM is
sensitive to the Kaluza-Klein (KK) excitations of the quarks, which can be
exchanged as virtual particles in the loop. In the context of the minimal
Randall-Sundrum (RS) model with bulk fields and a brane-localized Higgs sector,
we derive closed analytical expressions for the gluon-gluon fusion process,
finding that the effect of the infinite tower of virtual KK states can be
described in terms of a simple function of the fundamental (5D) Yukawa
matrices. Given a specific RS model, this will allow one to easily constrain
the parameter space, once a Higgs signal has been established. We explain that
discrepancies between existing calculations of Higgs production in RS models
are related to the non-commutativity of two limits: taking the number of KK
states to infinity and removing the regulator on the Higgs-boson profile, which
is required in an intermediate step to make the relevant overlap integrals well
defined. Even though the one-loop gg-->h amplitude is finite in RS scenarios
with a brane-localized Higgs sector, it is important to introduce a consistent
ultraviolet regulator in order to obtain the correct result.Comment: 27 pages, 3 figures; discussion in Sections 2 and 7 improved and
  extended, version accepted for publication in JHE
Multi-Centered Black Hole Flows

We describe the systematical construction of the first order formalism for
multi-centered black holes with flat three dimensional base-space, within the
so-called $T^{3}$ model of N=2, D=4 ungauged Maxwell-Einstein supergravity. The
three possible flow classes (BPS, composite non-BPS and almost-BPS) are
analyzed in detail, and various solutions, such as single-centered (static or
under-rotating) and all known multi-centered black holes, are recovered in this
unified framework. We also consider the possibility of obtaining new solutions.
The almost-BPS class is proved to split into two general sub-classes,
corresponding to a positive or negative value of the duality-invariant
polynomial for the total charge; the well known almost BPS system is shown to
be a particular solution of the second sub-class.Comment: 17 pages,no figure
General Neutralino NLSPs at the Early LHC

Gauge mediated supersymmetry breaking (GMSB) is a theoretically
well-motivated framework with rich and varied collider phenomenology. In this
paper, we study the Tevatron limits and LHC discovery potential for a wide
class of GMSB scenarios in which the next-to-lightest superpartner (NLSP) is a
promptly-decaying neutralino. These scenarios give rise to signatures involving
hard photons, $W$'s, $Z$'s, jets and/or higgses, plus missing energy. In order
to characterize these signatures, we define a small number of minimal spectra,
in the context of General Gauge Mediation, which are parameterized by the mass
of the NLSP and the gluino. Using these minimal spectra, we determine the most
promising discovery channels for general neutralino NLSPs. We find that the
2010 dataset can already cover new ground with strong production for all NLSP
types. With the upcoming 2011-2012 dataset, we find that the LHC will also have
sensitivity to direct electroweak production of neutralino NLSPs.Comment: 26 page
Diboson-Jets and the Search for Resonant Zh Production

New particles at the TeV-scale may have sizeable decay rates into boosted
Higgs bosons or other heavy scalars. Here, we investigate the possibility of
identifying such processes when the Higgs/scalar subsequently decays into a
pair of W bosons, constituting a highly distinctive "diboson-jet." These can
appear as a simple dilepton (plus MET) configuration, as a two-prong jet with
an embedded lepton, or as a four-prong jet. We study jet substructure methods
to discriminate these objects from their dominant backgrounds. We then
demonstrate the use of these techniques in the search for a heavy spin-one Z'
boson, such as may arise from strong dynamics or an extended gauge sector,
utilizing the decay chain Z' -> Zh -> Z(WW^(*)). We find that modes with
multiple boosted hadronic Zs and Ws tend to offer the best prospects for the
highest accessible masses. For 100/fb luminosity at the 14 TeV LHC, Z' decays
into a standard 125 GeV Higgs can be observed with 5-sigma significance for
masses of 1.5-2.5 TeV for a range of models. For a 200 GeV Higgs (requiring
nonstandard couplings, such as fermiophobic), the reach may improve to up to
2.5-3.0 TeV.Comment: 23 pages plus appendices, 9 figure
Same-Sign Tetra-Leptons from Type II Seesaw

The type II seesaw mechanism introduces a hypercharged Higgs triplet to
explain the observed neutrino masses and mixing. Among three triplet
components, the doubly charged Higgs boson can be the lightest and decay mainly
to same-sign di-leptons. Furthermore, the heavier singly charged or neutral
Higgs boson produces a doubly charged Higgs boson through its fast gauge decay.
This leads to a novel signature of same-sign tetra-leptons resulting from a
pair production of same-sign doubly charged Higgs bosons caused by the nearly
degenerate neutral scalar mixing which can be sizable for an appropriate choice
of the model parameters. After studying production cross-sections for the
same-sign tetra-lepton signal in the parameter space of the mass splitting
among triplet components and the triplet vacuum expectation value, we provide a
LHC analysis of the same-sign tetra-lepton signal for a benchmark point chosen
to maximize the event number.Comment: 18 pages, 7 figures, Comment on constraints from LFV processes added,
  version published in JHE
Off-diagonal Flavour Susceptibilities from AdS/CFT

We study flavour susceptibilities in the ${\cal N}=4$ SU(N) super Yang-Mills
plasma coupled to two quark flavours at strong coupling and large $N$ by means
of its gravity dual. The off-diagonal susceptibility is 1/N-suppressed and we
compute it as a one-loop effect on the gravity side. Contrary to naive
extrapolation from perturbative results, it attains a finite value in the
infinite-coupling limit. Moreover, its parametric form is independent of
whether or not meson bound states exist in the plasma. We conclude that caution
must be exercised when drawing conclusions about the QCD plasma from lattice
calculations of quark susceptibilities.Comment: 4 page
Non-perturbative gauge/gravity correspondence in N=2 theories

We derive the exact supergravity profile for the twisted scalar field emitted
by a system of fractional D3 branes at a Z2 orbifold singularity supporting N=2
quiver gauge theories with unitary groups and bifundamental matter. At the
perturbative level this twisted field is "dual" to the gauge coupling but it is
corrected non-perturbatively by an infinite tower of fractional D-instantons.
The explicit microscopic description allows to derive the gravity profile from
disk amplitudes computing the emission rate of the twisted scalar field in
terms of chiral correlators in the dual gauge theory. We compute these quantum
correlators using multi-instanton localization techniques and/or Seiberg-Witten
analysis. Finally, we discuss a non-perturbative relation between the twisted
scalar and the effective coupling of the gauge theory for some simple choices
of the brane set ups.Comment: 42 pages. 3 figures, PDFLaTe
On the Temperature Dependence of the Shear Viscosity and Holography

We examine the structure of the shear viscosity to entropy density ratio
eta/s in holographic theories of gravity coupled to a scalar field, in the
presence of higher derivative corrections. Thanks to a non-trivial scalar field
profile, eta/s in this setup generically runs as a function of temperature. In
particular, its temperature behavior is dictated by the shape of the scalar
potential and of the scalar couplings to the higher derivative terms. We
consider a number of dilatonic setups, but focus mostly on phenomenological
models that are QCD-like. We determine the geometric conditions needed to
identify local and global minima for eta/s as a function of temperature, which
translate to restrictions on the signs and ranges of the higher derivative
couplings. Finally, such restrictions lead to an holographic argument for the
existence of a global minimum for eta/s in these models, at or above the
deconfinement transition.Comment: references adde
Renormalization group approach to matrix models via noncommutative space

We develop a new renormalization group approach to the large-N limit of
matrix models. It has been proposed that a procedure, in which a matrix model
of size (N-1) \times (N-1) is obtained by integrating out one row and column of
an N \times N matrix model, can be regarded as a renormalization group and that
its fixed point reveals critical behavior in the large-N limit. We instead
utilize the fuzzy sphere structure based on which we construct a new map
(renormalization group) from N \times N matrix model to that of rank N-1. Our
renormalization group has great advantage of being a nice analog of the
standard renormalization group in field theory. It is naturally endowed with
the concept of high/low energy, and consequently it is in a sense local and
admits derivative expansions in the space of matrices. In construction we also
find that our renormalization in general generates multi-trace operators, and
that nonplanar diagrams yield a nonlocal operation on a matrix, whose action is
to transport the matrix to the antipode on the sphere. Furthermore the
noncommutativity of the fuzzy sphere is renormalized in our formalism. We then
analyze our renormalization group equation, and Gaussian and nontrivial fixed
points are found. We further clarify how to read off scaling dimensions from
our renormalization group equation. Finally the critical exponent of the model
of two-dimensional gravity based on our formalism is examined.Comment: 1+42 pages, 4 figure
Deformations of Lifshitz holography with the Gauss-Bonnet term in
  ($n+1$) dimensions

We investigate deformations of Gauss-Bonnet-Lifshitz holography in $(n+1)$
dimensional spacetime. Marginally relevant operators are dynamically generated
by a momentum scale $\Lambda \sim 0$ and correspond to slightly deformed
Gauss-Bonnet-Lifshitz spacetimes via a holographic picture. To admit
(non-trivial) sub-leading orders of the asymptotic solution for the marginal
mode, we find that the value of the dynamical critical exponent $z$ is
restricted by $z= n-1-2(n-2) \tilde{\alpha}$, where $\tilde{\alpha}$ is the
(rescaled) Gauss-Bonnet coupling constant. The generic black hole solution,
which is characterized by the horizon flux of the vector field and
$\tilde{\alpha}$, is obtained in the bulk, and we explore its thermodynamic
properties for various values of $n$ and $\tilde{\alpha}$.Comment: 40 pages, 13 figure
Strong Signatures of Right-Handed Compositeness

Right-handed light quarks could be significantly composite, yet compatible
with experimental searches at the LHC and precision tests on Standard Model
couplings. In these scenarios, that are motivated by flavor physics, one
expects large cross sections for the production of new resonances coupled to
light quarks. We study experimental strong signatures of right-handed
compositeness at the LHC, and constrain the parameter space of these models
with recent results by ATLAS and CMS. We show that the LHC sensitivity could be
significantly improved if dedicated searches were performed, in particular in
multi-jet signals.Comment: 37 pages, 24 figures, version 2 updated to JHEP 08 (2013) 00
The muon anomalous magnetic moment in the Randall-Sundrum model

We calculate the anomalous magnetic moment of the muon in the minimal
Randall-Sundrum model with standard model fields in five-dimensional (5D)
warped space and a brane-localized Higgs. We use a fully 5D framework to
compute the one-loop matching coefficients of the effective theory at the
electroweak scale. The extra contribution to the anomalous magnetic moment from
the model-independent gauge-boson exchange contributions \Delta a_\mu is
approximately 8.8*10^-11 (1TeV/T)^2, where 1/T denotes the location of the TeV
brane in conformal coordinates, and is related to the mass of the lowest gauge
boson KK excitation, which is roughly 2.5T. The result constitutes the first
complete determination of the gauge-boson contribution to g-2 and is robust
against the variation of the bulk fermion masses and 5D Yukawa coupling. We
also determine the strongly model-parameter dependent effect of Higgs-exchange
diagrams.Comment: 73 pages, 9 figures (V2: extended discussion of Higgs contributions
  and effects of wrong-chirality Higgs couplings added, typos corrected,
  references added, matches version published on JHEP
Entanglement entropy in higher derivative holography

We consider holographic entanglement entropy in higher derivative gravity
theories. Recently Lewkowycz and Maldacena arXiv:1304.4926 have provided a
method to derive the equations for the entangling surface from first
principles. We use this method to compute the entangling surface in four
derivative gravity. Certain interesting differences compared to the two
derivative case are pointed out. For Gauss-Bonnet gravity, we show that in the
regime where this method is applicable, the resulting equations coincide with
proposals in the literature as well as with what follows from considerations of
the stress tensor on the entangling surface. Finally we demonstrate that the
area functional in Gauss-Bonnet holography arises as a counterterm needed to
make the Euclidean action free of power law divergences.Comment: 24 pages, 1 figure. v3: typos corrected, published versio
Schrodinger Sigma Models and Jordanian Twists

We proceed to study the integrable structures of two-dimensional non-linear
sigma models defined on three-dimensional Schrodinger spacetimes. We show that
anisotropic Lax pairs are equivalent with isotropic Lax pairs with flat
conserved currents under non-local gauge transformations. Then a quite
non-trivial realization of the undeformed Yangian symmetry Y(sl(2)) is revealed
after an appropriate gauge fixing, which is determined by comparing the gauge
transformation to a quantum Jordanian twist. As a result, an exotic symmetry
found in arXiv:1209.4147 may be interpreted as a Jordanian deformation of
Y(sl(2)).Comment: 40 pages, 2 figures, LaTeX, typos corrected, references added,
  further clarificatio
Diagonal Limit for Conformal Blocks in d Dimensions

Conformal blocks in any number of dimensions depend on two variables z, zbar.
Here we study their restrictions to the special "diagonal" kinematics z = zbar,
previously found useful as a starting point for the conformal bootstrap
analysis. We show that conformal blocks on the diagonal satisfy ordinary
differential equations, third-order for spin zero and fourth-order for the
general case. These ODEs determine the blocks uniquely and lead to an efficient
numerical evaluation algorithm. For equal external operator dimensions, we find
closed-form solutions in terms of finite sums of 3F2 functions.Comment: 21 pages; v2: misprints in Eqs. 2.17 and 4.9 corrected; v3: misprints
  in A.5 and A.6 correcte
A non Supersymmetric SO(10) Grand Unified Model for All the Physics
  below $M_{GUT}$

We present a renormalizable non supersymmetric Grand Unified SO(10) model
which, at the price of a large fine tuning, is compatible with all compelling
phenomenological requirements below the unification scale and thus realizes a
minimal extension of the SM, unified in SO(10) and describing all known physics
below $M_{GUT}$. These requirements include coupling unification at a large
enough scale to be compatible with the bounds on proton decay; a Yukawa sector
in agreement with all the data on quark and lepton masses and mixings and with
leptogenesis as the origin of the baryon asymmetry of the Universe; an axion
arising from the Higgs sector of the model, suitable to solve the strong CP
problem and to account for the observed amount of Dark Matter. The above
constraints imposed by the data are very stringent and single out a particular
breaking chain with the Pati-Salam group at an intermediate scale
$M_I\sim10^{11}$ GeV.Comment: references added, minor changes in the text, version to appear in
  JHE
Extended Conformal Symmetry and Recursion Formulae for Nekrasov
  Partition Function

We derive an infinite set of recursion formulae for Nekrasov instanton
partition function for linear quiver U(N) supersymmetric gauge theories in 4D.
They have a structure of a deformed version of W_{1+\infty} algebra which is
called SH^c algebra (or degenerate double affine Hecke algebra) in the
literature. The algebra contains W_N algebra with general central charge
defined by a parameter \beta, which gives the $\Omega$ background in Nekrasov's
analysis. Some parts of the formulae are identified with the conformal Ward
identity for the conformal block function of Toda field theory.Comment: 21 pages, 3 figures; v2: minor modifications, typos corrected,
  references added; v3: references added, typos corrected; v4: major revision
  of section 6, to be published in JHE