pinecone/core-2020-05-10-deduplication huggingface dataset:
Deformation Constraints on Solitons and D-branes

We derive a set of constraints on soliton solutions using geometric
deformations, and transformations by internal symmetries with space-dependent
parameters. We show that Derrick's theorem and a more complete set of
constraints due to Manton are special cases of these deformation constraints
(DC). We demonstrate also that known soliton solutions obey the DC, and extract
novel results by applying the constraints to systems of D-branes, taking into
account both Dirac-Born-Infeld and Wess-Zumino actions, and examining cases
with and without D-brane gauge fields. We also determine a relation with the
Hamiltonian constraint for gravitational systems, and discuss configurations of
finite extent, like Wilson lines.Comment: 43 pages, 1 figur
New N=1 dualities from orientifold transitions - Part II: String Theory

We present a string theoretical description, given in terms of branes and
orientifolds wrapping vanishing cycles, of the dual pairs of gauge theories
analyzed in 1210.7799. Based on the resulting construction we argue that the
duality that we observe in field theory is inherited from S-duality of type IIB
string theory. We analyze in detail the complex cone over the zeroth del Pezzo
surface and discuss an infinite family of orbifolds of flat space. For the del
Pezzo case we describe the system in terms of large volume objects, and show
that in this language the duality can be understood from the strongly coupled
behavior of the O7^+ plane, which we analyze using simple F-theory
considerations. For all cases we also give a different argument based on the
existence of appropriate torsional components of the 3-form flux lattice. Along
the way we clarify some aspects of the description of orientifolds in the
derived category of coherent sheaves, and in particular we discuss the
important role played by exotic orientifolds - ordinary orientifolds composed
with auto-equivalences of the category - when describing orientifolds of
ordinary quiver gauge theories.Comment: 51 pages, 16 figures; v2: minor changes, added references, published
  versio
The gradient flow coupling in the Schr\"odinger Functional

We study the perturbative behavior of the Yang-Mills gradient flow in the
Schr\"odinger Functional, both in the continuum and on the lattice. The energy
density of the flow field is used to define a running coupling at a scale given
by the size of the finite volume box. From our perturbative computation we
estimate the size of cutoff effects of this coupling to leading order in
perturbation theory. On a set of Nf=2 gauge field ensembles in a physical
volume of L ~ 0.4 fm we finally demonstrate the suitability of the coupling for
a precise continuum limit due to modest cutoff effects and high statistical
precision.Comment: LaTeX, 27 pages, 7 figures. Added section on gauge fixing. Typos
  corrected. Results unchange
Transformations of Spherical Blocks

We further explore the correspondence between N=2 supersymmetric SU(2) gauge
theory with four flavors on epsilon-deformed backgrounds and conformal field
theory, with an emphasis on the epsilon-expansion of the partition function
natural from a topological string theory point of view. Solving an appropriate
null vector decoupling equation in the semi-classical limit allows us to
express the instanton partition function as a series in quasi-modular forms of
the group Gamma(2), with the expected symmetry Weyl group of SO(8) semi-direct
S_3. In the presence of an elementary surface operator, this symmetry is
enhanced to an action of the affine Weyl group of SO(8) semi-direct S_4 on the
instanton partition function, as we demonstrate via the link between the null
vector decoupling equation and the quantum Painlev\'e VI equation.Comment: 31 pages, 1 figure; v2: typos corrected, references adde
N=1 dynamics with T_N theory

We study the dynamics of N=1 supersymmetric systems consisting of the
strongly-coupled superconformal theory T_N, SU(N) gauge groups, and fundamental
chiral multiplets. We demonstrate that such systems exhibit familiar phenomena
such as deformation of the vacuum moduli space, appearance of the dynamical
superpotential, and Coulomb branches with N=1 Seiberg-Witten curves. The
analysis requires a rather detailed knowledge of the chiral ring of the T_N
theory, which will also be discussed at length.Comment: 33 pages, 2 figures; v2:Published versio
Supergravity Solutions of Two M2 Branes

We present an exact analytic class of solutions for a system of two membranes
in eleven-dimensional supergravity. One brane in the system is completely
localized along the overall and relative transverse coordinates while the other
brane in the system is localized only along the overall transverse coordinates.
The membrane configuration preserves four supersymmetries. Moreover we find
some approximate solutions for the system of two membranes with a Bianchi space
as the overall transverse space to both membranes. All supergravity solutions
preserve 1/8 of the supersymmetry. Upon dimensional reduction, the solutions
provide intersecting configurations of three D-branes in type IIA supergravity.Comment: 17 pages, 5 figure
Heavy quark energy loss far from equilibrium in a strongly coupled
  collision

We compute and study the drag force acting on a heavy quark propagating
through the matter produced in the collision of two sheets of energy in a
strongly coupled gauge theory that can be analyzed holographically. Although
this matter is initially far from equilibrium, we find that the equilibrium
expression for heavy quark energy loss in a homogeneous strongly coupled plasma
with the same instantaneous energy density or pressure as that at the location
of the quark describes many qualitative features of our results. One
interesting exception is that there is a time delay after the initial collision
before the heavy quark energy loss becomes significant. At later times, once a
liquid plasma described by viscous hydrodynamics has formed, expressions based
upon assuming instantaneous homogeneity and equilibrium provide a
semi-quantitative description of our results - as long as the rapidity of the
heavy quark is not too large. For a heavy quark with large rapidity, the
gradients in the velocity of the hydrodynamic fluid result in qualitative
consequences for the 'drag' force acting on the quark. In certain
circumstances, the force required to drag the quark through the plasma can
point opposite to the velocity of the quark, meaning that the force that the
plasma exerts on a quark moving through it acts in the same direction as its
velocity. And, generically, the force includes a component perpendicular to the
direction of motion of the quark. Our results support a straightforward
approach to modeling the drag on, and energy loss of, heavy quarks with modest
rapidity in heavy ion collisions, both before and after the quark-gluon plasma
hydrodynamizes, and provide cautionary lessons at higher rapidity.Comment: 22 pages, 20 figure
Holographic anyonic superfluidity

Starting with a holographic construction for a fractional quantum Hall state
based on the D3-D7' system, we explore alternative quantization conditions for
the bulk gauge fields. This gives a description of a quantum Hall state with
various filling fractions. For a particular alternative quantization of the
bulk gauge fields, we obtain a holographic anyon fluid in a vanishing
background magnetic field. We show that this system is a superfluid, exhibiting
the relevant gapless excitation.Comment: 23 pages, 7 figures; v2: typos fixed, published version; v3: typo
  fixe
AdS black holes with arbitrary scalar coupling

A general class of axionic and electrically charged black holes for a
self-interacting scalar field nonminimally coupled to Einstein gravity with a
negative cosmological constant is presented. These solutions are the first
examples of black holes with an arbitrary nonminimal coupling $\xi$ in four
dimensions. Moreover, due to the presence of two three-forms fields, the
topology of the horizon of these black holes is planar. We discuss some
properties of these solutions electing particular values of the nonminimal
coupling parameter. A special case arises when $\xi=1/4$, for which the
gravitational field is confined in a region close to the event horizon. We also
show that these black holes emerge from stealth AdS configurations as the
axionic fields are switched on, and that they can be generated through a
Kerr-Schild transformation. Finally, in the appendix, we extend these results
to arbitrary dimension.Comment: 23 page
AdS Description of Induced Higher-Spin Gauge Theory

We study deformations of three-dimensional large N CFTs by double-trace
operators constructed from spin s single-trace operators of dimension \Delta.
These theories possess UV fixed points, and we calculate the change of the
3-sphere free energy \delta F= F_{UV}- F_{IR}. To describe the UV fixed point
using the dual AdS_4 space we modify the boundary conditions on the spin s
field in the bulk; this approach produces \delta F in agreement with the field
theory calculations. If the spin s operator is a conserved current, then the
fixed point is described by an induced parity invariant conformal spin s gauge
theory. The low spin examples are QED_3 (s=1) and the 3-d induced conformal
gravity (s=2). When the original CFT is that of N conformal complex scalar or
fermion fields, the U(N) singlet sector of the induced 3-d gauge theory is dual
to Vasiliev's theory in AdS_4 with alternate boundary conditions on the spin s
massless gauge field. We test this correspondence by calculating the leading
term in \delta F for large N. We show that the coefficient of (1/2)\log N in
\delta F is equal to the number of spin s-1 gauge parameters that act trivially
on the spin s gauge field. We discuss generalizations of these results to 3-d
gauge theories including Chern-Simons terms and to theories where s is
half-integer. We also argue that the Weyl anomaly a-coefficients of conformal
spin s theories in even dimensions d, such as that of the Weyl-squared gravity
in d=4, can be efficiently calculated using massless spin s fields in AdS_{d+1}
with alternate boundary conditions. Using this method we derive a simple
formula for the Weyl anomaly a-coefficients of the d=4 Fradkin-Tseytlin
conformal higher-spin gauge fields. Similarly, using alternate boundary
conditions in AdS_3 we reproduce the well-known central charge c=-26 of the bc
ghosts in 2-d gravity, as well as its higher-spin generalizations.Comment: 62 pages, 1 figure; v2 refs added, minor improvements; v3 refs added,
  minor improvement
Surface defects, the superconformal index and q-deformed Yang-Mills.

Recently a prescription to compute the four-dimensional   N  = 2 superconformal index in the presence of certain BPS surface defects has been given. These surface defects are labelled by symmetric representations of SU(N). In the present paper we give a prescription to compute the superconformal index in the presence of surface defects labelled by arbitrary representations of SU(N). Furthermore, we extend the dictionary between the   N =2superconformalSchur-indexandcorrelatorsofq-deformedYang-Millstoincorporate such surface defects
Dressing the Electron Star in a Holographic Superconductor

We construct new asymptotically AdS_4 solutions dual to 2+1 CFTs at finite
density and zero temperature by combining the ingredients of the electron star
and the holographic superconductor. The solutions, which we call "compact
electron stars", contain both a fermionic fluid and charged scalar hair in the
bulk. We show that the new solutions are thermodynamically favoured in the
region of parameter space where they exist. Along the boundary of this region,
we find evidence for a continuous phase transition between the holographic
superconductor and the compact star solution.Comment: 31 pages, 10 figures; added reference
Neutron electric dipole moment in CP violating BLMSSM

Considering the CP violating phases, we analyze the neutron electric dipole
moment (EDM) in a CP violating supersymmetric extension of the standard model
where baryon and lepton numbers are local gauge symmetries(BLMSSM). The
contributions from the one loop diagrams and the Weinberg operators are taken
into account. Adopting some assumptions on the relevant parameter space, we
give the numerical results analysis. The numerical results for neutron EDM can
reach $1.05\times 10^{-25}(e.cm)$, which is about the experimental upper limit
D-brane Bremsstrahlung

We study the dynamics of ultrarelativistic D-branes. The dominant phenomenon
is bremsstrahlung: mild acceleration induced by closed string interactions
triggers extremely rapid energy loss through radiation of massless closed
strings. After characterizing bremsstrahlung from a general k-dimensional
extended object in a D-dimensional spacetime, we incorporate effects specific
to D-branes, including velocity-dependent forces and open string pair creation.
We then show that dissipation due to bremsstrahlung can substantially alter the
dynamics in DBI inflation.Comment: 36 pages, 6 figure
Linear polarization of gluons and photons in unpolarized collider
  experiments

We study azimuthal asymmetries in heavy quark pair production in unpolarized
electron-proton and proton-proton collisions, where the asymmetries originate
from the linear polarization of gluons inside unpolarized hadrons. We provide
cross section expressions and study the maximal asymmetries allowed by
positivity, for both charm and bottom quark pair production. The upper bounds
on the asymmetries are shown to be very large depending on the transverse
momentum of the heavy quarks, which is promising especially for their
measurements at a possible future Electron-Ion Collider or a Large Hadron
electron Collider. We also study the analogous processes and asymmetries in
muon pair production as a means to probe linearly polarized photons inside
unpolarized protons. For increasing invariant mass of the muon pair the
asymmetries become very similar to the heavy quark pair ones. Finally, we
discuss the process dependence of the results that arises due to differences in
color flow and address the problem with factorization in case of proton-proton
collisions.Comment: 16 pages, 3 figure
Supersymmetry on curved spaces and superconformal anomalies

We study the consequences of unbroken rigid supersymmetry of four-dimensional
field theories placed on curved manifolds. We show that in Lorentzian signature
the background vector field coupling to the R-current is determined by the Weyl
tensor of the background metric. In Euclidean signature, the same holds if two
supercharges of opposite R-charge are preserved, otherwise the (anti-)self-dual
part of the vector field-strength is fixed by the Weyl tensor. As a result of
this relation, the trace and R-current anomalies of superconformal field
theories simplify, with the trace anomaly becoming purely topological. In
particular, in Lorentzian signature, or in the presence of two Euclidean
supercharges of opposite R-charge, supersymmetry of the background implies that
the term proportional to the central charge c vanishes, both in the trace and
R-current anomalies. This is equivalent to the vanishing of a superspace Weyl
invariant. We comment on the implications of our results for holography.Comment: 33 pages; v2: minor changes, references added; v3: typos corrected,
  minor improvements; v4: equations (5.9) and (5.10) of v3 correcte
Flat/AdS boundary conditions in three dimensional conformal gravity

We present the asymptotic analysis of 3D conformal gravity as a SO(3,2)
Chern-Simons gauge theory with Minkowskian (flat) and AdS boundary conditions.
We further extend these boundary conditions to the case where the Weyl mode and
the partial massless mode are allowed to fluctuate. The latter leads to loosing
one copy of the Virasoro algebra and the former to a u(1) current extension of
the asymptotic symmetry algebra and shifting the Virasoro central charge by
one. We also give a pedagogical canonical and asymptotic analysis of 3D pure
gravity as an ISO(2,1) Chern-Simons gauge theory with flat boundary conditions.Comment: 19 pages; v2: minor changes, to appear in JHE
A strong electroweak phase transition in the 2HDM after LHC8

The nature of the electroweak phase transition in two-Higgs-doublet models is
revisited in light of the recent LHC results. A scan over an extensive region
of their parameter space is performed, showing that a strongly first-order
phase transition favours a light neutral scalar with SM-like properties,
together with a heavy pseudo-scalar (m_A^0 > 400 GeV) and a mass hierarchy in
the scalar sector, m_H^+ < m_H^0 < m_A^0. We also investigate the h^0 -> gamma
gamma decay channel and find that an enhancement in the branching ratio is
allowed, and in some cases even preferred, when a strongly first-order phase
transition is required
Strong lensing constraints on bimetric massive gravity

We derive dynamical and gravitational lensing properties of local sources in
the Hassan-Rosen bimetric gravity theory. Observations of elliptical galaxies
rule out values of the effective length-scale of the theory, in units of the
Hubble radius, in the interval 10^-6 < lambda_g/r_H < 10^-3, unless the
proportionality constant between the metrics at the background level is far
from unity, in which case general relativity is effectively restored for local
sources. In order to have background solutions resembling the concordance
cosmological model, without fine-tuning of the parameters of the model, we are
restricted to the upper interval, or lambda_g/r_H ~ 1. Except for a limited
range of parameter values, the Hassan-Rosen theory is thus consistent with the
observed lensing and dynamical properties of elliptical galaxies.Comment: 24 pages, 2 figures. Matches version accepted for publication in JHE
Phenomenology of Light Fermionic Asymmetric Dark Matter

Asymmetric dark matter (ADM) has been an attractive possibility attempting to
explain the observed ratio of baryon to dark matter abundance in the universe.
While a bosonic ADM is constrained by the limits from existence of old neutron
stars, a fermionic ADM requires an additional light particle in order to
annihilate its symmetric component in the early universe. We revisit the
phenomenology of a minimal GeV scale fermionic ADM model including a light
scalar state. The current constraints on this scenario from cosmology, dark
matter direct detection, flavour physics and collider searches are investigated
in detail. We estimate the future reach on the model parameter space from
next-generation dark matter direct detection experiments, Higgs boson property
measurements and search for light scalars at the LHC, as well as the
determination of Higgs invisible branching ratio at the proposed ILC.Comment: 31 pages, 7 figures; v2: comments and references added, version as
  published in JHE
Chargino and neutralino production at the Large Hadron Collider in
  left-right supersymmetric models

We present a complete and extensive analysis of associated chargino and
neutralino production in the framework of a supersymmetric theory augmented by
left-right symmetry. This model provides additional gaugino and higgsino states
in both the neutral and charged sectors, thus potentially enhancing new physics
signals at the LHC. For a choice of benchmark scenarios, we calculate cross
sections for 7, 8 and 14 TeV. We then simulate events expected to be produced
at the LHC, and classify them according to the number of leptons in the final
state. We devise methods to reduce the background and compare the signals with
consistently simulated events for the Minimal Supersymmetric Standard Model. We
pinpoint promising scenarios where left-right symmetric supersymmetric signals
can be distinguished both from background and from the Minimal Supersymmetric
Standard Model events.Comment: 42 pages, 12 figures, 11 tables, version accepted by JHE
Cool horizons lead to information loss

There are two evidences for information loss during black hole evaporation:
(i) a pure state evolves to a mixed state and (ii) the map from the initial
state to final state is non-invertible. Any proposed resolution of the
information paradox must address both these issues. The firewall argument
focuses only on the first and this leads to order one deviations from the Unruh
vacuum for maximally entangled black holes. The nature of the argument does not
extend to black holes in pure states. It was shown by Avery, Puhm and the
author that requiring the initial state to final state map to be invertible
mandates structure at the horizon even for pure states. The proof works if
black holes can be formed in generic states and in this paper we show that this
is indeed the case. We also demonstrate how models proposed by Susskind,
Papadodimas et al. and Maldacena et al. end up making the initial to final
state map non-invertible and thus make the horizon "cool" at the cost of
unitarity.Comment: 22 pages + references, 4 figures. v2: References added, typos
  correcte
Analytic Solution of Bremsstrahlung TBA II: Turning on the Sphere Angle

We find an exact analytical solution of the Y-system describing a cusped
Wilson line in the planar limit of N=4 SYM. Our explicit solution describes
anomalous dimensions of this family of observables for any value of the `t
Hooft coupling and arbitrary R-charge L of the local operator inserted on the
cusp in a near-BPS limit. Our finding generalizes the previous results of one
of the authors & Sever and passes several nontrivial tests. First, for a
particular case L=0 we reproduce the predictions of localization techniques.
Second, we show that in the classical limit our result perfectly reproduces the
existing prediction from classical string theory. In addition, we made a
comparison with all existing weak coupling results and we found that our result
interpolates smoothly between these two very different regimes of AdS/CFT. As a
byproduct we found a generalization of the essential parts of the FiNLIE
construction for the gamma-deformed case and discuss our results in the
framework of the novel ${\bf P}\mu$-formulation of the spectral problem.Comment: 39 pages, 4 figures; v2: minor corrections, references added; v3:
  typos fixed, references updated; v4: typos fixe
Massive planar and non-planar double box integrals for light Nf
  contributions to gg->tt

We present the master integrals needed for the light fermionic two-loop
corrections to top quark pair production in the gluon fusion channel. Via the
method of differential equations we compute the results in terms of multiple
polylogarithms in a Laurent series about d=4, where d is the space-time
dimension. The most involved topology is a non-planar double box with one
internal mass. We employ the coproduct-augmented symbol calculus and show that
significant simplifications are possible for selected results using an
optimised set of multiple polylogarithms.Comment: 20 pages, 1 figure, 2 ancillary file