pinecone/core-2020-05-10-deduplication huggingface dataset:
Charged Lepton Flavour Violation and Neutrinoless Double Beta Decay in
  Left-Right Symmetric Models with Type I+II Seesaw

We study the new physics contributions to neutrinoless double beta decay
($0\nu\beta \beta$) half-life and lepton flavour violation (LFV) amplitude
within the framework of the minimal left-right symmetric model (MLRSM).
Considering all possible new physics contributions to $0\nu\beta \beta$ and
charged lepton flavour violation $\mu \rightarrow e \gamma, \mu \rightarrow 3e$
in MLRSM, we constrain the parameter space of the model from the requirement of
satisfying existing experimental bounds. Assuming the breaking scale of the
left-right symmetry to be $\mathcal{O}(1)$ TeV accessible at ongoing and near
future collider experiments, we consider the most general type I+II seesaw
mechanism for the origin of tiny neutrino masses. Choosing the relative
contribution of the type II seesaw term allows us to calculate the right handed
neutrino mass matrix as well as Dirac neutrino mass matrix as a function of the
model parameters, required for the calculation of $0\nu\beta \beta$ and LFV
amplitudes. We show that such a general type I+II seesaw structure results in
more allowed parameter space compared to individual type I or type II seesaw
cases considered in earlier works. In particular, we show that the doubly
charged scalar masses $M_{\Delta}$ are allowed to be smaller than the heaviest
right handed neutrino mass $M_N$ from the present experimental bounds in these
scenarios which is in contrast to earlier results with individual type I or
type II seesaw showing $M_{\Delta} > M_N$.Comment: 23 pages and 21 figures. minor revision, to appear in JHEP. arXiv
  admin note: text overlap with arXiv:1509.0180
The non-linear coupled spin 2 - spin 3 Cotton equation in three
  dimensions

In the context of three-dimensional conformal higher spin theory we derive,
in the frame field formulation, the full non-linear spin 3 Cotton equation
coupled to spin 2. This is done by solving the corresponding Chern-Simons gauge
theory system of equations, that is, using $F=0$ to eliminate all auxiliary
fields and thus expressing the Cotton equation in terms of just the spin 3
frame field and spin 2 covariant derivatives and tensors (Schouten). In this
derivation we neglect the spin 4 and higher spin sectors and approximate the
star product commutator by a Poisson bracket. The resulting spin 3 Cotton
equation is complicated but can be related to linearized versions in the metric
formulation obtained previously by other authors. The expected symmetry (spin 3
"translation", "Lorentz" and "dilatation") properties are verified for Cotton
and other relevant tensors but some perhaps unexpected features emerge in the
process, in particular in relation to the non-linear equations. We discuss the
structure of this non-linear spin 3 Cotton equation but its explicit form is
only presented here, in an exact but not completely refined version, in
appended files obtained by computer algebra methods. Both the frame field and
metric formulations are provided.Comment: 45 pages, 2 ancillary files, v.2 references and comments on higher
  spin invariant metric adde
High-temperature asymptotics of supersymmetric partition functions

We study the supersymmetric partition function of 4d supersymmetric gauge
theories with a U(1) R-symmetry on Euclidean $S^3\times S_\beta^1$, with $S^3$
the unit-radius squashed three-sphere, and $\beta$ the circumference of the
circle. For superconformal theories, this partition function coincides (up to a
Casimir energy factor) with the 4d superconformal index.
  The partition function can be computed exactly using supersymmetric
localization of the gauge theory path-integral. It takes the form of an
elliptic hypergeometric integral, which may be viewed as a matrix-integral over
the moduli space of the holonomies of the gauge fields around $S_\beta^1$. At
high temperatures ($\beta\to 0$, corresponding to the hyperbolic limit of the
elliptic hypergeometric integral) we obtain from the matrix-integral a quantum
effective potential for the holonomies. The effective potential is proportional
to the temperature. Therefore the high-temperature limit further localizes the
matrix-integral to the locus of the minima of the potential. If the effective
potential is positive semi-definite, the leading high-temperature asymptotics
of the partition function is given by the formula of Di Pietro and Komargodski,
and the subleading asymptotics is connected to the Coulomb branch dynamics on
$R^3\times S^1$. In theories where the effective potential is not positive
semi-definite, the Di Pietro-Komargodski formula needs to be modified. In
particular, this modification occurs in the SU(2) theory of
Intriligator-Seiberg-Shenker, and the SO(N) theory of Brodie-Cho-Intriligator,
both believed to exhibit "misleading" anomaly matchings, and both believed to
yield interacting superconformal field theories with $c<a$.
  Two new simple tests for dualities between 4d supersymmetric gauge theories
emerge as byproducts of our analysis.Comment: 54+10 pages; 9 figures. v5: minor improvements, and added references;
  the discussion of the IR fixed point of the SO(n) BCI theory for n>10
  removed, as the mixing of its R-current with an emergent accidental symmetry
  was not treated properly. v6: minor improvement
ABJM on ellipsoid and topological strings

It is known that the large N expansion of the partition function in ABJM
theory on a three-sphere is completely determined by the topological string on
local Hirzebruch surface F_0. In this note, we investigate the ABJM partition
function on an ellipsoid, which has a conventional deformation parameter b.
Using 3d mirror symmetry, we find a remarkable relation between the ellipsoid
partition function for b^2=3 (or b^2=1/3) in ABJM theory at k=1 and a matrix
model for the topological string on another Calabi-Yau threefold, known as
local P^2. As in the case of b=1, we can compute the full large N expansion of
the partition function in this case. This is the first example of the complete
large N solution in ABJM theory on the squashed sphere. Using the obtained
results, we also analyze the supersymmetric Renyi entropy.Comment: 29 page
Thermodynamics of polarized relativistic matter

We give the free energy of equilibrium relativistic matter subject to
external gravitational and electromagnetic fields, to one-derivative order in
the gradients of the external fields. The free energy allows for a
straightforward derivation of bound currents and bound momenta in equilibrium.
At leading order, the energy-momentum tensor admits a simple expression in
terms of the polarization tensor. Beyond the leading order, electric and
magnetic polarization vectors are intrinsically ambiguous. The physical effects
of polarization, such as the correlation between the magneto-vortically induced
surface charge and the electro-vortically induced surface current, are not
ambiguous.Comment: 26 page
The Abelian Heterotic Conifold

We study heterotic supergravity on the conifold and its Z2 orbifold with
Abelian gauge fields and three-form flux. At large distances, these solutions
are locally Ricci-flat, have a magnetic flux through the two-sphere at infinity
as well as non-zero five-brane charge. For a given flux, our family of
solutions has three real parameters, the size of the pair of two spheres in the
IR and the dilaton zero mode. We present an explicit analytic solution for the
decoupled near horizon region where for a given flux, the size of the cycles is
frozen and the only parameter is the dilaton zero mode. We also present an
exactly solvable worldsheet CFT for this near horizon region. When one of the
two cycles has vanishing size, the near horizon region no longer exists but we
obtain a solution on the (unorbifolded) resolved conifold.Comment: 44 pages, 22 figure
Diphoton resonance confronts dark matter

As an interpretation of the 750 GeV diphoton excesses recently reported by
both ATLAS and CMS collaborations, we consider a simple extension of the
Standard Model with a Dirac fermion dark matter where a singlet complex scalar
field mediates between dark matter and SM particles via effective couplings to
SM gauge bosons and/or Higgs-portal. In this model, we can accommodate the
diphoton events through the direct and/or cascade decays of pseudo-scalar and
real scalar partners of the complex scalar field. We show that mono-jet
searches and gamma-ray observations are complementary in constraining the
region where the width of the diphoton resonance can be enhanced due to the
couplings of the resonance to dark matter and the correct relic density is
obtained. In the case of cascade decay of the resonance, the effective
couplings of singlet scalars can be smaller, but the model is still testable by
the future discrimination between single photon and photon-jet at the LHC as
well as the gamma-ray searches for the cascade annihilation of dark matter.Comment: 30 pages, 10 figures, To appear in Journal of High Energy Physic
Tunneling into Microstate Geometries: Quantum Effects Stop Gravitational
  Collapse

Collapsing shells form horizons, and when the curvature is small classical
general relativity is believed to describe this process arbitrarily well. On
the other hand, quantum information theory based (fuzzball/firewall) arguments
suggest the existence of some structure at the black hole horizon. This
structure can only form if classical general relativity stops being the correct
description of the collapsing shell before it reaches the horizon size. We
present strong evidence that classical general relativity can indeed break down
prematurely, by explicitly computing the quantum tunneling amplitude of a
collapsing shell of branes into smooth horizonless microstate geometries. We
show that the amplitude for tunneling into microstate geometries with a large
number of topologically non-trivial cycles is parametrically larger than
exp(-S), which indicates that the shell can tunnel into a horizonless
configuration long before the horizon has any chance to form. We also use this
technology to investigate the tunneling of M2 branes into LLM bubbling
geometries.Comment: 26 pages + appendi
Computing black hole partition functions from quasinormal modes

We propose a method of computing one-loop determinants in black hole
spacetimes (with emphasis on asymptotically anti-de Sitter black holes) that
may be used for numerics when completely-analytic results are unattainable. The
method utilizes the expression for one-loop determinants in terms of
quasinormal frequencies determined by Denef, Hartnoll and Sachdev in
\cite{Denef:2009kn}. A numerical evaluation must face the fact that the sum
over the quasinormal modes, indexed by momentum and overtone numbers, is
divergent. A necessary ingredient is then a regularization scheme to handle the
divergent contributions of individual fixed-momentum sectors to the partition
function. To this end, we formulate an effective two-dimensional problem in
which a natural refinement of standard heat kernel techniques can be used to
account for contributions to the partition function at fixed momentum. We test
our method in a concrete case by reproducing the scalar one-loop determinant in
the BTZ black hole background. We then discuss the application of such
techniques to more complicated spacetimes.Comment: 49 pages, 2 figures. v2: Minor clarifications added to abstract and
  main tex
Lepton Flavor Violating Non-Standard Interactions via Light Mediators

Non-Standard neutral current Interactions (NSIs) of neutrinos with matter can
alter the pattern of neutrino oscillation due to the coherent forward
scattering of neutrinos on the medium. This effect makes long-baseline neutrino
experiments such as NO$\nu$A and DUNE a sensitive probe of beyond standard
model (BSM) physics. We construct light mediator models that can give rise to
both lepton flavor conserving as well as Lepton Flavor Violating (LFV) neutral
current NSI. We outline the present phenomenological viability of these models
and future prospects to test them. We predict a lower bound on Br$(H\to \mu
\tau)$ in terms of the parameters that can be measured by DUNE and NO$\nu$A,
and show that the hint for $H\to \mu \tau$ in current LHC data can be
accommodated in our model. A large part of the parameter space of the model is
already constrained by the bounds on Br$(\tau \to Z^\prime \mu)$ and rare meson
decays and can in principle fully tested by improving these bounds.Comment: 19 pages, 1 figure; new bounds added in v
Large N Thirring Matter in Three Dimensions

In this paper we calculate properties of the three-dimensional system of N
species of fermions at zero temperature and finite chemical potential, with the
four-fermionic interaction of the Thirring type. We observe that this model
fits consistently into framework of the Landau Fermi liquid theory, and
possesses a non-trivial zeroth and first Landau parameters. Our result is
derived to all orders of the Thirring coupling constant and to the leading
order of the large-N expansion. In particular we solve for the exact
current-current correlation function, and show that it exhibits a singular
behavior at zero frequency and twice of the Fermi momentum
Brane webs in the presence of an $O5^-$-plane and 4d class S theories of
  type D

In this article we conjecture a relationship between 5d SCFT's, that can be
engineered by 5-brane webs in the presence of an $O5^-$-plane, and 4d class S
theories of type D. The specific relation is that compactification on a circle
of the former leads to the latter. We present evidence for this conjecture. One
piece of evidence, which is also an interesting application of this, is that it
suggests identifications between different class S theories. This can in turn
be tested by comparing their central charges.Comment: 30 pages, 18 figures; v2 minor revision, version published in JHE
The Arithmetic of Supersymmetric Vacua

We provide explicit formulas for the number of vacua of four-dimensional pure
N=1 super Yang-Mills theories on a circle, with any simple gauge algebra and
any choice of center and spectrum of line operators. These form a key
ingredient in the semi-classical calculation of the number of massive vacua of
N=1* gauge theories with gauge algebra su(n) compactified on a circle. Using
arithmetic, we express that number in an SL(2,Z) duality invariant manner. We
confirm our tally of massive vacua of the N=1* theories by a count of
inequivalent extrema of the exact superpotential. Furthermore, we compute a
formula for a refined index that distinguishes massive vacua according to their
unbroken discrete gauge group.Comment: 22 pages, 1 figur
Bootstrap bound for conformal multi-flavor QCD on lattice

The recent work by Iha et al shows an upper bound on mass anomalous dimension
$\gamma_m$ of multi-flavor massless QCD at the renormalization group fixed
point from the conformal bootstrap in $SU(N_F)_V$ symmetric conformal field
theories under the assumption that the fixed point is realizable with the
lattice regularization based on staggered fermions. We show that the almost
identical but slightly stronger bound applies to the regularization based on
Wilson fermions (or domain wall fermions) by studying the conformal bootstrap
in $SU(N_f)_L \times SU(N_f)_R$ symmetric conformal field theories. For
$N_f=8$, our bound implies $\gamma_m < 1.31$ to avoid dangerously irrelevant
operators that are not compatible with the lattice symmetry.Comment: 13 pages, 4 figures, v:2 published version with extra data adde
Simplified Models for Higgs Physics: Singlet Scalar and Vector-like
  Quark Phenomenology

Simplified models provide a useful tool to conduct the search and exploration
of physics beyond the Standard Model in a model-independent fashion. In this
work we consider the complementarity of indirect searches for new physics in
Higgs couplings and distributions with direct searches for new particles, using
a simplified model which includes a new singlet scalar resonance and
vector-like fermions that can mix with the SM top-quark. We fit this model to
the combined ATLAS and CMS 125 GeV Higgs production and coupling measurements
and other precision electroweak constraints, and explore in detail the effects
of the new matter content upon Higgs production and kinematics. We highlight
some novel features and decay modes of the top partner phenomenology, and
discuss prospects for Run II.Comment: 27 pages, 10 figure
Generalized entanglement entropy

We discuss two measures of entanglement in quantum field theory and their
holographic realizations. For field theories admitting a global symmetry, we
introduce a global symmetry entanglement entropy, associated with the
partitioning of the symmetry group. This quantity is proposed to be related to
the generalized holographic entanglement entropy defined via the partitioning
of the internal space of the bulk geometry. The second measure of quantum field
theory entanglement is the field space entanglement entropy, obtained by
integrating out a subset of the quantum fields. We argue that field space
entanglement entropy cannot be precisely realised geometrically in a
holographic dual. However, for holographic geometries with interior decoupling
regions, the differential entropy provides a close analogue to the field space
entanglement entropy. We derive generic descriptions of such inner throat
regions in terms of gravity coupled to massive scalars and show how the
differential entropy in the throat captures features of the field space
entanglement entropy.Comment: 40 pages, 3 figure
The Minimal SUSY $B-L$ Model: Simultaneous Wilson Lines and String
  Thresholds

In previous work, we presented a statistical scan over the soft supersymmetry
breaking parameters of the minimal SUSY $B-L$ model. For specificity of
calculation, unification of the gauge parameters was enforced by allowing the
two ${\mathbb Z}_{3}\times {\mathbb Z}_{3}$ Wilson lines to have mass scales
separated by approximately an order of magnitude. This introduced an additional
"left-right" sector below the unification scale. In this paper, for three
important reasons, we modify our previous analysis by demanding that the mass
scales of the two Wilson lines be simultaneous and equal to an "average
unification" mass $\left<M_{U}\right>$. The present analysis is 1) more
"natural" than the previous calculations, which were only valid in a very
specific region of the Calabi-Yau moduli space, 2) the theory is conceptually
simpler in that the left-right sector has been removed and 3) in the present
analysis the lack of gauge unification is due to threshold
effects--particularly heavy string thresholds, which we calculate statistically
in detail. As in our previous work, the theory is renormalization group evolved
from $\left<M_{U}\right>$ to the electroweak scale--being subjected,
sequentially, to the requirement of radiative $B-L$ and electroweak symmetry
breaking, the present experimental lower bounds on the $B-L$ vector boson and
sparticle masses, as well as the lightest neutral Higgs mass of $\sim$125 GeV.
The subspace of soft supersymmetry breaking masses that satisfies all such
constraints is presented and shown to be substantial.Comment: 45 pages, 19 figures. References added. Brief review of the B-L MSSM
  formalism in arXiv:1503.01473 included for clarity. Typographical errors
  correcte
UV Completions for Non-Critical Strings

Compactifications of the physical superstring to two dimensions provide a
general template for realizing 2D conformal field theories coupled to
worldsheet gravity, i.e. non-critical string theories. Motivated by this
observation, in this paper we determine the quasi-topological 8D theory which
governs the vacua of 2D N = (0,2) gauged linear sigma models (GLSMs) obtained
from compactifications of type I and heterotic strings on a Calabi-Yau
fourfold. We also determine the quasi-topological 6D theory governing the 2D
vacua of intersecting 7-branes in compactifications of F-theory on an
elliptically fibered Calabi-Yau fivefold, where matter fields and interaction
terms localize on lower-dimensional subspaces, i.e. defect operators. To cancel
anomalies / cancel tadpoles, these GLSMs must couple to additional chiral
sectors, which in some cases do not admit a known description in terms of a UV
GLSM. Additionally, we find that constructing an anomaly free spectrum can
sometimes break supersymmetry due to spacetime filling anti-branes. We also
study various canonical examples such as the standard embedding of heterotic
strings on a Calabi-Yau fourfold and F-theoretic "rigid clusters" with no local
deformation moduli of the elliptic fibration.Comment: v4: 102 pages, 2 figures, clarifications adde
BPS index and 4d N=2 superconformal field theories

We study the BPS index for the four-dimensional rank-one N=2 superconformal
field theories H_0, H_1, H_2, E_6, E_7, E_8. We consider compactifications of
the E-string theory on T^2 in which these theories arise as low energy limits.
Using this realization we clarify the general structure of the BPS index. The
index is characterized by two exponents and a sequence of invariants. We
determine the exponents and the first few invariants.Comment: 17 pages, v2: some clarifications and a reference added, published
  versio
Entanglement Conservation, ER=EPR, and a New Classical Area Theorem for
  Wormholes

We consider the question of entanglement conservation in the context of the
ER=EPR correspondence equating quantum entanglement with wormholes. In quantum
mechanics, the entanglement between a system and its complement is conserved
under unitary operations that act independently on each; ER=EPR suggests that
an analogous statement should hold for wormholes. We accordingly prove a new
area theorem in general relativity: for a collection of dynamical wormholes and
black holes in a spacetime satisfying the null curvature condition, the maximin
area for a subset of the horizons (giving the largest area attained by the
minimal cross section of the multi-wormhole throat separating the subset from
its complement) is invariant under classical time evolution along the outermost
apparent horizons. The evolution can be completely general, including horizon
mergers and the addition of classical matter satisfying the null energy
condition. This theorem is the gravitational dual of entanglement conservation
and thus constitutes an explicit characterization of the ER=EPR duality in the
classical limit.Comment: 16 pages, 2 figure
Higher spin entanglement entropy at finite temperature with chemical
  potential

It is generally believed that the semiclassical AdS$_3$ higher spin gravity
could be described by a two dimensional conformal field theory with
${\cal{W}}$-algebra symmetry in the large central charge limit. In this paper,
we study the single interval entanglement entropy on the torus in the CFT with
a ${\cW}_3$ deformation. More generally we develop the monodromy analysis to
compute the two-point function of the light operators under a thermal density
matrix with a ${\cW}_3$ chemical potential to the leading order.
Holographically we compute the probe action of the Wilson line in the
background of the spin-3 black hole with a chemical potential. We find exact
agreement.Comment: 31 pages; References added;Minor correction, published versio
Soft gluon resummation for associated gluino-gaugino production at the
  LHC

We perform a threshold resummation calculation for the associated production
of gluinos and gauginos at the LHC to the next-to-leading logarithmic accuracy.
Analytical results are presented for the process-dependent soft anomalous
dimension and the hard function. The resummed results are matched to a full
next-to-leading order calculation, for which we have generalised the previously
known results to the case of supersymmetric scenarios featuring non-universal
squark masses. Numerically, the next-to-leading logarithmic contributions
increase the total next-to-leading order cross section by 7 to 20% for central
scale choices and gluino masses of 3 to 6 TeV, respectively, and reduce its
scale dependence typically from up to $\pm12$% to below $\pm3$%.Comment: 32 pages, 10 figures, 3 tables, comments and references adde