pinecone/core-2020-05-10-deduplication huggingface dataset:
Quantization of anomaly coefficients in 6D $\mathcal{N}=(1,0)$
  supergravity

We obtain new constraints on the anomaly coefficients of 6D
$\mathcal{N}=(1,0)$ supergravity theories using local and global anomaly
cancellation conditions. We show how these constraints can be strengthened if
we assume that the theory is well-defined on any spin space-time with an
arbitrary gauge bundle. We distinguish the constraints depending on the gauge
algebra only from those depending on the global structure of the gauge group.
Our main constraint states that the coefficients of the anomaly polynomial for
the gauge group $G$ should be an element of $2 H^4(BG;\mathbb{Z}) \otimes
\Lambda_S$ where $\Lambda_S$ is the unimodular string charge lattice. We show
that the constraints in their strongest form are realized in F-theory
compactifications. In the process, we identify the cocharacter lattice, which
determines the global structure of the gauge group, within the homology lattice
of the compactification manifold.Comment: 42 pages. v3: Some clarifications, typos correcte
Local phase space and edge modes for diffeomorphism-invariant theories

We discuss an approach to characterizing local degrees of freedom of a
subregion in diffeomorphism-invariant theories using the extended phase space
of Donnelly and Freidel, [JHEP 2016 (2016) 102]. Such a characterization is
important for defining local observables and entanglement entropy in
gravitational theories. Traditional phase space constructions for subregions
are not invariant with respect to diffeomorphisms that act at the boundary. The
extended phase space remedies this problem by introducing edge mode fields at
the boundary whose transformations under diffeomorphisms render the extended
symplectic structure fully gauge invariant. In this work, we present a general
construction for the edge mode symplectic structure. We show that the new
fields satisfy a surface symmetry algebra generated by the Noether charges
associated with the edge mode fields. For surface-preserving symmetries, the
algebra is universal for all diffeomorphism-invariant theories, comprised of
diffeomorphisms of the boundary, $SL(2,\mathbb{R})$ transformations of the
normal plane, and, in some cases, normal shearing transformations. We also show
that if boundary conditions are chosen such that surface translations are
symmetries, the algebra acquires a central extension.Comment: 29+12 pages, references added and minor typos fixe
A multipole-expanded effective field theory for vortex ring-sound
  interactions

The low-energy dynamics of a zero temperature superfluid or of the
compressional modes of an ordinary fluid can be described by a simple effective
theory for a scalar field---the superfluid 'phase'. However, when vortex lines
are present, to describe all interactions in a local fashion one has to switch
to a magnetic-type dual two-form description, which comes with six degrees of
freedom (in place of one) and an associated gauge redundancy, and is thus
considerably more complicated. Here we show that, in the case of vortex $rings$
and for bulk modes that are much longer than the typical ring size, one can
perform a systematic multipole expansion of the effective action and recast it
into the simpler scalar field language. In a sense, in the presence of vortex
rings the non-single valuedness of the scalar can be hidden inside the rings,
and thus out of the reach of the multipole expansion. As an application of our
techniques, we compute by standard effective field theory methods the sound
emitted by an oscillating vortex ring.Comment: 30 pages; v2: added references, enlarged discussion, and a new
  appendi
Spin-$0^\pm$ portal induced Dark Matter

Standard model (SM) spin-zero singlets are constrained through their
di-Bosonic decay channels via an effective coupling induced by a vector-like
quark (VLQ) loop at the LHC for $\sqrt{s}$ = 13 TeV. These spin-zero resonances
are then considered as portals for scalar, vector or fermionic dark matter
particle interactions with SM gauge bosons. We find that the model is validated
with respect to the observations from LHC data and from cosmology, indirect and
direct detection experiments for an appreciable range of scalar, vector and
fermionic DM masses greater than 300 GeV and VLQ masses $\ge$ 400 GeV,
corresponding to the three choice of portal masses 270 GeV, 500 GeV and 750 GeV
respectively.Comment: 28 pages, 13 figures, and 2 table
Supersymmetric dS/CFT

We put forward new explicit realisations of dS/CFT that relate ${\cal N}=2$
supersymmetric Euclidean vector models with reversed spin-statistics in three
dimensions to specific supersymmetric Vasiliev theories in four-dimensional de
Sitter space. The partition function of the free supersymmetric vector model
deformed by a range of low spin deformations that preserve supersymmetry
appears to specify a well-defined wave function with asymptotic de Sitter
boundary conditions in the bulk. In particular we find the wave function is
globally peaked at undeformed de Sitter space, with a low amplitude for strong
deformations. This suggests that supersymmetric de Sitter space is stable in
higher-spin gravity and in particular free from ghosts. We speculate this is a
limiting case of the de Sitter realizations in exotic string theories.Comment: V2: references and comments added, typos corrected, version published
  in JHEP; 27 pages, 3 figures, 1 tabl
Radiative neutrino masses from order-4 CP symmetry

Generalized CP symmetry of order 4 (CP4) is surprisingly powerful in shaping
scalar and quark sectors of multi-Higgs models. Here, we extend this framework
to the neutrino sector. We build two simple Majorana neutrino mass models with
unbroken CP4, which are analogous to Ma's scotogenic model. Both models use
three Higgs doublets and two or three right-handed (RH) neutrinos. The minimal
CP4 symmetric scotogenic model uses only two RH neutrinos, leads to three
non-zero light neutrino masses, and contains a built-in mechanism to further
suppress them via phase alignment. With three RH neutrinos, one generates a
type I seesaw mass matrix of rank 1, which is then corrected by the same
scotogenic mechanism, naturally leading to two neutrino mass scales with mild
hierarchy. These minimal CP4-based constructions emerge as a primer for
introducing additional symmetry structures and exploring their phenomenological
consequences.Comment: 13 pages, 2 figures; v2: extra comments and references, matches the
  published versio
Massive charged-current coefficient functions in deep-inelastic
  scattering at NNLO and impact on strange-quark distributions

We present details on calculation of next-to-next-to-leading order QCD
corrections to massive charged-current coefficient functions in deep-inelastic
scattering. Especially we focus on the application to charm-quark production in
neutrino scattering on fixed target that can be measured via the dimuon final
state. We construct a fast interface to the calculation so for any parton
distributions the cross sections can be evaluated within milliseconds by using
the pre-generated interpolation grids. We discuss agreements of various
theoretical predicitons with the NuTeV and CCFR dimuon data and the impact of
the results on determination of the strange-quark distributions.Comment: version in JHE
Minimal area surfaces in AdS_{n+1} and Wilson loops

The AdS/CFT correspondence relates the expectation value of Wilson loops in
N=4 SYM to the area of minimal surfaces in AdS_5
  In this paper we consider minimal area surfaces in generic Euclidean
AdS_{n+1} using the Pohlmeyer reduction in a similar way as we did previously
in Euclidean AdS_3. As in that case, the main obstacle is to find the correct
parameterization of the curve in terms of a conformal parameter. Once that is
done, the boundary conditions for the Pohlmeyer fields are obtained in terms of
conformal invariants of the curve. After solving the Pohlmeyer equations, the
area can be expressed as a boundary integral involving a generalization of the
conformal arc-length, curvature and torsion of the curve. Furthermore, one can
introduce the \lambda-deformation symmetry of the contours by a simple change
in the conformal invariants. This determines the \lambda-deformed contours in
terms of the solution of a boundary linear problem. In fact the condition that
all \lambda deformed contours are periodic can be used as an alternative to
solving the Pohlmeyer equations and is equivalent to imposing the vanishing of
an infinite set of conserved charges derived from integrability.Comment: 29 pages, LaTeX, 1 figur
Universal RCFT Correlators from the Holomorphic Bootstrap

We elaborate and extend the method of Wronskian differential equations for
conformal blocks to compute four-point correlation functions on the plane for
classes of primary fields in rational (and possibly more general) conformal
field theories. This approach leads to universal differential equations for
families of CFT's and provides a very simple re-derivation of the BPZ results
for the degenerate fields $\phi_{1,2}$ and $\phi_{2,1}$ in the c < 1 minimal
models. We apply this technique to compute correlators for the WZW models
corresponding to the Deligne-Cvitanovi\'c exceptional series of Lie algebras.
The application turns out to be subtle in certain cases where there are
multiple decoupled primaries. The power of this approach is demonstrated by
applying it to compute four-point functions for the Baby Monster CFT, which
does not belong to any minimal series.Comment: 36 page
Lorentz-diffeomorphism edge modes in 3d gravity

The proper definition of subsystems in gauge theory and gravity requires an
extension of the local phase space by including edge mode fields. Their role is
on the one hand to restore gauge invariance with respect to gauge
transformations supported on the boundary, and on the other hand to parametrize
the largest set of boundary symmetries which can arise if both the gauge
parameters and the dynamical fields are unconstrained at the boundary. In this
work we construct the extended phase space for three-dimensional gravity in
first order connection and triad variables. There, the edge mode fields consist
of a choice of coordinate frame on the boundary and a choice of Lorentz frame
on the bundle, which together constitute the Lorentz-diffeomorphism edge modes.
After constructing the extended symplectic structure and proving its gauge
invariance, we study the boundary symmetries and the integrability of their
generators. We find that the infinite-dimensional algebra of boundary
symmetries with first order variables is the same as that with metric
variables, and explain how this can be traced back to the expressions for the
diffeomorphism Noether charge in both formulations. This concludes the study of
extended phase spaces and edge modes in three-dimensional gravity, which was
done previously by the author in the BF and Chern-Simons formulations.Comment: 16+10 page
Non-conformal supercurrents in six dimensions

Non-conformal supercurrents in six dimensions are described, which contain
the trace of the energy-momentum tensor and the gamma-trace of the
supersymmetry current amongst their component fields. Within the superconformal
approach to ${\cal N} = (1, 0)$ supergravity, we present various distinct
non-conformal supercurrents, one of which is associated with an ${\cal O}(2)$
(or linear) multiplet compensator, while another with a tensor multiplet
compensator. We also derive an infinite class of non-conformal supercurrents
involving ${\cal O}(n)$ multiplets with $n > 2$. As an illustrative example we
construct the relaxed hypermultiplet in supergravity. Finally, we put forward a
non-conformal supercurrent in the ${\cal N} = (2, 0)$ supersymmetric case.Comment: 41 page
Large NLO corrections in $t\bar{t}W^{\pm}$ and $t\bar{t}t\bar{t}$
  hadroproduction from supposedly subleading EW contributions

We calculate the complete-NLO predictions for $t\bar{t}W^{\pm}$ and
$t\bar{t}t\bar{t}$ production in proton--proton collisions at 13 and 100 TeV.
All the non-vanishing contributions of $\mathcal{O}(\alpha_s^i \alpha^j)$ with
$i+j=3,4$ for $t\bar{t}W^{\pm}$ and $i+j=4,5$ for $t\bar{t}t\bar{t}$ are
evaluated without any approximation. For $t\bar{t}W^{\pm}$ we find that, due to
the presence of $tW \to tW$ scattering, at 13(100) TeV the
$\mathcal{O}(\alpha_s \alpha^3)$ contribution is about 12(70)\% of the LO,
i.e., it is larger than the so-called NLO EW corrections (the
$\mathcal{O}(\alpha_s^2 \alpha^2)$ terms) and has opposite sign. In the case of
$t\bar{t}t\bar{t}$ production, large contributions from electroweak $tt \to tt$
scattering are already present at LO in the $\mathcal{O}(\alpha_s^3 \alpha)$
and $\mathcal{O}(\alpha_s^2 \alpha^2)$ terms. For the same reason we find that
both NLO terms of $\mathcal{O}(\alpha_s^4 \alpha)$, i.e., the NLO EW
corrections, and $\mathcal{O}(\alpha_s^3 \alpha^2)$ are large ($\pm 15 \%$ of
the LO) and their relative contributions strongly depend on the values of the
renormalisation and factorisation scales. However, large accidental
cancellations are present (away from the threshold region) between these two
contributions. Moreover, the NLO corrections strongly depend on the kinematics
and are particularly large at the threshold, where even the relative
contribution from $\mathcal{O}(\alpha_s^2 \alpha^3)$ terms amounts to tens of
percents.Comment: 40 pages, 8 figures; v2: published version with minor changes w.r.t
  original submissio
Constraints on the double-parton scattering cross section from same-sign
  W boson pair production in proton-proton collisions at $\sqrt{s} =$ 8 TeV

A first search for same-sign WW production via double-parton scattering is
performed based on proton-proton collision data at a center-of-mass energy of 8
TeV using dimuon and electron-muon final states. The search is based on the
analysis of data corresponding to an integrated luminosity of 19.7 fb$^{-1}$.
No significant excess of events is observed above the expected single-parton
scattering yields. A 95% confidence level upper limit of 0.32 pb is set on the
inclusive cross section for same-sign WW production via the double-parton
scattering process. This upper limit is used to place a 95% confidence level
lower limit of 12.2 mb on the effective double-parton cross section parameter,
closely related to the transverse distribution of partons in the proton. This
limit on the effective cross section is consistent with previous measurements
as well as with Monte Carlo event generator predictions.Comment: Replaced with the published version. Added the journal reference and
  DOI. All the figures and tables can be found at
  http://cms-results.web.cern.ch/cms-results/public-results/publications/FSQ-16-005
  (CMS Public Pages
Cosmological space-times with resolved Big Bang in Yang-Mills matrix
  models

We present simple solutions of IKKT-type matrix models that can be viewed as
quantized homogeneous and isotropic cosmological space-times, with finite
density of microstates and a regular Big Bang (BB). The BB arises from a
signature change of the effective metric on a fuzzy brane embedded in
Lorentzian target space, in the presence of a quantized 4-volume form. The
Hubble parameter is singular at the BB, and becomes small at late times. There
is no singularity from the target space point of view, and the brane is
Euclidean "before" the BB. Both recollapsing and expanding universe solutions
are obtained, depending on the mass parameters.Comment: 22 pages, 4 figures. V2,V3: improved discussion, typos fixed. V3:
  published versio
(Machine) Learning to Do More with Less

Determining the best method for training a machine learning algorithm is
critical to maximizing its ability to classify data. In this paper, we compare
the standard "fully supervised" approach (that relies on knowledge of
event-by-event truth-level labels) with a recent proposal that instead utilizes
class ratios as the only discriminating information provided during training.
This so-called "weakly supervised" technique has access to less information
than the fully supervised method and yet is still able to yield impressive
discriminating power. In addition, weak supervision seems particularly well
suited to particle physics since quantum mechanics is incompatible with the
notion of mapping an individual event onto any single Feynman diagram. We
examine the technique in detail -- both analytically and numerically -- with a
focus on the robustness to issues of mischaracterizing the training samples.
Weakly supervised networks turn out to be remarkably insensitive to systematic
mismodeling. Furthermore, we demonstrate that the event level outputs for
weakly versus fully supervised networks are probing different kinematics, even
though the numerical quality metrics are essentially identical. This implies
that it should be possible to improve the overall classification ability by
combining the output from the two types of networks. For concreteness, we apply
this technology to a signature of beyond the Standard Model physics to
demonstrate that all these impressive features continue to hold in a scenario
of relevance to the LHC.Comment: 32 pages, 12 figures. Example code is provided at
  https://github.com/bostdiek/PublicWeaklySupervised . v3: Version published in
  JHEP, discussion adde
Fast spinning strings on $ \eta $ deformed $ AdS_5 \times S^{5} $

In this paper, considering the correspondence between spin chains and string
sigma models, we explore the rotating string solutions over $ \eta $ deformed $
AdS_5 \times S^{5} $ in the so called fast spinning limit. In our analysis, we
focus only on the bosonic part of the full superstring action and compute the
relevant limits on both $(R \times S^{3})_{\eta} $ and $(R \times S^{5})_{\eta}
$ models. The resulting system reveals that in the fast spinning limit, the
sigma model on $ \eta $ deformed $S^5$ could be $\textit{approximately}$
thought of as the continuum limit of anisotropic $ SU(3) $ Heisenberg spin
chain model. We compute the energy for a certain class of spinning strings in
deformed $S^5$ and we show that this energy can be mapped to that of a similar
spinning string in the purely imaginary $\beta$ deformed background.Comment: 30 pages; references updated; version to appear in JHE
Nonassociative differential geometry and gravity with non-geometric
  fluxes

We systematically develop the metric aspects of nonassociative differential
geometry tailored to the parabolic phase space model of constant locally
non-geometric closed string vacua, and use it to construct preliminary steps
towards a nonassociative theory of gravity on spacetime. We obtain explicit
expressions for the torsion, curvature, Ricci tensor and Levi-Civita connection
in nonassociative Riemannian geometry on phase space, and write down Einstein
field equations. We apply this formalism to construct R-flux corrections to the
Ricci tensor on spacetime, and comment on the potential implications of these
structures in non-geometric string theory and double field theory.Comment: 50 pages; v2: corrected comparison of curvature to ref. [14]; v3:
  clarifying comments added; Final version to be published in JHE
Five-dimensional fermionic Chern-Simons theory

We study 5d fermionic CS theory with a fermionic 2-form gauge potential. This
theory can be obtained from 5d MSYM theory by performing the maximal
topological twist. We put the theory on a five-manifold and compute the
partition function. We find that it is a topological quantity, which involves
the Ray-Singer torsion of the five-manifold. For abelian gauge group we
consider the uplift to the 6d theory and find a mismatch between the 5d
partition function and the 6d index, due to the nontrivial dimensional
reduction of a selfdual two-form gauge field on a circle. We also discuss an
application of the 5d theory to generalized knots made of 2d sheets embedded in
5d.Comment: 67 page
Toward a unified interpretation of quark and lepton mixing from flavor
  and CP symmetries

We discussed the scenario that a discrete flavor group combined with CP
symmetry is broken to $Z_2\times CP$ in both neutrino and charged lepton
sectors. All lepton mixing angles and CP violation phases are predicted to
depend on two free parameters $\theta_{l}$ and $\theta_{\nu}$ varying in the
range of $[0, \pi)$. As an example, we comprehensively study the lepton mixing
patterns which can be derived from the flavor group $\Delta(6n^2)$ and CP
symmetry. Three kinds of phenomenologically viable lepton mixing matrices are
obtained up to row and column permutations. We further extend this approach to
the quark sector. The precisely measured quark mixing angles and CP invariant
can be accommodated for certain values of the free parameters $\theta_{u}$ and
$\theta_{d}$. A simultaneous description of quark and lepton flavor mixing
structures can be achieved from a common flavor group $\Delta(6n^2)$ and CP,
and accordingly the smallest value of the group index $n$ is $n=7$.Comment: 40 pages, 8 figure
Complexity is Simple

In this note we investigate the role of Lloyd's computational bound in
holographic complexity. Our goal is to translate the assumptions behind Lloyd's
proof into the bulk language. In particular, we discuss the distinction between
orthogonalizing and `simple' gates and argue that these notions are useful for
diagnosing holographic complexity. We show that large black holes constructed
from series circuits necessarily employ simple gates, and thus do not satisfy
Lloyd's assumptions. We also estimate the degree of parallel processing
required in this case for elementary gates to orthogonalize. Finally, we show
that for small black holes at fixed chemical potential, the orthogonalization
condition is satisfied near the phase transition, supporting a possible
argument for the Weak Gravity Conjecture first advocated in Brown et al
Scalar Fields, Hierarchical UV/IR Mixing and The Weak Gravity Conjecture

The Weak Gravity Conjecture (WGC) bounds the mass of a particle by its
charge. It is expected that this bound can not be below the ultraviolet cut-off
scale of the effective theory. Recently, an extension of the WGC was proposed
in the presence of scalar fields. We show that this more general version can
bound the mass of a particle to be arbitrarily far below the ultraviolet
cut-off of the effective theory. It therefore manifests a form of hierarchical
UV/IR mixing. This has possible implications for naturalness. We also present
new evidence for the proposed contribution of scalar fields to the WGC by
showing that it matches the results of dimensional reduction. In such a setup
the UV/IR mixing is tied to the interaction between the WGC and non-local gauge
operators.Comment: 22 pages. v2: Added clarifying details and a comment on neutrino
  bound state
Toward Holographic Reconstruction of Bulk Geometry from Lattice
  Simulations

A black hole described in $SU(N)$ gauge theory consists of $N$ D-branes. By
separating one of the D-branes from others and studying the interaction between
them, the black hole geometry can be probed. In order to obtain quantitative
results, we employ the lattice Monte Carlo simulation. As a proof of the
concept, we perform an explicit calculation in the matrix model dual to the
black zero-brane in type IIA string theory. We demonstrate this method actually
works in the high temperature region, where the stringy correction is large. We
argue possible dual gravity interpretations.Comment: 20 pages, 11 figures. Added numerical details in Appendix. Version
  published in JHE