pinecone/core-2020-05-10-deduplication huggingface dataset:
Kinematic space for conical defects

Kinematic space can be used as an intermediate step in the AdS/CFT dictionary
and lends itself naturally to the description of diffeomorphism invariant
quantities. From the bulk it has been defined as the space of boundary anchored
geodesics, and from the boundary as the space of pairs of CFT points. When the
bulk is not globally AdS$_3$ the appearance of non-minimal geodesics leads to
ambiguities in these definitions. In this work conical defect spacetimes are
considered as an example where non-minimal geodesics are common. From the bulk
it is found that the conical defect kinematic space can be obtained from the
AdS$_3$ kinematic space by the same quotient under which one obtains the defect
from AdS$_3$. The resulting kinematic space is one of many equivalent
fundamental regions. From the boundary the conical defect kinematic space can
be determined by breaking up OPE blocks into contributions from individual bulk
geodesics. A duality is established between partial OPE blocks and bulk fields
integrated over individual geodesics, minimal or non-minimal.Comment: 29 pages, 9 figures. As published in JHE
An exactly solvable quench protocol for integrable spin models

Quantum quenches in continuum field theory across critical points are known
to display different scaling behaviours in different regimes of the quench
rate. We extend these results to integrable lattice models such as the
transverse field Ising model on a one-dimensional chain and the Kitaev model on
a two-dimensional honeycomb lattice using a nonlinear quench protocol which
allows for exact analytical solutions of the dynamics. Our quench protocol
starts with a finite mass gap at early times and crosses a critical point or a
critical region, and we study the behaviour of one point functions of the
quenched operator at the critical point or in the critical region as a function
of the quench rate. For quench rates slow compared to the initial mass gap, we
find the expected Kibble-Zurek scaling. In contrast, for rates fast compared to
the mass gap, but slow compared to the inverse lattice spacing, we find scaling
behaviour similar to smooth fast continuum quenches. For quench rates of the
same order of the lattice scale, the one point function saturates as a function
of the rate, approaching the results of an abrupt quench. The presence of an
extended critical surface in the Kitaev model leads to a variety of scaling
exponents depending on the starting point and on the time where the operator is
measured. We discuss the role of the amplitude of the quench in determining the
extent of the slow (Kibble-Zurek) and fast quench regimes, and the onset of the
saturation.Comment: 54 pages, 13 figures; v2: added analytic argument for Kitaev mode
Differential Distributions for t-channel Single Top-Quark Production and
  Decay at Next-to-Next-to-Leading Order in QCD

We present a detailed phenomenological study of the next-to-next-to-leading
order (NNLO) QCD corrections for $t$-channel single top (anti-)quark production
and its semi-leptonic decay at the CERN Large Hadron Collider (LHC). We find
the NNLO corrections for the total inclusive rates at the LHC with different
center of mass energies are generally smaller than the NLO corrections,
indicative of improved convergence. However, they can be large for differential
distributions, reaching a level of $10\%$ or more in certain regions of the
transverse momentum distributions of the top (anti-)quark and the
pseudo-rapidity distributions of the leading jet in the event. In all cases the
perturbative hard scale uncertainties are greatly reduced after the NNLO
corrections are included. We also show a comparison of the normalized
parton-level distributions to recent data from the 8 TeV measurement of the
ATLAS Collaboration. The NNLO corrections tend to shift the theoretical
predictions closer to the measured transverse momentum distribution of the top
(anti)-quark. Importantly, for the LHC at 13 TeV, we present NNLO cross
sections in a fiducial volume with decays of the top quark included.Comment: minor changes, published versio
Amplitudes on plane waves from ambitwistor strings

In marked contrast to conventional string theory, ambitwistor strings remain
solvable worldsheet theories when coupled to curved background fields. We use
this fact to consider the quantization of ambitwistor strings on plane wave
metric and plane wave gauge field backgrounds. In each case, the worldsheet
model is anomaly free as a consequence of the background satisfying the field
equations. We derive vertex operators (in both fixed and descended picture
numbers) for gravitons and gluons on these backgrounds from the worldsheet CFT,
and study the 3-point functions of these vertex operators on the Riemann
sphere. These worldsheet correlation functions reproduce the known results for
3-point scattering amplitudes of gravitons and gluons in gravitational and
gauge theoretic plane wave backgrounds, respectively.Comment: 29 pages, 1 figure. v2: added discussion, published versio
Onset of hydrodynamics for a quark-gluon plasma from the evolution of
  moments of distribution functions

The pre-equilibrium evolution of a quark-gluon plasma produced in a heavy-ion
collision is studied in the framework of kinetic theory. We discuss the
approach to local thermal equilibrium, and the onset of hydrodynamics, in terms
of a particular set of moments of the distribution function. These moments
quantify the momentum anisotropies to a finer degree than the commonly used
ratio of longitudinal to transverse pressures. They are found to be in direct
correspondence with viscous corrections of hydrodynamics, and provide therefore
an alternative measure of these corrections in terms of the distortion of the
momentum distribution. As an application, we study the evolution of these
moments by solving the Boltzmann equation for a boost invariant expanding
system, first analytically in the relaxation time approximation, and then
numerically for a quark-gluon plasma within the small angle approximation to
the collision kernel.Comment: updated version, with corrected discussion
Slepton Non-Universality in the Flavor-Effective MSSM

Supersymmetric theories supplemented by an underlying flavor-symmetry
$\mathcal{G}_f$ provide a rich playground for model building aimed at
explaining the flavor structure of the Standard Model. In the case where
supersymmetry breaking is mediated by gravity, the soft-breaking Lagrangian
typically exhibits large tree-level flavor violating effects, even if it stems
from an ultraviolet flavor-conserving origin. Building on previous work, we
continue our phenomenological analysis of these models with a particular
emphasis on leptonic flavor observables. We consider three representative
models which aim to explain the flavor structure of the lepton sector, with
symmetry groups $\mathcal{G}_f = \Delta(27)$, $A_4,$ and $S_3$.Comment: References added, minor typos corrected. 28 pages, 8 figure
A generic anti-QCD jet tagger

New particles beyond the Standard Model might be produced with a very high
boost, for instance if they result from the decay of a heavier particle. If the
former decay hadronically, then their signature is a single massive fat jet
which is difficult to separate from QCD backgrounds. Jet substructure and
machine learning techniques allow for the discrimination of many specific
boosted objects from QCD, but the scope of possibilities is very large, and a
suite of dedicated taggers may not be able to cover every possibility - in
addition to making experimental searches cumbersome. In this paper we describe
a generic model-independent tagger that is able to discriminate a wide variety
of hadronic boosted objects from QCD jets using N-subjettiness variables, with
a significance improvement varying between 2 and 8. This is in addition to any
improvement that might come from a cut on jet mass. Such a tagger can be used
in model-independent searches for new physics yielding fat jets. We also show
how such a tagger can be applied to signatures over a wide range of jet masses
without sculpting the background distributions, allowing to search for new
physics as bumps on jet mass distributions.Comment: Main text: 19 page
Breakdown of the Equal Area Law for Holographic Entanglement Entropy

We investigate a holographic version of Maxwell's equal area law analogous to
that for the phase transition in the black hole temperature/black hole entropy
plane of a charged AdS black hole. We consider proposed area laws for both the
black hole temperature/holographic entanglement entropy plane and the black
hole temperature/2-point correlation function plane. Despite recent claims to
the contrary, we demonstrate numerically that neither proposal is valid. We
argue that there is no physical reason to expect such a construction in these
planes.Comment: 17 pages, 8 figures. v2: Added appendix and discussio
ABJM $\theta$-Bremsstrahlung at four loops and beyond: non-planar
  corrections

We consider the Bremsstrahlung function associated to a 1/6-BPS Wilson loop
in ABJM theory, with a cusp in the couplings to scalar fields. We non-trivially
extend its recent four-loop computation at weak coupling to include non-planar
corrections. We have recently proposed a conjecture relating this object to
supersymmetric circular Wilson loops with multiple windings, which can be
computed via localization. We find agreement between this proposal and the
perturbative computation of the Bremsstrahlung function, including color
sub-leading corrections. This supports the conjecture and hints at its validity
beyond the planar approximation.Comment: 22 page
On non-supersymmetric conformal manifolds: field theory and holography

We discuss the constraints that a conformal field theory should enjoy to
admit exactly marginal deformations, i.e. to be part of a conformal manifold.
In particular, using tools from conformal perturbation theory, we derive a sum
rule from which one can extract restrictions on the spectrum of low spin
operators and on the behavior of OPE coefficients involving nearly marginal
operators. We then consider conformal field theories admitting a gravity dual
description, and as such a large-$N$ expansion. We discuss the relation between
conformal perturbation theory and loop expansion in the bulk, and show how such
connection could help in the search for conformal manifolds beyond the planar
limit. Our results do not rely on supersymmetry, and therefore apply also
outside the realm of superconformal field theories.Comment: 30 pages, figures. v3: discussion on contribution of graviton
  exchange extended + minor correction
Asymptotic $U(1)$ charges at spatial infinity

Large gauge symmetries in Minkowski spacetime are often studied in two
distinct regimes: either at asymptotic (past or future) times or at spatial
infinity. By working in harmonic gauge, we provide a unified description of
large gauge symmetries (and their associated charges) that applies to both
regimes. At spatial infinity the charges are conserved and interpolate between
those defined at the asymptotic past and future. This explains the equality of
asymptotic past and future charges, as recently proposed in connection with
Weinberg's soft photon theorem.Comment: 23 page
Minimal gravity and Frobenius manifolds: bulk correlation on sphere and
  disk

There are two alternative approaches to the minimal gravity - direct
Liouville approach and matrix models. Recently there has been a certain
progress in the matrix model approach, growing out of presence of a Frobenius
manifold (FM) structure embedded in the theory. The previous studies were
mainly focused on the spherical topology. Essentially, it was shown that the
action principle of Douglas equation allows to define the free energy and to
compute the correlation numbers if the resonance transformations are properly
incorporated. The FM structure allows to find the explicit form of the
resonance transformation as well as the closed expression for the partition
function. In this paper we elaborate on the case of gravitating disk. We focus
on the bulk correlators and show that in the similar way as in the closed
topology the generating function can be formulated using the set of flat
coordinates on the corresponding FM. Moreover, the resonance transformations,
which follow from the spherical topology consideration, are exactly those
needed to reproduce FZZ result of the Liouville gravity approach
Measurement of CP violation in $B^0 \to J/\psi K^0_S$ and $B^0 \to \psi(2S) K^0_S$ decays

A measurement is presented of decay-time-dependent CP violation in the decays $B^0 \to J/\psi K^0_S$ and $B^0 \to \psi(2S) K^0_S$, where the $J/\psi$ is reconstructed from two electrons and the $\psi(2S)$ from two muons. The analysis uses a sample of pp collision data recorded with the LHCb experiment at centre-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 $fb^{−1}$. The CP -violation observables are measured to be\ud
$C(B^0 \to J/\psi K^0_S) = 0.12 \pm 0.07 \pm 0.02,$\ud
$S(B^0 \to J/\psi K^0_S) = 0.83 \pm 0.08 \pm 0.01,$\ud
$C(B^0 \to \psi(2S) K^0_S) = −0.05 \pm 0.10 \pm 0.01,$\ud
$S(B^0 \to \psi(2S) K^0_S) = 0.84 \pm 0.10 \pm 0.01,$\ud
where C describes CP violation in the direct decay, and S describes CP violation in the interference between the amplitudes for the direct decay and for the decay after $B^0 − \overline{B}^0$ oscillation. The first uncertainties are statistical and the second are systematic. The two sets of results are compatible with the previous LHCb measurement using $B^0 \to J/\psi K^0_S$ decays, where the $J/ψ$ meson was reconstructed from two muons. The averages of all three sets of LHCb results are\ud
$C(B^0 \to [c\overline{c}]K^0_S) = −0.017 \pm 0.029,$\ud
$S(B^0 \to [c\overline{c}]K^0_S) = 0.760 \pm 0.034,$\ud
under the assumption that higher-order contributions to the decay amplitudes are negligible. The uncertainties include statistical and systematic contributions
A String Theory Which Isn't About Strings

Quantization of closed string proceeds with a suitable choice of worldsheet
vacuum. A priori, the vacuum may be chosen independently for left-moving and
right-moving sectors. We construct {\sl ab initio} quantized bosonic string
theory with left-right asymmetric worldsheet vacuum and explore its
consequences and implications. We critically examine the validity of new vacuum
and carry out first-quantization using standard operator formalism. Remarkably,
the string spectrum consists only of a finite number of degrees of freedom:
string gravity (massless spin-two, Kalb-Ramond and dilaton fields) and two
massive spin-two Fierz-Pauli fields. The massive spin-two fields have negative
norm, opposite mass-squared, and provides a Lee-Wick type extension of string
gravity. We compute two physical observables: tree-level scattering amplitudes
and one-loop cosmological constant. Scattering amplitude of four dilatons is
shown to be a rational function of kinematic invariants, and in $D=26$
factorizes into contributions of massless spin-two and a pair of massive
spin-two fields. The string one loop partition function is shown to perfectly
agree with one loop Feynman diagram of string gravity and two massive spin-two
fields. In particular, it does not exhibit modular invariance. We critically
compare our construction with recent studies and contrast differences.Comment: 42 pages, 1 figure, minor corrections, references added; v3: minor
  corrections, references added, published version in JHE
ABJM $\theta$-Bremsstrahlung at four loops and beyond

In ABJ(M) theory a generalized cusp can be constructed out of the 1/6 BPS
Wilson line by introducing an angle $\varphi$ in the spacial contour and/or an
angle $\theta$ in the internal R-symmetry space. The small angles limits of its
anomalous dimension are controlled by corresponding Bremsstrahlung functions.
In this note we compute the internal space $\theta$-Bremsstrahlung function to
four loops at weak coupling in the planar limit. Based on this result, we
propose an all order conjecture for the $\theta$-Bremsstrahlung function.Comment: 40 pages; v2: references added, JHEP published extended versio
New BPS Wilson loops in $\mathcal N \textbf{= 4}$ circular quiver
  Chern-Simons-matter theories

We construct new families of 1/4 BPS Wilson loops in circular quiver
$\mathcal N=4$ superconformal Chern-Simons-matter (SCSM) theories in three
dimensions. They are defined as the holonomy of superconnections that contain
non-trivial couplings to scalar and fermions, and cannot be reduced to
block-diagonal matrices. Consequently, the new operators cannot be written in
terms of double-node Wilson loops, as the ones considered so far in the
literature. For particular values of the couplings the superconnection becomes
block-diagonal and we recover the known fermionic 1/4 and 1/2 BPS Wilson loops.
The new operators are cohomologically equivalent to bosonic 1/4 BPS Wilson
loops and are then amenable of exact evaluation via localization techniques.
Moreover, in the case of orbifold ABJM theory we identify the corresponding
gravity duals for some of the 1/4 and 1/2 BPS Wilson loops.Comment: 32 pages; v2: minor improvements, general classification of BPS WLs
  added; v3: comments added, typos fixed, JHEP published versio
Generalised Kinematics for Double Field Theory

We formulate a kinematical extension of Double Field Theory on a
$2d$-dimensional para-Hermitian manifold $(\mathcal{P},\eta,\omega)$ where the
$O(d,d)$ metric $\eta$ is supplemented by an almost symplectic two-form
$\omega$. Together $\eta$ and $\omega$ define an almost bi-Lagrangian structure
$K$ which provides a splitting of the tangent bundle
$T\mathcal{P}=L\oplus\tilde{L}$ into two Lagrangian subspaces. In this paper a
canonical connection and a corresponding generalised Lie derivative for the
Leibniz algebroid on $T\mathcal{P}$ are constructed. We find integrability
conditions under which the symmetry algebra closes for general $\eta$ and
$\omega$, even if they are not flat and constant. This formalism thus provides
a generalisation of the kinematical structure of Double Field Theory. We also
show that this formalism allows one to reconcile and unify Double Field Theory
with Generalised Geometry which is thoroughly discussed.Comment: 41 pages, v2: typos corrected, references added, published versio
Direct determination of Wilson coefficients using $B^0\to
  K^{*0}\mu^+\mu^-$ decays

A method to directly determine the Wilson coefficients for rare $b\to s$
transitions using $B^0\to K^{*0}\mu^+\mu^-$ decays in an unbinned maximum
likelihood fit is presented. The method has several advantages compared to the
conventional determination of the Wilson coefficients from angular observables
that are determined in bins of $q^2$, the square of the mass of the dimuon
system. The method uses all experimental information in an optimal way and
automatically accounts for experimental correlations. Performing
pseudoexperiments, we show the improved sensitivity of the proposed method for
the Wilson coefficients. We also demonstrate that it will be possible to use
the method with the combined Run 1 and 2 data sample taken by the LHCb
experiment.Comment: 36 pages, 8 figures; v2: Negligible changes in numerics, references
  added, matches published versio
8d gauge anomalies and the topological Green-Schwarz mechanism

String theory provides us with 8d supersymmetric gauge theory with gauge
algebras $\mathfrak{su}(N)$, $\mathfrak{so}(2N)$, $\mathfrak{sp}(N)$,
$\mathfrak{e}_{6}$, $\mathfrak{e}_{7}$ and $\mathfrak{e}_{8}$, but no
construction for $\mathfrak{so}(2N{+}1)$, $\mathfrak{f}_4$ and $\mathfrak{g}_2$
is known. In this paper, we show that the theories for $\mathfrak{f}_4$ and
$\mathfrak{so}(2N{+}1)$ have a global gauge anomaly associated to $\pi_{d=8}$,
while $\mathfrak{g}_2$ does not have it. We argue that the anomaly associated
to $\pi_d$ in $d$-dimensional gauge theories cannot be canceled by topological
degrees of freedom in general. We also show that the theories for
$\mathfrak{sp}(N)$ have a subtler gauge anomaly, which we suggest should be
canceled by a topological analogue of the Green-Schwarz mechanism.Comment: 27 page
Trisecting non-Lagrangian theories

We propose a way to define and compute invariants of general smooth
4-manifolds based on topological twists of non-Lagrangian 4d N=2 and N=3
theories in which the problem is reduced to a fairly standard computation in
topological A-model, albeit with rather unusual targets, such as compact and
non-compact Gepner models, asymmetric orbifolds, N=(2,2) linear dilaton
theories, "self-mirror" geometries, varieties with complex multiplication, etc.Comment: 49 pages, 8 figures, 8 tables, v2: a reference adde
Higgs Assisted Q-balls from Pseudo-Nambu-Goldstone Bosons

Motivated by recent constructions of TeV-scale strongly-coupled dynamics,
either associated with the Higgs sector itself as in pseudo-Nambu-Goldstone
boson (pNGB) Higgs models or in theories of asymmetric dark matter, we show
that stable solitonic Q- balls can be formed from light pion-like pNGB fields
carrying a conserved global quantum number in the presence of the Higgs field.
We focus on the case of thick-wall Q-balls, where solutions satisfying all
constraints are shown to exist over a range of parameter values. In the limit
that our approximations hold, the Q-balls are weakly bound and parametrically
large, and the form of the interactions of the light physical Higgs with the
Q-ball is determined by the breaking of scale symmetry.Comment: 24 pages, 6 figures, 1 tabl
SYK Model, Chaos and Conserved Charge

We study the SYK model with complex fermions, in the presence of an
all-to-all $q$-body interaction, with a non-vanishing chemical potential. We
find that, in the large $q$ limit, this model can be solved exactly and the
corresponding Lyapunov exponent can be obtained semi-analytically. The
resulting Lyapunov exponent is a sensitive function of the chemical potential
$\mu$. Even when the coupling $J$, which corresponds to the disorder averaged
values of the all to all fermion interaction, is large, values of $\mu$ which
are exponentially small compared to $J$ lead to suppression of the Lyapunov
exponent.Comment: 18pages, 4 figures, v2:references and acknowledgment added, typos
  correcte
Final-state QED Multipole Radiation in Antenna Parton Showers

We present a formalism for a fully coherent QED parton shower. The complete
multipole structure of photonic radiation is incorporated in a single branching
kernel. The regular on-shell 2 to 3 kinematic picture is kept intact by
dividing the radiative phase space into sectors, allowing for a definition of
the ordering variable that is similar to QCD antenna showers. A modified
version of the Sudakov veto algorithm is discussed that increases performance
at the cost of the introduction of weighted events. Due to the absence of a
soft singularity, the formalism for photon splitting is very similar to the QCD
analogon of gluon splitting. However, since no color structure is available to
guide the selection of a spectator, a weighted selection procedure from all
available spectators is introduced.Comment: 33 pages, 12 figures. Added subsection 4.3 and some comments and
  references per reviewer request. Version accepted by JHE
Charged structure constants from modularity

We derive a universal formula for the average heavy-heavy-light structure
constants for 2d CFTs with non-vanishing u(1) charge. The derivation utilizes
the modular properties of one-point functions on the torus. Refinements in N=2
SCFTs, show that the resulting Cardy-like formula for the structure constants
has precisely the same shifts in the central charge as that of the
thermodynamic entropy found earlier. This analysis generalizes the recent
results by Kraus and Maloney for CFTs with an additional global u(1) symmetry.
Our results at large central charge are also shown to match with computations
from the holographic dual, which suggest that the averaged CFT three-point
coefficient also serves as an useful probe of detecting black hole hair.Comment: 22 pages, 1 figure; v2: approximates published versio