pinecone/core-2020-05-10-deduplication huggingface dataset:
Antinucleon-nucleon interaction at next-to-next-to-next-to-leading order
  in chiral effective field theory

Results for the antinucleon-nucleon ($\bar NN$) interaction obtained at
next-to-next-to-next-to-leading order in chiral effective field theory (EFT)
are reported. A new local regularization scheme is used for the pion-exchange
contributions that has been recently suggested and applied in a pertinent study
of the $NN$ force within chiral EFT. Furthermore, an alternative strategy for
estimating the uncertainty is utilized that no longer depends on a variation of
the cutoffs. The low-energy constants associated with the arising contact terms
are fixed by a fit to the phase shifts and inelasticities provided by a
phase-shift analysis of $\bar pp$ scattering data. An excellent description of
the $\bar NN$ amplitudes is achieved at the highest order considered. Moreover,
because of the quantitative reproduction of partial waves up to $J=3$, there is
also a nice agreement on the level of $\bar pp$ observables. Specifically,
total and integrated elastic and charge-exchange cross sections agree well with
the results from the partial-wave analysis up to laboratory energies of $300$
MeV, while differential cross sections and analyzing powers are described
quantitatively up to $200$-$250$ MeV. The low-energy structure of the $\bar NN$
amplitudes is also considered and compared to data from antiprotonic hydrogen.Comment: 33 pages, 15 figure
Loop neutrino masses from d=7 operator

We discuss the generation of small neutrino masses from d=7 1-loop diagrams.
We first systematically analyze all possible d=7 1-loop topologies. There is a
total of 48 topologies, but only 8 of these can lead to "genuine" d=7 neutrino
masses. Here, we define genuine models to be models in which neither d=5 nor
d=7 tree-level masses nor a d=5 1-loop mass appear, such that the d=7 1-loop is
the leading order contribution to the neutrino masses. All genuine models can
then be organized w.r.t. their particle content. We find there is only one
diagram with no representation larger than triplet, while there are 22 diagrams
with quadruplets. We briefly discuss three minimal example models of this kind
Cornering pseudoscalar-mediated dark matter with the LHC and cosmology

Models in which dark matter particles communicate with the visible sector
through a pseudoscalar mediator are well-motivated both from a theoretical and
from a phenomenological standpoint. With direct detection bounds being
typically subleading in such scenarios, the main constraints stem either from
collider searches for dark matter, or from indirect detection experiments.
However, LHC searches for the mediator particles themselves can not only
compete with -- or even supersede -- the reach of direct collider dark matter
probes, but they can also test scenarios in which traditional monojet searches
become irrelevant, especially when the mediator cannot decay on-shell into dark
matter particles or its decay is suppressed. In this work we perform a detailed
analysis of a pseudoscalar-mediated dark matter simplified model, taking into
account a large set of collider constraints and concentrating on the parameter
space regions favoured by cosmological and astrophysical data. We find that
mediator masses above 100-200~GeV are essentially excluded by LHC searches in
the case of large couplings to the top quark, while forthcoming collider and
astrophysical measurements will further constrain the available parameter
space.Comment: v2: 40 pages, 5 figures, 1 table; references added; some comments
  added; conclusions unchanged; matches published versio
NLO electroweak corrections in general scalar singlet models

If no new physics signals are found, in the coming years, at the Large Hadron
Collider Run-2, an increase in precision of the Higgs couplings measurements
will shift the dicussion to the effects of higher order corrections. In Beyond
the Standard Model (BSM) theories this may become the only tool to probe new
physics. Extensions of the Standard Model (SM) with several scalar singlets may
address several of its problems, namely to explain dark matter, the
matter-antimatter asymmetry, or to improve the stability of the SM up to the
Planck scale. In this work we propose a general framework to calculate one
loop-corrections in BSM models with an arbitrary number of scalar singlets. We
then apply our method to a real and to a complex scalar singlet models. We
assess the importance of the one-loop radiative corrections first by computing
them for a tree level mixing sum constraint, and then for the main Higgs
production process $gg \to H$. We conclude that, for the currently allowed
parameter space of these models, the corrections can be at most a few percent.
Notably, a non-zero correction can survive when dark matter is present, in the
SM-like limit of the Higgs couplings to other SM particles.Comment: 35 pages, 3 figure
Influence of inhomogeneities on holographic mutual information and
  butterfly effect

We study the effect of inhomogeneity, which is induced by the graviton mass
in massive gravity, on the mutual information and the chaotic behavior of a
2+1-dimensional field theory from the gauge/gravity duality. When the system is
near-homogeneous, the mutual information increases as the graviton mass grows.
However, when the system is far from homogeneity, the mutual information
decreases as the graviton mass increases. By adding the perturbations of energy
into the system, we investigate the dynamical mutual information in the shock
wave geometry. We find that the greater perturbations disrupt the mutual
information more rapidly, which resembles the butterfly effect in chaos theory.
Besides, the greater inhomogeneity reduces the dynamical mutual information
more quickly just as in the static case.Comment: a footnote is added and some typos are revise
Constraints on the trilinear Higgs coupling from vector boson fusion and
  associated Higgs production at the LHC

We examine the constraints on the trilinear Higgs coupling $\lambda$ that
originate from associated ($Vh$) and vector boson fusion (VBF) Higgs production
in $pp$ collisions in the context of the Standard Model effective field theory.
The 1-loop contributions to $pp \to V h$ and $pp \to jj h$ that stem from
insertions of the dimension-6 operator $O_6 = - \lambda \left (H^\dagger H
\right )^3$ are calculated and combined with the ${\cal O} (\lambda)$
corrections to the partial decay widths of the Higgs boson. Employing
next-to-next-to-leading order QCD predictions, we analyse the sensitivity of
current and forthcoming measurements of the signal strengths in $Vh$ and VBF
Higgs production to changes in $\lambda$. We show that future LHC runs may be
able to probe modifications of $\lambda$ with a sensitivity similar to the one
that is expected to arise from determinations of double-Higgs production. The
sensitivity of differential $Vh$ and VBF Higgs distributions to a modified
$h^3$ coupling is also studied.Comment: 23 pages, 7 figures; v2: matches published versio
DC Conductivities with Momentum Dissipation in Horndeski Theories

In this paper, we consider two four-dimensional Horndeski-type gravity
theories with scalar fields that give rise to solutions with momentum
dissipation in the dual boundary theories. Firstly, we study Einstein-Maxwell
theory with a Horndeski axion term and two additional free axions which are
responsible for momentum dissipation. We construct static electrically charged
AdS planar black hole solutions in this theory and calculate analytically the
holographic DC conductivity of the dual field theory. We then generalize the
results to include magnetic charge in the black hole solution. Secondly, we
analyze Einstein-Maxwell theory with two Horndeski axions which are used for
momentum dissipation. We obtain AdS planar black hole solutions in the theory
and we calculate the holographic DC conductivity of the dual field theory. The
theory has a critical point $\alpha + \gamma \Lambda = 0$, beyond which the
kinetic terms of the Horndeski axions become ghost-like. The conductivity as a
function of temperature behaves qualitatively like that of a conductor below
the critical point, becoming semiconductor-like at the critical point. Beyond
the critical point, the ghost-like nature of the Horndeski fields is associated
with the onset of unphysical singular or negative conductivities. Some further
generalisations of the above theories are considered also.Comment: 23 pages, 1 figure. Typos corrected and reference adde
On free Lie algebras and particles in electro-magnetic fields

The Poincar\'e algebra can be extended (non-centrally) to the Maxwell algebra
and beyond. These extensions are relevant for describing particle dynamics in
electro-magnetic backgrounds and possibly including the backreaction due the
presence of multipoles. We point out a relation of this construction to free
Lie algebras that gives a unified description of all possible kinematic
extensions, leading to a symmetry algebra that we call Maxwell${}_\infty$. A
specific dynamical system with this infinite symmetry is constructed and
analysed.Comment: 1+27 pages. Mathematica notebook as ancillary fil
A line of CFTs: from generalized free fields to SYK

We point out that there is a simple variant of the SYK model, which we call
cSYK, that is $SL(2,R)$ invariant for all values of the coupling. The
modification consists of replacing the UV part of the SYK action with a
quadratic bilocal term. The corresponding bulk dual is a non-gravitational
theory in a rigid AdS$_2$ background. At weak coupling cSYK is a generalized
free field theory; at strong coupling, it approaches the infrared of SYK. The
existence of this line of fixed points explains the previously found connection
between the three-point function of bilinears in these two theories at large
$q$.Comment: 26 pages, v
NLO electroweak corrections in extended Higgs Sectors with RECOLA2

We present the computer code RECOLA2 along with the first NLO electroweak
corrections to Higgs production in vector-boson fusion and updated results for
Higgs strahlung in the Two-Higgs-Doublet Model and Higgs-Singlet extension of
the Standard Model. A fully automated procedure for the generation of
tree-level and one-loop matrix elements in general models, including
renormalization, is presented. We discuss the application of the
Background-Field Method to the extended models. Numerical results for NLO
electroweak cross sections are presented for different renormalization schemes
in the Two-Higgs-Doublet Model and the Higgs-Singlet extension of the Standard
Model. Finally, we present distributions for the production of a heavy Higgs
boson.Comment: 47 pages, 29 figures, pdflatex, version to appear in JHE
From 4d Yang-Mills to 2d $\mathbb{CP}^{N-1}$ model: IR problem and
  confinement at weak coupling

We study four-dimensional $\mathrm{SU}(N)$ Yang-Mills theory on $\mathbb{R}
\times \mathbb{T}^3=\mathbb{R} \times S^1_A \times S^1_B \times S^1_C$, with a
twisted boundary condition by a $\mathbb{Z}_N$ center symmetry imposed on
$S^1_B \times S^1_C$. This setup has no IR zero modes and hence is free from IR
divergences which could spoil trans-series expansion for physical observables.
Moreover, we show that the center symmetry is preserved at weak coupling
regime. This is shown by first reducing the theory on $\mathbb{T}^2=S_A \times
S_B$, to connect the model to the two-dimensional $\mathbb{CP}^{N-1}$-model.
Then, we prove that the twisted boundary condition by the center symmetry for
the Yang-Mills is reduced to the twisted boundary condition by the
$\mathbb{Z}_N$ global symmetry of $\mathbb{CP}^{N-1}$. There are $N$ classical
vacua, and fractional instantons connecting those $N$ vacua dynamically restore
the center symmetry. We also point out the presence of singularities on the
Borel plane which depend on the shape of the compactification manifold, and
comment on its implications.Comment: 37 pages, 5 figures; v2:references adde
Revisiting Minimal Lepton Flavour Violation in the Light of Leptonic CP
  Violation

The Minimal Lepton Flavour Violation (MLFV) framework is discussed after the
recent indication for CP violation in the leptonic sector. Among the three
distinct versions of MLFV, the one with degenerate right-handed neutrinos will
be disfavoured, if this indication is confirmed. The predictions for leptonic
radiative rare decays and muon conversion in nuclei are analysed, identifying
strategies to disentangle the different MLFV scenarios. The claim that the
present anomalies in the semi-leptonic $B$-meson decays can be explained within
the MLFV context is critically re-examined concluding that such an explanation
is not compatible with the present bounds from purely leptonic processes.Comment: 36 pages, 4 figures. V2: References added; version accepted for
  publication on JHE
Stringy AdS3 from the Worldsheet

We investigate the behaviour of the bosonic string on AdS3 with H-flux at
stringy scales, looking in particular for a `tensionless' limit in which there
are massless higher spin gauge fields. We do this by revisiting the physical
spectrum of the sl(2,R)$_k$ WZW model and considering the limit in which k
becomes small. At k=3 we find that there is an infinite stringy tower of
massless higher spin fields which are part of a continuum of light states. This
can be viewed as a novel tensionless limit, which appears to be distinct from
that inferred from the symmetric orbifold description of superstring AdS3
vacua.Comment: 13 page
Exact Virasoro Blocks from Wilson Lines and Background-Independent
  Operators

Aspects of black hole thermodynamics and information loss can be derived as a
consequence of Virasoro symmetry. To bolster the connection between Virasoro
conformal blocks and AdS$_3$ quantum gravity, we study sl$(2)$ Chern-Simons
Wilson line networks and revisit the idea that they compute a variety of
CFT$_2$ observables, including Virasoro OPE blocks, exactly. We verify this in
the semiclassical large central charge limit and to low orders in a
perturbative $1/c$ expansion.
  Wilson lines connecting the boundary to points in the bulk play a natural
role in bulk reconstruction. Because quantum gravity in AdS$_3$ is rigidly
fixed by Virasoro symmetry, we argue that sl$(2)$ Wilson lines provide building
blocks for background independent bulk reconstruction. In particular, we show
explicitly that they automatically compute the uniformizing coordinates
appropriate to any background state.Comment: V3- Added some references V2- Significantly Expanded Appendix on
  Regulation; 32+21 page
Comments on Squashed-sphere Partition Functions

We study the partition function of odd-dimensional conformal field theories
placed on spheres with a squashed metric. We establish that the round sphere
provides a local extremum for the free energy which, in general, is not a
global extremum. In addition, we show that the leading quadratic correction to
the free energy around this extremum is proportional to the coefficient, $C_T$,
determining the two-point function of the energy-momentum tensor in the CFT.
For three-dimensional CFTs, we compute explicitly this proportionality constant
for a class of squashing deformations which preserve an $SU(2)\times U(1)$
isometry group on the sphere. In addition, we evaluate the free energy as a
function of the squashing parameter for theories of free bosons, free fermions,
as well as CFTs holographically dual to Einstein gravity with a negative
cosmological constant. We observe that, after suitable normalization, the
dependence of the free energy on the squashing parameter for all these theories
is nearly universal for a large region of parameter space and is well
approximated by a simple quadratic function arising from holography. We
generalize our results to five-dimensional CFTs and, in this context, we also
study theories holographically dual to six-dimensional Gauss-Bonnet gravity.Comment: 40 pages, 7 figures, 1 table; v2: additional comments and
  clarifications added, updated bibliograph
Mixed Rademacher and BPS Black Holes

Dyonic 1/4-BPS states in Type IIB string theory compactified on $\mathrm{K}3
\times T^2$ are counted by meromorphic Jacobi forms. The finite parts of these
functions, which are mixed mock Jacobi forms, account for the degeneracy of
states stable throughout the moduli space of the compactification. In this
paper, we obtain an exact asymptotic expansion for their Fourier coefficients,
refining the Hardy-Ramanujan-Littlewood circle method to deal with their
mixed-mock character. The result is compared to a low-energy supergravity
computation of the exact entropy of extremal dyonic 1/4-BPS single-centered
black holes, obtained by applying supersymmetric localization techniques to the
quantum entropy function.Comment: 42 page
Entanglement Entropy of ABJM Theory and Entropy of Topological Black
  Hole

In this paper we discuss the supersymmetric localization of the 4D
$\mathcal{N}=2$ off-shell gauged supergravity in the background of the
$\textrm{AdS}_4$ neutral topological black hole, which is the gravity dual of
the ABJM theory defined on the boundary $\textrm{S}^1 \times \mathbb{H}^2$. We
compute the large-$N$ expansion of the supergravity partition function. The
result gives the black hole entropy with the logarithmic correction, which
matches the previous result of the entanglement entropy of the ABJM theory up
to some stringy effects. Our result is consistent with the previous on-shell
one-loop computation of the logarithmic correction to black hole entropy. It
provides an explicit example of the identification of the entanglement entropy
of the boundary conformal field theory with the bulk black hole entropy beyond
the leading order given by the classical Bekenstein-Hawking formula, which
consequently tests the AdS/CFT correspondence at the subleading order.Comment: 34 pages, 1 figure; minor changes in v2; references added in v3,
  published version in JHE
Precision Probes of QCD at High Energies

New physics, that is too heavy to be produced directly, can leave measurable
imprints on the tails of kinematic distributions at the LHC. We use energetic
QCD processes to perform novel measurements of the Standard Model (SM)
Effective Field Theory. We show that the dijet invariant mass spectrum, and the
inclusive jet transverse momentum spectrum, are sensitive to a dimension 6
operator that modifies the gluon propagator at high energies. The dominant
effect is constructive or destructive interference with SM jet production. We
compare differential next-to-leading order predictions from POWHEG to public 7
TeV jet data, including scale, PDF, and experimental uncertainties and their
respective correlations. We constrain a New Physics (NP) scale of 3.5 TeV with
current data. We project the reach of future 13 and 100 TeV measurements, which
we estimate to be sensitive to NP scales of 8 and 60 TeV, respectively. As an
application, we apply our bounds to constrain heavy vector octet colorons that
couple to the QCD current. We project that effective operators will surpass
bump hunts, in terms of coloron mass reach, even for sequential couplings.Comment: 40 pages, 13 figures, 8 tables. Minor changes. Accepted on JHE
Giant Magnons of String Theory in the Lambda Background

The analogues of giant magnon configurations are studied on the string world
sheet in the lambda background. This is a discrete deformation of the
AdS(5)xS(5) background that preserves the integrability of the world sheet
theory. Giant magnon solutions are generated using the dressing method and
their dispersion relation is found. This reduces to the usual dyonic giant
magnon dispersion relation in the appropriate limit and becomes relativistic in
another limit where the lambda model becomes the generalized sine-Gordon theory
of the Pohlmeyer reduction. The scattering of giant magnons is then shown in
the semi-classical limit to be described by the quantum S-matrix that is a
quantum group deformation of the conventional giant magnon S-matrix. It is
further shown that in the small g limit, a sector of the S-matrix is related to
the XXZ spin chain whose spectrum matches the spectrum of magnon bound states.Comment: 53 pages, 6 figures, final version to appear in JHE
A Radiative Neutrino Mass Model with SIMP Dark Matter

We propose the first viable radiative seesaw model, in which the neutrino
masses are induced radiatively via the two-loop Feynman diagram involving
Strongly Interacting Massive Particles (SIMP). The stability of SIMP dark
matter (DM) is ensured by a $\mathbb{Z}_5$ discrete symmetry, through which the
DM annihilation rate is dominated by the $3 \to 2$ self-annihilating processes.
The right amount of thermal relic abundance can be obtained with perturbative
couplings in the resonant SIMP scenario, while the astrophysical bounds
inferred from the Bullet cluster and spherical halo shapes can be satisfied. We
show that SIMP DM is able to maintain kinetic equilibrium with thermal plasma
until the freeze-out temperature via the Yukawa interactions associated with
neutrino mass generation.Comment: 19 pages, 8 figures, 2 tables, expanded, new appendix added, new
  references added, updated plots, fixed minor typos, matches journal versio
Lepton-flavor universality violation in $R_K$ and $R_{D^{(*)}}$ from
  warped space

Some anomalies in the processes $b\to s\ell\ell$ ($\ell=\mu,e$) and $b\to c
\ell\bar\nu_\ell$ ($\ell=\tau,\mu,e$), in particular in the observables $R_K$
and $R_{D^{(\ast)}}$, have been found by the BaBar, LHCb and Belle
Collaborations, leading to a possible lepton flavor universality violation. If
these anomalies were confirmed they would inevitably lead to physics beyond the
Standard Model. In this paper we try to accommodate the present anomalies in an
extra dimensional theory, solving the naturalness problem of the Standard Model
by means of a warped metric with a strong conformality violation near the
infra-red brane. The $R_K$ anomaly can be accommodated provided that the
left-handed bottom quark and muon lepton have some degree of compositeness in
the dual theory. The theory is consistent with all electroweak and flavor
observables, and with all direct searches of Kaluza-Klein electroweak gauge
bosons and gluons. The fermion spectrum, and fermion mixing angles, can be
reproduced by mostly elementary right-handed bottom quarks, and tau and muon
leptons. Moreover the $R_{D^{(\ast)}}$ anomaly requires a strong degree of
compositeness for the left-handed tau leptons, which turns out to be in tension
with experimental data on the $g_{\tau_L}^Z$ coupling, possibly unless some
degree of fine-tuning is introduced in the fixing of the CKM matrix.Comment: 40 pages, 20 figures; v2: Extended version with analyses of
  non-observation of FUV in the mu/e sector, LFU tests in tau decays, B->K nu
  nu and B->K tau tau; v3: Revised version where radiative corrections to
  observables $\tau\to\ell \nu\nu$ and the $Z\bar\ell\ell$ couplings
  ($\ell=\tau,\mu$), as well as the LHC dilepton resonance from bottom-bottom
  fusion, are considered. Some conclusions change
Exact Renormalization Group and Sine Gordon Theory

The exact renormalization group is used to study the RG flow of quantities in
field theories. The basic idea is to write an evolution operator for the flow
and evaluate it in perturbation theory. This is easier than directly solving
the differential equation. This is illustrated by reproducing known results in
four dimensional $\phi^4$ field theory and the two dimensional Sine-Gordon
theory. It is shown that the calculation of beta function is somewhat
simplified. The technique is also used to calculate the c-function in two
dimensional Sine-Gordon theory. This agrees with other prescriptions for
calculating c-functions in the literature. If one extrapolates the connection
between central charge of a CFT and entanglement entropy in two dimensions, to
the c-function of the perturbed CFT, then one gets a value for the entanglement
entropy in Sine-Gordon theory that is in exact agreement with earlier
calculations (including one using holography) in arXiv:1610.04233