pinecone/core-2020-05-10-deduplication huggingface dataset:
Sterile Neutrino Dark Matter Production in the Neutrino-phillic Two
  Higgs Doublet Model

Sterile Neutrinos with a mass in the keV range form a good candidate for dark
matter. They are naturally produced from neutrino oscillations via their mixing
with the active neutrinos. However the production via non-resonant neutrino
oscillations has recently been ruled out. The alternative production via Higgs
decay is negligibly small compared to neutrino oscillations. We show that in
the neutrino-phillic two Higgs doublet model, the contribution from Higgs decay
can dominate over the contribution from neutrino oscillations and evade all
constraints. We also study the free-streaming horizon and find that a sterile
neutrino mass in the range of 4 to 53 keV leads to warm dark matter.Comment: 20 pages, 3 figures; v2: references added, Pauli blocking included,
  leading to about 40% correction to DM abundance, freestreaming horizon
  unaffected, conclusions unchanged, published in JHE
Holographic Tunneling Wave Function

The Hartle-Hawking wave function in cosmology can be viewed as a decaying
wave function with anti-de Sitter (AdS) boundary conditions. We show that the
growing wave function in AdS familiar from Euclidean AdS/CFT is equivalent,
semiclassically and up to surface terms, to the tunneling wave function in
cosmology. The cosmological measure in the tunneling state is given by the
partition function of certain relevant deformations of CFTs on a locally AdS
boundary. We compute the partition function of finite constant mass
deformations of the O(N) vector model on the round three sphere and show this
qualitatively reproduces the behaviour of the tunneling wave function in
Einstein gravity coupled to a positive cosmological constant and a massive
scalar. We find the amplitudes of inhomogeneities are not damped in the
holographic tunneling state.Comment: 22 pages, 5 figures, Revisions according to the JHEP edito
A set of top quark spin correlation and polarization observables for the
  LHC: Standard Model predictions and new physics contributions

We consider top-antitop quark ($t{\bar t}$) production at the Large Hadron
Collider (LHC) with subsequent decay into dileptonic and lepton plus jets final
states. We present a set of leptonic angular correlations and distributions
with which experiments can probe all the independent coefficient functions of
the top-spin dependent parts of the $t{\bar t}$ production spin density
matrices. We compute these angular correlations and distributions for LHC
center-of-mass energies 8, 13, and 14 TeV within the Standard Model at
next-to-leading order in the QCD coupling including the mixed QCD-weak
corrections and for the transverse top-quark polarization and the $t{\bar t}$
charge asymmetry also the mixed QCD-QED corrections. In addition we analyze and
compute the effects of new interactions on these observables in terms of a
gauge-invariant effective Lagrangian which contains all operators relevant for
hadronic $t{\bar t}$ production up to mass dimension six.Comment: Latex, 35 pages, sevaral comments and 2 tables added, version to be
  published in JHE
Holographic R\'enyi entropy for two-dimensional N=(1,1) superconformal
  field theory

In this paper we investigate the holographic R\'enyi entropy in $\mathcal
N=1$ supergravity (SUGRA) in AdS$_3$ spacetime, which is dual to the
two-dimensional $\mathcal N=(1,1)$ superconformal field theory (SCFT). We
consider both cases of two short intervals on a line with zero temperature and
one interval on a circle with low temperature. In SUGRA side we consider
contributions of both graviton and gravitino, and in SCFT side we consider
contributions of both stress tensor $T$, $\bar T$ and their superpartners $G$,
$\bar G$. We find matches between SUGRA and SCFT results.Comment: V1, 19 pages; V2, 19 pages, publised versio
Functional determinants, index theorems, and exact quantum black hole
  entropy

The exact quantum entropy of BPS black holes can be evaluated using
localization in supergravity. An important ingredient in this program, that has
been lacking so far, is the one-loop effect arising from the quadratic
fluctuations of the exact deformation (the $Q\mathcal{V}$ operator). We compute
the fluctuation determinant for vector multiplets and hyper multiplets around
$Q$-invariant off-shell configurations in four-dimensional $\mathcal{N}=2$
supergravity with $AdS_{2} \times S^{2}$ boundary conditions, using the
Atiyah-Bott fixed-point index theorem and a subsequent zeta function
regularization. Our results extend the large-charge on-shell entropy
computations in the literature to a regime of finite charges. Based on our
results, we present an exact formula for the quantum entropy of BPS black holes
in $\mathcal{N}=2$ supergravity. We explain cancellations concerning
$\frac18$-BPS black holes in $\mathcal{N}=8$ supergravity that were observed in
arXiv:1111.1161. We also make comments about the interpretation of a
logarithmic term in the topological string partition function in the low energy
supergravity theory.Comment: 47 pages; v3 accepted for publication in JHE
Dualising consistent IIA / IIB truncations

We use exceptional field theory to establish a duality between certain
consistent 7-dimensional truncations with maximal SUSY from IIA to IIB. We use
this technique to obtain new consistent truncations of IIB on $S^3$ and
$H^{p,q}$ and work out the explicit reduction formulas in the internal sector.
We also present uplifts for other gaugings of 7-d maximal SUGRA, including
theories with a trombone gauging. Some of the latter can only be obtained by a
non-geometric compactification.Comment: 27 pages; v2: minor typos and references corrected, published version
  (JHEP
On Soft Theorems And Form Factors In N=4 SYM Theory

Soft theorems for the form factors of 1/2-BPS and Konishi operator
supermultiplets are derived at tree level in N=4 SYM theory. They have a form
identical to the one in the amplitude case. For MHV sectors of stress tensor
and Konishi supermultiplets loop corrections to soft theorems are considered at
one loop level. They also appear to have universal form in soft limit. Possible
generalization of the on-shell diagrams to the form factors based on leading
soft behavior is suggested. Finally, we give some comments on inverse soft
limit and integrability of form factors in the limit $q^2\to 0$Comment: 55 pages, 15 figure
The Half-composite Two Higgs Doublet Model and the Relaxion

We study a new confining gauge theory with fermions in a vectorial
representation under the SM gauge group that allows for Yukawa interactions
with the Higgs. If the fermion masses are smaller than the confinement scale
this realizes a type I two Higgs doublet model where a composite Higgs mixes
with the elementary Higgs. This class of models interpolates between an
elementary and a composite Higgs and has interesting phenomenology with
potentially observables effects in collider physics, EDMs and SM couplings but
very weak bounds from indirect searches. The very same framework can be used to
realize the cosmological relaxation of the electro-weak scale recently
discussed in the literature.Comment: 16 pages. v2 minor changes; v3 typos fixe
A test of bosonization at the level of four-point functions in
  Chern-Simons vector models

We study four-point functions in Chern-Simons vector models in the large $N$
limit. We compute the four-point function of the scalar primary to all orders
in the `t Hooft coupling $\lambda=N/k$ in $U(N)_k$ Chern-Simons theory coupled
to a fundamental fermion, in both the critical and non-critical theory, for a
particular case of the external momenta. These theories cover the entire
3-parameter "quasi-boson" and 2-parameter "quasi-fermion" families of
3-dimensional quantum field theories with a slightly-broken higher spin
symmetry. Our results are consistent with the celebrated bosonization duality,
as we explicitly verify by calculating four-point functions in the free
critical and non-critical bosonic theories.Comment: 20 pages, various improvement
The Order $\mathcal{O}(\alpha_t\alpha_s)$ Corrections to the Trilinear
  Higgs Self-Couplings in the Complex NMSSM

A consistent interpretation of the Higgs data requires the same precision in
the Higgs boson masses and in the trilinear Higgs self-couplings, which are
related through their common origin from the Higgs potential. In this work we
provide the two-loop corrections at order ${\cal O}(\alpha_t \alpha_s)$ in the
approximation of vanishing external momenta to the trilinear Higgs
self-couplings in the CP-violating Next-to-Minimal Supersymmetric extension of
the Standard Model (NMSSM). In the top/stop sector two different
renormalization schemes have been implemented, the OS and the
$\overline{\text{DR}}$ scheme. The two-loop corrections to the self-couplings
are of the order of 10\% in the investigated scenarios. The theoretical error,
estimated both from the variation of the renormalization scale and from the
change of the top/stop sector renormalization scheme, has been shown to be
reduced due to the inclusion of the two-loop corrections.Comment: 31 pages, 7 figure
Excited States of Open Strings From $\mathcal{N}=4$ SYM

We continue the analysis of building open strings stretched between giant
gravitons from $\mathcal{N}=4$ SYM by going to second order in perturbation
theory using the three-loop dilatation generator from the field theory. In the
process we build a Fock-like space of states using Cuntz oscillators which can
be used to access the excited open string states. We find a remarkable
cancellation among the excited states that shows the ground state energy is
consistent with a fully relativistic dispersion relation.Comment: 33 pages. Typos fixe
Exploring top quark FCNC within 2HDM type III in association with flavor
  physics

The top quark flavor changing neutral current (FCNC) process is an excellent
probe to search for new physics in top sector since the Standard Model
expectation is extremely suppressed. We explore Higgs-mediated top quark FCNC,
focusing on $H$-$t$-$c$ Yukawa coupling $\lambda_{ct}$ within the general two
Higgs doublet model. After electroweak symmetry breaking the top quark FCNC
couplings are included in the charged Higgs Yukawa sector so that they
contribute to various processes in flavor physics. To probe $\lambda_{ct}$, we
study anomalous single top production and the same sign top pair production at
the LHC in association with flavor physics from the tree-level processes $B\to
D^{(*)}\tau\nu$, $B\to \tau \nu$ as well as from the loop-level processes $B_d
\to X_s \gamma$, $B_{d,s}-{\overline B}_{d,s}$ mixing. We perform combined
analysis of all the constraints regarding the fine-tuning argument to fit the
data and discuss future prospect. The recently updated measurements on $B\to
D^{(*)}\tau\nu$ still prefer large $\lambda_{ct}$, but we show that the current
bound on the same sign top pair production at the LHC gives the most
significant upper bound on $\lambda_{ct}$ to be less than $10\sim30$ depending
on neutral heavy Higgs masses. We also find that for the given upper bound on
$\lambda_{ct}$, $B\to D^{(*)}\tau\nu$ put significant lower bound on
$H$-$\tau$-$\tau$ Yukawa coupling, and the bound is proportional to the charged
Higgs mass.Comment: 29 pages, 9 figures; modified version published in JHE
String Theory Realizations of the Nilpotent Goldstino

We describe in detail how the spectrum of a single anti-D3-brane in
four-dimensional orientifolded IIB string models reproduces precisely the field
content of a nilpotent chiral superfield with the only physical component
corresponding to the fermionic goldstino. In particular we explicitly consider
a single anti-D3-brane on top of an O3-plane in warped throats, induced by
$(2,1)$ fluxes. More general systems including several anti-branes and other
orientifold planes are also discussed. This provides further evidence to the
claim that non-linearly realized supersymmetry due to the presence of
antibranes in string theory can be described by supersymmetric theories
including nilpotent superfields. Implications to the KKLT and related scenarios
of de Sitter moduli stabilization, to cosmology and to the structure of soft
SUSY-breaking terms are briefly discussed.Comment: 33 pages, 8 figures. v2: reference added, minor change
Lepton Flavor Violation in the Inert Scalar Model with Higher
  Representations

We investigate the lepton flavor violation (LFV) in the inert scalar model
with higher representations. We generalize the inert doublet model with right
handed neutrino by using higher scalar and fermion representation of
$SU(2)_{L}$. As the generalized model and the inert doublet model have the same
parameter space, we compare the rates of $\mu\rightarrow e\gamma$,
$\mu\rightarrow ee\overline{e}$ and $\mu-e$ conversion in nuclei in the doublet
and its immediate extension, the quartet model. We show that the corresponding
rates are larger in the case of higher representation compared to the Inert
doublet for the same region of parameter space. This implies that such extended
models are more constrained by current LFV bounds and will have better
prospects in future experiments.Comment: section 4 is improved by including the discussion on the Sommerfeld
  enhancement. Version published in JHE
Holographic vortices in the presence of dark matter sector

The {\it dark matter} seem to be an inevitable ingredient of the total matter
configuration in the Universe and the knowledge how the {\it dark matter}
affects the properties of superconductors is of vital importance for the
experiments aimed at its direct detection. The homogeneous magnetic field
acting perpendicularly to the surface of (2+1) dimensional s-wave holographic
superconductor in the theory with {\it dark matter} sector has been modeled by
the additional $U(1)$-gauge field representing dark matter and coupled to the
Maxwell one. As expected the free energy for the vortex configuration turns out
to be negative. Importantly its value is lower in the presence of {\it dark
matter} sector. This feature can explain why in the Early Universe first the
web of {\it dark matter} appeared and next on these gratings the ordinary
matter forming cluster of galaxies has formed.Comment: 23 pages, JHEP-styl
On the Shape Dependence of Entanglement Entropy

We study the shape dependence of entanglement entropy (EE) by deforming
symmetric entangling surfaces. We show that entangling surfaces with a
rotational or translational symmetry extremize (locally) the EE with respect to
shape deformations that break some of the symmetry (i.e. the 1st order
correction vanishes). This result applies to EE and Renyi entropy for any QFT
in any dimension. Using Solodukhin's formula in $4d$ and holography in any $d$,
we calculate the 2nd order correction to the universal EE for CFTs and simple
symmetric entangling surfaces. In all cases we find that the 2nd order
correction is positive, and thus the corresponding symmetric entangling surface
is a local minimum. Some of the results are extended to free massive fields and
to 4d Renyi entropy.Comment: 24 pages, 2 figures, minor changes, added reference
New Constraints on Higgs-portal Scalar Dark Matter

The simplest Higgs-portal scalar dark matter model, in which a real scalar
singlet is added to the standard model, has been revisited, by taking into
account the constraints from perturbativity, electroweak vacuum stability in
the early Universe, dark matter direct detection, and Higgs invisible decay at
the LHC. We show that the {\it resonant mass region} is totally excluded and
the {\it high mass region} is reduced to a narrow window $1.1$ ~TeV $\leq m_{s}
\leq$ $ 2.55$~ TeV, which is slightly reduced to $1.1$~TeV $\leq m_{s} \leq$ $
2.0$~ TeV if the perturbativity is further imposed. This {\it high mass range}
can be fully detected by the Xenon 1T experiment.Comment: 14 pages, 6 figures; v2: title changed, typos corrected and
  references added; v3 minor changes, journal versio
Noncommutative gauge theories on $\mathbb{R}^3_\lambda$: Perturbatively
  finite models

We show that natural noncommutative gauge theory models on
$\mathbb{R}^3_\lambda$ can accommodate gauge invariant harmonic terms, thanks
to the existence of a relationship between the center of $\mathbb{R}^3_\lambda$
and the components of the gauge invariant 1-form canonical connection. This
latter object shows up naturally within the present noncommutative differential
calculus. Restricting ourselves to positive actions with covariant coordinates
as field variables, a suitable gauge-fixing leads to a family of matrix models
with quartic interactions and kinetic operators with compact resolvent. Their
perturbative behavior is then studied. We first compute the 2-point and 4-point
functions at the one-loop order within a subfamily of these matrix models for
which the interactions have a symmetric form. We find that the corresponding
contributions are finite. We then extend this result to arbitrary order. We
find that the amplitudes of the ribbon diagrams for the models of this
subfamily are finite to all orders in perturbation. This result extends finally
to any of the models of the whole family of matrix models obtained from the
above gauge-fixing. The origin of this result is discussed. Finally, the
existence of a particular model related to integrable hierarchies is indicated,
for which the partition function is expressible as a product of ratios of
determinants.Comment: 27 page
Strong CP and SUZ$_2$

Solutions to the strong CP problem typically introduce new scales associated
with the spontaneous breaking of symmetries. Absent any anthropic argument for
small $\bar\theta$, these scales require stabilization against ultraviolet
corrections. Supersymmetry offers a tempting stabilization mechanism, since it
can solve the "big" electroweak hierarchy problem at the same time. One family
of solutions to strong CP, including generalized parity models, heavy axion
models, and heavy $\eta^\prime$ models, introduces $\mathbb{Z}_2$ copies of
(part of) the Standard Model and an associated scale of
$\mathbb{Z}_2$-breaking. We review why, without additional structure such as
supersymmetry, the $\mathbb{Z}_2$-breaking scale is unacceptably tuned. We then
study "SUZ$_2$" models, supersymmetric theories with $\mathbb{Z}_2$ copies of
the MSSM. We find that the addition of SUSY typically destroys the
$\mathbb{Z}_2$ protection of $\bar\theta=0$, even at tree level, once SUSY and
$\mathbb{Z}_2$ are broken. In theories like supersymmetric completions of the
twin Higgs, where $\mathbb{Z}_2$ addresses the little hierarchy problem but not
strong CP, two axions can be used to relax $\bar\theta$.Comment: 18 pp, v2: refs adde
Puzzles of eta-deformed AdS_5 x S^5

We derive the part of the Lagrangian for the sigma model on the eta-deformed
AdS_5 x S^5 space which is quadratic in fermions and has the full dependence on
bosons. We then show that there exists a field redefinition which brings the
corresponding Lagrangian to the standard form of type IIB Green-Schwarz
superstring. Reading off the corresponding RR couplings, we observe that they
fail to satisfy the supergravity equations of motion, despite the presence of
kappa-symmetry. However, in a special scaling limit our solution reproduces the
supergravity background found by Maldacena and Russo. Further, using the
fermionic Lagrangian, we compute a number of new matrix elements of the tree
level world-sheet scattering matrix. We then show that after a unitary
transformation on the basis of two-particle states which is not one-particle
factorisable, the corresponding T-matrix factorises into two equivalent parts.
Each part satisfies the classical Yang-Baxter equation and coincides with the
large tension limit of the q-deformed S-matrix.Comment: 59 pages, 1 figure, v2: minor correction
Fermionic Symmetry Protected Topological Phases and Cobordisms

It has been proposed recently that interacting Symmetry Protected Topological
(SPT) phases can be classified using cobordism theory. We test this proposal in
the case of fermionic SPT phases with Z/2 symmetry, where Z/2 is either
time-reversal or an internal symmetry. We find that cobordism classification
correctly describes all known fermionic SPT phases in space dimension less than
or equal to 3 and also predicts that all such phases can be realized by free
fermions. In higher dimensions we predict the existence of inherently
interacting fermionic SPT phases.Comment: 26 pages, new references added and a new section on decorated domain
  walls in v
Walking on the Ladder: 125 GeV Technidilaton, or Conformal Higgs
  -Dedicated to the late Professor Yoichiro Nambu-

The walking technicolor based on the ladder Schwinger-Dyson gap equation is
studied, with the scale-invariant coupling being an idealization of the
Caswell-Banks-Zaks infrared fixed point in the "anti-Veneziano limit", such
that $N_C \rightarrow \infty$ with $N_C \cdot \alpha(\mu^2)=$ fixed and
$N_F/N_C=$ fixed ($\gg 1$), of the $SU(N_C)$ gauge theory with massless $N_F$
flavors near criticality. We show that the 125 GeV Higgs can be naturally
identified with the technidilaton (TD) predicted in the walking technicolor, a
pseudo Nambu-Goldstone (NG) boson of the spontaneous symmetry breaking of the
approximate scale symmetry. Ladder calculations yield the TD mass $M_\phi$ from
the trace anomaly as $M_\phi^2 F_\phi^2= -4 \langle \theta_\mu^\mu \rangle = -
\frac{\beta(\alpha (\mu^2))}{\alpha(\mu^2)}\, \langle G_{\lambda
\nu}^2(\mu^2)\rangle \simeq N_C N_F\frac{16}{\pi^4} m_F^4$, independently of
the renormalization point $\mu$, where $m_F$ is the dynamical mass of the
technifermion, and $F_\phi={\cal O} (\sqrt{N_F N_C}\, m_F)$ the TD decay
constant. It reads $M_\phi^2\simeq (\frac{v_{\rm EW}}{2} \cdot \frac{5 v_{\rm
EW}}{F_\phi})^2 \cdot [\frac{8}{N_F}\frac{4}{N_C}]$, ($v_{\rm EW}=246$ GeV),
which implies $F_\phi\simeq 5 \,v_{\rm EW} $ for $M_\phi \simeq 125\, {\rm
GeV}\simeq \frac{1}{2} v_{\rm EW}$ in the one-family model ($N_C=4, N_F=8$), in
good agreement with the current LHC Higgs data. The result reflects a generic
scaling $ M_\phi^2/v_{\rm EW}^2\sim M_\phi^2/F_\phi^2 \sim m_F^2 /F_\phi^2 \sim
1/(N_F N_C) \rightarrow 0 $ as a vanishing trace anomaly, namely the TD has a
mass vanishing in the anti-Veneziano limit, similarly to $\eta^\prime$ meson as
a pseudo-NG boson of the ordinary QCD with vanishing $U(1)_A$ anomaly in the
Veneziano limit ($N_F/N_C \ll 1$).Comment: revtex4, 36 pages, 7 eps figures, some corrections made, references
  added; a version to appear in JHEP; typo correcte
Holography and quantum states in elliptic de Sitter space

We outline a program for interpreting the higher-spin dS/CFT model in terms
of physics in the causal patch of a dS observer. The proposal is formulated in
"elliptic" de Sitter space dS_4/Z_2, obtained by identifying antipodal points
in dS_4. We discuss recent evidence that the higher-spin model is especially
well-suited for this, since the antipodal symmetry of bulk solutions has a
simple encoding on the boundary. For context, we test some other (free and
interacting) theories for the same property. Next, we analyze the notion of
quantum field states in the non-time-orientable dS_4/Z_2. We compare the
physics seen by different observers, with the outcome depending on whether they
share an arrow of time. Finally, we implement the marriage between higher-spin
holography and observers in dS_4/Z_2, in the limit of free bulk fields. We
succeed in deriving an observer's operator algebra and Hamiltonian from the
CFT, but not her S-matrix. We speculate on the extension of this to interacting
higher-spin theory.Comment: 58 pages + 7 pages of appendices, 3 figure