pinecone/core-2020-05-10-deduplication huggingface dataset:
CP4 miracle: shaping Yukawa sector with CP symmetry of order four

We explore the phenomenology of a unique three-Higgs-doublet model based on
the single CP symmetry of order 4 (CP4) without any accidental symmetries. The
CP4 symmetry is imposed on the scalar potential and Yukawa interactions,
strongly shaping both sectors of the model and leading to a very characteristic
phenomenology. The scalar sector is analyzed in detail, and in the Yukawa
sector we list all possible CP4-symmetric structures which do not run into
immediate conflict with experiment, namely, do not lead to massless or
mass-degenerate quarks nor to insufficient mixing or CP-violation in the CKM
matrix. We show that the parameter space of the model, although very
constrained by CP4, is large enough to comply with the electroweak precision
data and the LHC results for the 125 GeV Higgs boson phenomenology, as well as
to perfectly reproduce all fermion masses, mixing, and CP violation. Despite
the presence of flavor changing neutral currents mediated by heavy Higgs
scalars, we find through a parameter space scan many points which accurately
reproduce the kaon CP-violating parameter $\epsilon_K$ as well as oscillation
parameters in K and $B_{(s)}$ mesons. Thus, CP4 offers a novel minimalistic
framework for building models with very few assumptions, sufficient predictive
power, and rich phenomenology yet to be explored.Comment: 39 pages, 8 figures, 1 table; v2: expanded discussion, extra
  references, matches published versio
Decay of Ultralight Axion Condensates

Axion particles can form macroscopic condensates, whose size can be galactic
in scale for models with very small axion masses $m\sim10^{-22}$ eV, and which
are sometimes referred to under the name of Fuzzy Dark Matter. Many analyses of
these condensates are done in the non-interacting limit, due to the weakness of
the self-interaction coupling of axions. We investigate here how certain
results change upon inclusion of these interactions, finding a decreased
maximum mass and a modified mass-radius relationship. Further, these
condensates are, in general, unstable to decay through number-changing
interactions. We analyze the stability of galaxy-sized condensates of
axion-like particles, and sketch the parameter space of stable configurations
as a function of a binding energy parameter. We find a strong lower bound on
the size of Fuzzy Dark Matter condensates which are stable to decay, with
lifetimes longer than the age of the universe.Comment: 24 pages, 2 figures. v2: Added brief discussion of angular momentum;
  extended Appendix A; typos correcte
Distinguishing charged Higgs bosons from different representations at
  the LHC

Extending the Standard Model (SM) scalar sector via one or multiple Higgs
field(s) in higher representation brings one or more charged Higgs bosons in
the spectrum. Some of these gauge representations with appropriate hypercharge
can bring up doubly charged Higgs boson and can be easily distinguished from
the existing models with only singly charged Higgs boson. In this study we
focus on distinguishing the singly charged Higgs bosons from different
representations, viz. doublets and triplets of $SU(2)_L$ gauge group. We
consider a supersymmetric extension of SM with a gauge singlet and $SU(2)_L$
triplet with $Y=0$ as a benchmark scenario with the possibility of rich
phenomenology due to existence of light pseudoscalar for $Z_3$ symmetric
superpotential. A detailed collider simulation considering all the SM
backgrounds has been carried out in order to classify the final states which
are favourable to charged Higgs boson from one particular representation than
others. We show that such different representations can be probed an
distinguished via looking at single charged Higgs boson phenomenology at the
LHC with 14 TeV center of mass energy within $\sim 50$ fb$^{-1}$ of integrated
luminosity.Comment: 28 pages, 14 figures, 14 tables. updated version with references
  reordere
Charged BTZ-like black hole solutions and the diffusivity-butterfly
  velocity relation

We show that there exists a class of charged BTZ-like black hole solutions in
Lifshitz spacetime with a hyperscaling violating factor. The charged BTZ is
characterized by a charge-dependent logarithmic term in the metric function. As
concrete examples, we give five such charged BTZ-like black hole solutions and
the standard charged BTZ metric can be regarded as a special instance of them.
In order to check the recent proposed universal relations between diffusivity
and the butterfly velocity, we first compute the diffusion constants of the
standard charged BTZ black holes and then extend our calculation to arbitrary
dimension $d$, exponents $z$ and $\theta$. Remarkably, the case $d=\theta$ and
$z=2$ is a very special in that the charge diffusion $D_c$ is a constant and
the energy diffusion $D_e$ might be ill-defined, but $v^2_B\tau$ diverges. We
also compute the diffusion constants for the case that the DC conductivity is
finite but in the absence of momentum relaxation.Comment: 30 pages, 2 figure
A Gluing Operator for the Ambitwistor String

We present a new operator in the ambitwistor string which glues together
correlators with fewer points or of lower genus. It underpins the recursive
construction of tree-level CHY scattering amplitudes by Dolan \& Goddard, as
well as the computation of loop integrands on a Riemann sphere by Geyer et al.
The gluing operator is a tractable object due to the finiteness of the
spectrum. In particular, we demonstrate how it gives rise to the complete
one-loop integrand in SYM and SUGRA. The operator is conjectured to be the path
integral incarnation of the ambitwistor string propagator, and to coincide with
the field theory limit of the standard string theory propagator
Collinear and TMD Quark and Gluon Densities from Parton Branching
  Solution of QCD Evolution Equations

We study parton-branching solutions of QCD evolution equations and present a
method to construct both collinear and transverse momentum dependent (TMD)
parton densities from this approach. We work with next-to-leading-order (NLO)
accuracy in the strong coupling. Using the unitarity picture in terms of
resolvable and non-resolvable branchings, we analyze the role of the soft-gluon
resolution scale in the evolution equations. For longitudinal momentum
distributions, we find agreement of our numerical calculations with existing
evolution programs at the level of better than 1 percent over a range of five
orders of magnitude both in evolution scale and in longitudinal momentum
fraction. We make predictions for the evolution of transverse momentum
distributions. We perform fits to the high-precision deep inelastic scattering
(DIS) structure function measurements, and we present a set of NLO TMD
distributions based on the parton branching approach.Comment: 27 pages, 8 figure
Penrose limits of Abelian and non-Abelian T-duals of $AdS_5\times S^5$
  and their field theory duals

We consider the backgrounds obtained by Abelian and non-Abelian T-duality
applied on $AdS_5\times S^5$. We study geodesics, calculate Penrose limits and
find the associated plane-wave geometries. We quantise the weakly coupled
type-IIA string theory on these backgrounds. We study the BMN sector, finding
operators that wrap the original quiver CFT. For the non-Abelian plane wave, we
find a 'flow' in the frequencies. We report some progress to understand this,
in terms of deconstruction of a higher dimensional field theory. We explore a
relation with the plane-wave limit of the Janus solution, which we also
provide.Comment: 57 pages, no figure
A covariantisation of M5-brane action in dual formulation

We construct a manifestly diffeomorphic M5-brane action in dual formulation
coupled to an eleven-dimensional supergravity target space. The
covariantisation is carried out by using (generalised) PST technique with 5
auxiliary scalar fields, which are obtained by using a geometrical
consideration as a reduction of an auxiliary 4-form of
Maznytsia-Preitschopf-Sorokin. As is typical in PST-covariantised theory, our
construction possesses as usual the two local PST symmetries. By using one of
the local PST symmetries, the action can be reduced to the non-manifestly
covariant M5-brane action in dual formulation constructed earlier by the
authors. The discussion on double dimensional reduction to D4-brane, and on the
comparison of on-shell action then easily follows.Comment: 26 page
The Higher Spin Rectangle

The chiral algebra of the symmetric product orbifold of a single-boson CFT
corresponds to a "higher spin square" algebra in the large $N$ limit. In this
note, we show that a symmetrized collection of $N$ bosons defines a similar
structure that we refer to as the higher spin rectangle algebra. We explore the
relation of this algebra to the higher spin square algebra. The existence of
such a truncated algebra hints at bulk theories interpolating between Vasiliev
higher spin theory and string theory.Comment: 21 pages, 2 figures, Added clarifications, Version to appear in JHE
The Principle of Maximal Transcendentality and the Four-Loop Collinear
  Anomalous Dimension

We use the principle of maximal transcendentality and the universal nature of
subleading infrared poles to extract the analytic value of the four-loop
collinear anomalous dimension in planar ${\cal N}=4$ super-Yang-Mills theory
from recent QCD results, obtaining $\hat{\cal G}_{0}^{(4)} = - 300 \zeta_7 -
256 \zeta_2 \zeta_5 - 384 \zeta_3 \zeta_4$. This value agrees with a previous
numerical result to within 0.2 percent. It also provides the Regge trajectory,
threshold soft anomalous dimension and rapidity anomalous dimension through
four loops.Comment: 12 pages, no figures. v2, references adde
Diffusion in higher dimensional SYK model with complex fermions

We construct a new higher dimensional SYK model with complex fermions on
bipartite lattices. As an extension of the original zero-dimensional SYK model,
we focus on the one-dimension case, and similar Hamiltonian can be obtained in
higher dimensions. This model has a conserved U(1) fermion number Q and a
conjugate chemical potential \mu. We evaluate the thermal and charge diffusion
constants via large q expansion at low temperature limit. The results show that
the diffusivity depends on the ratio of free Majorana fermions to Majorana
fermions with SYK interactions. The transport properties and the butterfly
velocity are accordingly calculated at low temperature. The specific heat and
the thermal conductivity are proportional to the temperature. The electrical
resistivity also has a linear temperature dependence term.Comment: 15 pages, 1 figure, add 4 references and fix some typos in this
  versio
Inverse Bootstrapping Conformal Field Theories

We propose a novel approach to study conformal field theories (CFTs) in
general dimensions. In the conformal bootstrap program, one usually searches
for consistent CFT data that satisfy crossing symmetry. In the new approach, we
reverse the logic and interpret manifestly crossing-symmetric functions as
generating functions of conformal data. Physical CFTs can be obtained by
scanning the space of symmetric functions. By truncating the fusion rules, we
are able to concentrate on the low-lying operators and derive some approximate
relations for their conformal data. It turns out that the free scalar theory,
the 2d minimal model CFTs, the $\phi^{4}$ Wilson-Fisher CFT, the Lee-Yang CFTs
and the Ising CFTs are consistent with the universal relations from the minimal
fusion rule $\phi_1\times \phi_1=I+\phi_2+T$, where $\phi_1,\,\phi_2$ are
scalar operators, $I$ is the identity operator and $T$ is the stress tensor.Comment: 38 pages, 2 figures. v2: 39 pages, 2 figures, typos fixed, references
  added, names of cutoffs changed, emphasis added about the convergence of the
  truncation ansatz. v3: typos fixed, final versio
Holographic calcualtion of the magneto-transport coefficients in Dirac
  semimetals

Based on the gauge/gravity correspondence we have calculated the
thermoelectric kinetic and transport characteristics of the strongly
interacting materials in the presence of perpendicular magnetic field. The 3+1
dimensional system with Dirac-like spectrum is considered as a strongly
interacting one if it is close to the particle-hole symmetry point. Transport
in such system has been modeled by the two interacting vector fields. In the
holographic theory the momentum relaxation is caused by axion field and leads
to finite values of the direct current transport coefficients. We have
calculated conductivity tensor in the presence of mutually perpendicular
electric and magnetic fields and temperature gradient. The geometry differs
from that in which magnetic field lies in the same plane as an electric one and
temperature gradient.Comment: 26 pages, 7 figure
One-loop effective actions and higher spins. II

In this paper we continue and improve the analysis of the effective actions
obtained by integrating out a scalar and a fermion field coupled to external
symmetric sources, started in the previous paper. The first subject we study is
the geometrization of the results obtained there, that is we express them in
terms of covariant Jacobi tensors. The second subject concerns the treatment of
tadpoles and seagull terms in order to implement off-shell covariance in the
initial model. The last and by far largest part of the paper is a repository of
results concerning all two point correlators (including mixed ones) of
symmetric currents of any spin up to 5 and in any dimensions between 3 and 6.
In the massless case we also provide formulas for any spin in any dimension.Comment: 151 page
Entropy, Extremality, Euclidean Variations, and the Equations of Motion

We study the Euclidean gravitational path integral computing the Renyi
entropy and analyze its behavior under small variations. We argue that, in
Einstein gravity, the extremality condition can be understood from the
variational principle at the level of the action, without having to solve
explicitly the equations of motion. This set-up is then generalized to
arbitrary theories of gravity, where we show that the respective entanglement
entropy functional needs to be extremized. We also extend this result to all
orders in Newton's constant $G_N$, providing a derivation of quantum
extremality. Understanding quantum extremality for mixtures of states provides
a generalization of the dual of the boundary modular Hamiltonian which is given
by the bulk modular Hamiltonian plus the area operator, evaluated on the
so-called modular extremal surface. This gives a bulk prescription for
computing the relative entropies to all orders in $G_N$. We also comment on how
these ideas can be used to derive an integrated version of the equations of
motion, linearized around arbitrary states.Comment: 37 pages; v2: typos fixed and new references added; v3: new
  references and minor clarifications adde
Quantum-correlated measurements of $D\to K^{0}_{\rm
  S}\pi^{+}\pi^{-}\pi^{0}$ decays and consequences for the determination of the
  CKM angle $\gamma$

We perform quantum-correlated measurements of the decay $D \to K^{0}_{\rm
S}\pi^{+}\pi^{-}\pi^{0}$ using a data sample corresponding to an integrated
luminosity of 0.82 fb$^{-1}$ collected at the $\psi(3770)$ resonance by the
CLEO-c detector. The value of the $CP$-even fraction $F_{+}$ is determined to
be 0.238 $\pm$ 0.012 $\pm$ 0.012. The strong-phase differences are also
measured in different regions of $K^{0}_{\rm S}\pi^{+}\pi^{-}\pi^{0}$ phase
space by binning around the intermediate resonances present. The potential
sensitivity of the results for determining the CKM angle $\gamma$ from $B^{\pm}
\to D(K^{0}_{\rm S}\pi^{+}\pi^{-}\pi^{0})K^{\pm}$ decays is also discussed
Oscillons from String Moduli

A generic feature of string compactifications is the presence of many scalar
fields, called moduli. Moduli are usually displaced from their
post-inflationary minimum during inflation. Their relaxation to the minimum
could lead to the production of oscillons: localised, long-lived, non-linear
excitations of the scalar fields. Here we discuss under which conditions
oscillons can be produced in string cosmology and illustrate their production
and potential phenomenology with two explicit examples: the case of an
initially displaced volume modulus in the KKLT scenario and the case of a
displaced blow-up Kaehler modulus in the Large Volume Scenario (LVS). One, in
principle, observable consequence of oscillon dynamics is the production of
gravitational waves which, contrary to those produced from preheating after
high scale inflation, could have lower frequencies, closer to the currently
observable range. We also show that, for the considered parameter ranges,
oscillating fibre and volume moduli do not develop any significant
non-perturbative dynamics. Furthermore, we find that the vacua in the LVS and
the KKLT scenario are stable against local overshootings of the field into the
decompatification region, which provides an additional check on the longevity
of these metastable configurations.Comment: 32 pages + appendix, 23 figures, for videos of the simulations see
  https://particlesandcosmology.unibas.ch/downloads/oscillons-from-string-moduli-movies.htm
Low-Energy Effective Field Theory below the Electroweak Scale: Anomalous
  Dimensions

We compute the one-loop anomalous dimensions of the low-energy effective
Lagrangian below the electroweak scale, up to terms of dimension six. The
theory has 70 dimension-five and 3631 dimension-six Hermitian operators that
preserve baryon and lepton number, as well as additional operators that violate
baryon number and lepton number. The renormalization group equations for the
quark and lepton masses and the QCD and QED gauge couplings are modified by
dimension-five and dimension-six operator contributions. We compute the
renormalization group equations from one insertion of dimension-five and
dimension-six operators, as well as two insertions of dimension-five operators,
to all terms of dimension less than or equal to six. The use of the equations
of motion to eliminate operators can be ambiguous, and we show how to resolve
this ambiguity by a careful use of field redefinitions.Comment: 50 pages, 2 tables, 144 diagrams; version published in JHE
't Hooft anomalies and boundaries

We argue that there is an obstruction to placing theories with 't Hooft
anomalies on manifolds with a boundary, unless the symmetry associated with the
anomaly can be represented as a non-invariance under an Abelian transformation.
For a two dimensional conformal field theory we further demonstrate that all
anomalies except the usual trace anomaly are incompatible on a manifold with a
boundary. Our findings extend a known result whereby, under mild assumptions,
Lagrangian theories with chiral matter cannot be canonically quantized.Comment: 23 pages; v2: refs adde
AdS4 backgrounds with N>16 supersymmetries in 10 and 11 dimensions

We explore all warped $AdS_4\times_w M^{D-4}$ backgrounds with the most
general allowed fluxes that preserve more than 16 supersymmetries in $D=10$-
and $11$-dimensional supergravities. After imposing the assumption that either
the internal space $M^{D-4}$ is compact without boundary or the isometry
algebra of the background decomposes into that of AdS$_4$ and that of
$M^{D-4}$, we find that there are no such backgrounds in IIB supergravity.
Similarly in IIA supergravity, there is a unique such background with 24
supersymmetries locally isometric to $AdS_4\times \mathbb{CP}^3$, and in $D=11$
supergravity all such backgrounds are locally isometric to the maximally
supersymmetric $AdS_4\times S^7$ solution.Comment: 53 pages. v2: minor changes and references added. v3: typos corrected
  and minor footnote added, published versio
Electroweak Baryogenesis and the Standard Model Effective Field Theory

We investigate electroweak baryogenesis within the framework of the Standard
Model Effective Field Theory. The Standard Model Lagrangian is supplemented by
dimension-six operators that facilitate a strong first-order electroweak phase
transition and provide sufficient CP violation. Two explicit scenarios are
studied that are related via the classical equations of motion and are
therefore identical at leading order in the effective field theory expansion.
We demonstrate that formally higher-order dimension-eight corrections lead to
large modifications of the matter-antimatter asymmetry. The effective field
theory expansion breaks down in the modified Higgs sector due to the
requirement of a first-order phase transition. We investigate the source of the
breakdown in detail and show how it is transferred to the CP-violating sector.
We briefly discuss possible modifications of the effective field theory
framework.Comment: 21 pages + appendices. V2: Corrected a factor-2 mistake which has
  changed the results for the baryon asymmetry quantitatively. Main conclusions
  of the v1 still hol
Testing Subleading Multiple Soft Graviton Theorem for CHY Prescription

In arXiv:1707.06803 we derived the subleading multiple soft graviton theorem
in a generic quantum theory of gravity for arbitrary number of soft external
gravitons and arbitrary number of finite energy external states carrying
arbitrary mass and spin. In this paper we verify this explicitly using the CHY
formula for tree level scattering amplitudes of arbitrary number of gravitons
in Einstein gravity. We pay special care to fix the signs of the amplitudes and
resolve an apparent discrepancy between our general results in arXiv:1707.06803
and previous results on soft graviton theorem from CHY formula.Comment: 64 pages; v2: added footnote 3 clarifying gauge condition, other
  minor change
NNLO QCD Corrections to $\gamma + \eta_c(\eta_b)$ Exclusive Production
  in Electron-Positron Collision

Based on the NRQCD factorization formalism, we calculate the
next-to-next-to-leading order QCD corrections to the heavy quarkonium $\eta_c
(\eta_b)$ production associated with a photon at electron-positron colliders.
By matching the amplitudes calculated in full QCD theory to a series of
operators in NRQCD, the short-distance coefficients up to NNLO QCD radiative
corrections are determined. It turns out that the full set of master integrals
that we obtained could be analytically expressed in terms of Goncharov
Polylogarithms, Chen's iterated integrals, and elliptic functions, which mostly
do not exist in the literature and could be employed in the analyses of other
physical processes. In phenomenology, numerical calculations of NNLO K-factors
and cross sections of $e^+e^-\rightarrow \gamma + \eta_c(\eta_b)$ processes in
BESIII and B-factory experiments are performed, which may stand as a test of
the NRQCD higher order calculation while confronting to the data.Comment: 12 pages, 5 firue
Composite Higgs models in disguise

We present a mechanism for disguising one composite Higgs model as another.
Allowing the global symmetry of the strong sector to be broken by large mixings
with elementary fields, we show that we can disguise one coset $\mathcal
G/\mathcal H$ such that at low energies the phenomenology of the model is
better described with a different coset $\mathcal G'/\mathcal H'$. Extra scalar
fields acquire masses comparable to the rest of the strong sector resonances
and therefore are no longer considered pNGBs. Following this procedure we
demonstrate that two models with promising UV-completions can be disguised as
the more minimal $SO(5)/SO(4)$ coset