Preview: Recent Articles in Phys. Rev. D
Recent Articles in Phys. Rev. D
Recent articles in Physical Review D
Published: 2016-10-26T17:07:40-04:00
Nondipolar Wilson links for quasiparton distribution functions
2016-10-26T10:00:00-04:00
Author(s): Hsiang-nan Li
We propose a modified definition for a quasiparton distribution function (QPDF) with an equal-time correlator in the large momentum limit, whose two pieces of spacelike Wilson links are oriented in orthogonal directions. It is explicitly shown at the one-loop level that the linear divergence in the …
[Phys. Rev. D 94, 074036] Published Wed Oct 26, 2016
Lattice calculation of the pion transition form factor π^{0} →γ^{*} γ^{*}
2016-10-26T10:00:00-04:00
Author(s): Antoine Gérardin, Harvey B. Meyer, and Andreas Nyffeler
The pion transition form factor for the neutral pion double virtual photon decay is computed in two flavor lattice QCD, extrapolated to the continuum physical point. Implications for the computation of the contribution of hadronic light-by-light scattering to the muon anomalous magnetic moment are discussed.
(image)
[Phys. Rev. D 94, 074507] Published Wed Oct 26, 2016
Position space method for the nucleon magnetic moment in lattice QCD
2016-10-26T10:00:00-04:00
Author(s): Constantia Alexandrou, Martha Constantinou, Giannis Koutsou, Konstantin Ottnad, and Marcus Petschlies
The extraction of the magnetic form factor of the nucleon at zero momentum transfer is usually performed by adopting a parametrization for its momentum dependence and fitting the results obtained at finite momenta. We present a position space method that allows us to remove the momentum prefactor in…
[Phys. Rev. D 94, 074508] Published Wed Oct 26, 2016
Vacuum alignment with and without elementary scalars
2016-10-26T10:00:00-04:00
Author(s): Tommi Alanne, Helene Gertov, Aurora Meroni, and Francesco Sannino
We systematically elucidate differences and similarities of the vacuum alignment issue in composite and renormalizable elementary extensions of the Standard Model featuring a pseudo-Goldstone Higgs. We also provide general conditions for the stability of the vacuum in the elementary framework, there…
[Phys. Rev. D 94, 075015] Published Wed Oct 26, 2016
125 GeV Higgs boson mass and muon g−2 in 5D MSSM
2016-10-26T10:00:00-04:00
Author(s): Nobuchika Okada and Hieu Minh Tran
In the minimal supersymmetric standard model (MSSM), the tension between the observed Higgs boson mass and the experimental result of the muon g−2 measurement requires a large mass splitting between stops and smuons/charginos/neutralinos. We consider a five-dimensional (5D) framework of the MSSM wit…
[Phys. Rev. D 94, 075016] Published Wed Oct 26, 2016
Anomalous mass dimension in multiflavor QCD
2016-10-26T10:00:00-04:00
Author(s): A. Doff and A. A. Natale
Models of strongly interacting theories with a large mass anomalous dimension (γ_{m}) provide an interesting possibility for the dynamical origin of the electroweak symmetry breaking. A laboratory for these models is QCD with many flavors, which may present a nontrivial fixed point associated to a c…
[Phys. Rev. D 94, 076005] Published Wed Oct 26, 2016
Coherent observations of gravitational radiation with LISA and gLISA
2016-10-26T10:00:00-04:00
Author(s): Massimo Tinto and José C. N. de Araujo
The geosynchronous Laser Interferometer Space Antenna (gLISA) is a space-based gravitational wave (GW) mission that, for the past 5 years, has been under joint study at the Jet Propulsion Laboratory; Stanford University; the National Institute for Space Research (I.N.P.E., Brazil); and Space Systems…
[Phys. Rev. D 94, 081101(R)] Published Wed Oct 26, 2016
Constraining spatial variations of the fine structure constant using clusters of galaxies and Planck data
2016-10-26T10:00:00-04:00
Author(s): I. de Martino, C. J. A. P. Martins, H. Ebeling, and D. Kocevski
We propose an improved methodology to constrain spatial variations of the fine structure constant using clusters of galaxies. We use the Planck 2013 data to measure the thermal Sunyaev-Zeldovich effect at the location of 618 x-ray selected clusters. We then use a Monte Carlo Markov Chain algorithm t…
[Phys. Rev. D 94, 083008] Published Wed Oct 26, 2016
Improvement of cosmological neutrino mass bounds
2016-10-26T10:00:00-04:00
Author(s): Elena Giusarma, Martina Gerbino, Olga Mena, Sunny Vagnozzi, Shirley Ho, and Katherine Freese
The most recent measurements of the temperature and low-multipole polarization anisotropies of the cosmic microwave background from the Planck satellite, when combined with galaxy clustering data from the Baryon Oscillation Spectroscopic Survey in the form of the full shape of the power spectrum, an…
[Phys. Rev. D 94, 083522] Published Wed Oct 26, 2016
Primordial black holes as dark matter in supergravity inflation models
2016-10-26T10:00:00-04:00
Author(s): Masahiro Kawasaki, Alexander Kusenko, Yuichiro Tada, and Tsutomu T. Yanagida
We propose a novel scenario to produce abundant primordial black holes (PBHs) in new inflation which is a second phase of a double inflation in the supergravity framework. In our model, some preinflation phase before the new inflation is assumed and it would be responsible for the primordial curvatu…
[Phys. Rev. D 94, 083523] Published Wed Oct 26, 2016
Magnetogenesis in bouncing cosmology
2016-10-26T10:00:00-04:00
Author(s): Peng Qian, Yi-Fu Cai, Damien A. Easson, and Zong-Kuan Guo
We consider the process of magnetogenesis in the context of nonsingular bounce cosmology. We show that large primordial magnetic fields can be generated during contraction without encountering strong coupling and backreaction issues. The fields may seed large-scale magnetic fields with observational…
[Phys. Rev. D 94, 083524] Published Wed Oct 26, 2016
Dark energy and dark matter from an additional adiabatic fluid
2016-10-26T10:00:00-04:00
Author(s): Peter K. S. Dunsby, Orlando Luongo, and Lorenzo Reverberi
The dark sector is described by an additional barotropic fluid which evolves adiabatically during the Universe’s history and whose adiabatic exponent γ is derived from the standard definitions of specific heats. Although in general γ is a function of the redshift, the Hubble parameter and its deriva…
[Phys. Rev. D 94, 083525] Published Wed Oct 26, 2016
Holographic entanglement entropy conjecture for general spacetimes
2016-10-26T10:00:00-04:00
Author(s): Fabio Sanches and Sean J. Weinberg
We present a natural generalization of holographic entanglement entropy proposals beyond the scope of AdS/CFT by anchoring extremal surfaces to holographic screens. Holographic screens are a natural extension of the AdS boundary to arbitrary spacetimes and are preferred codimension-1 surfaces from t…
[Phys. Rev. D 94, 084034] Published Wed Oct 26, 2016
Generalized SU(2) Proca theory
2016-10-26T10:00:00-04:00
Author(s): Erwan Allys, Patrick Peter, and Yeinzon Rodríguez
Following previous works on generalized Abelian Proca theory, also called vector Galileon, we investigate the massive extension of an SU(2) gauge theory, i.e., the generalized SU(2) Proca model, which could be dubbed non-Abelian vector Galileon. This particular symmetry group permits fruitful applic…
[Phys. Rev. D 94, 084041] Published Wed Oct 26, 2016
Scalar-tensor teleparallel wormholes by Noether symmetries
2016-10-26T10:00:00-04:00
Author(s): Sebastian Bahamonde, Ugur Camci, Salvatore Capozziello, and Mubasher Jamil
A gravitational theory of a scalar field nonminimally coupled with torsion and a boundary term is considered with the aim to construct Lorentzian wormholes. Geometrical parameters including shape and redshift functions are obtained for these solutions. We adopt the formalism of the Noether gauge sym…
[Phys. Rev. D 94, 084042] Published Wed Oct 26, 2016
Improved next-to-leading order tidal heating and torquing of a Kerr black hole
2016-10-26T10:00:00-04:00
Author(s): Katerina Chatziioannou, Eric Poisson, and Nicolás Yunes
We calculate the energy and angular-momentum fluxes across the event horizon of a tidally deformed, rapidly rotating black hole to next-to-leading order in the curvature of the external spacetime. These are expressed in terms of tidal quadrupole moments and their time derivatives, which provide a ch…
[Phys. Rev. D 94, 084043] Published Wed Oct 26, 2016
Symmetries of quantum spacetime in three dimensions
2016-10-26T10:00:00-04:00
Author(s): Francesco Cianfrani, Jerzy Kowalski-Glikman, Daniele Pranzetti, and Giacomo Rosati
By applying loop quantum gravity techniques to 3D gravity with a positive cosmological constant Λ, we show how the local gauge symmetry of the theory, encoded in the constraint algebra, acquires the quantum group structure of so_{q}(4), with q=exp(iℏsqrt[Λ]/2κ). By means of an Inonu-Wigner contracti…
[Phys. Rev. D 94, 084044] Published Wed Oct 26, 2016
Astrophysical imaging of Kerr black holes with scalar hair
2016-10-26T10:00:00-04:00
Author(s): F. H. Vincent, E. Gourgoulhon, C. Herdeiro, and E. Radu
We address the astrophysical imaging of a family of deformed Kerr black holes (BHs). These are stationary, asymptotically flat BH spacetimes that are solutions of general relativity minimally coupled to a massive, complex scalar field: Kerr BHs with scalar hair (KBHsSH). Such BHs bifurcate from the …
[Phys. Rev. D 94, 084045] Published Wed Oct 26, 2016
Gravitational action with null boundaries
2016-10-26T10:00:00-04:00
Author(s): Luis Lehner, Robert C. Myers, Eric Poisson, and Rafael D. Sorkin
The present paper provides a complete treatment of boundary terms in general relativity to include cases with lightlike boundary segments along with the usual spacelike and timelike ones. Applications of this exhaustive treatment includes a recent conjecture on computational complexity in the context of AdS/CFT.
(image)
[Phys. Rev. D 94, 084046] Published Wed Oct 26, 2016
From conformal to Einstein gravity
2016-10-26T10:00:00-04:00
Author(s): Giorgos Anastasiou and Rodrigo Olea
We provide a simple derivation of the equivalence between Einstein and conformal gravity (CG) with Neumann boundary conditions given by Maldacena. As Einstein spacetimes are Bach flat, a generic solution to CG would contain both Einstein and non-Einstein parts. Using this decomposition of the spacet…
[Phys. Rev. D 94, 086008] Published Wed Oct 26, 2016
Loop expansion and the bosonic representation of loop quantum gravity
2016-10-26T10:00:00-04:00
Author(s): E. Bianchi, J. Guglielmon, L. Hackl, and N. Yokomizo
We introduce a new loop expansion that provides a resolution of the identity in the Hilbert space of loop quantum gravity on a fixed graph. We work in the bosonic representation obtained by the canonical quantization of the spinorial formalism. The resolution of the identity gives a tool for impleme…
[Phys. Rev. D 94, 086009] Published Wed Oct 26, 2016
CP symmetry and lepton mixing from a scan of finite discrete groups
2016-10-25T10:00:00-04:00
Author(s): Chang-Yuan Yao and Gui-Jun Ding
Including the generalized CP symmetry, we have performed a comprehensive scan of leptonic mixing patterns that can be obtained from finite discrete groups with order less than 2000. Both the semidirect approach and its variant are considered. The lepton mixing matrices that can admit a good agreemen…
[Phys. Rev. D 94, 073006] Published Tue Oct 25, 2016
Probing the stau-neutralino coannihilation region at the LHC with a soft tau lepton and a jet from initial state radiation
2016-10-25T10:00:00-04:00
Author(s): Andrés Flórez, Luis Bravo, Alfredo Gurrola, Carlos Ávila, Manuel Segura, Paul Sheldon, and Will Johns
We present a feasibility study, to search for dark matter at the LHC, in events with one soft hadronically decaying tau lepton and missing transverse energy recoiling against a hard p_{T} jet from initial state radiation. This methodology allows the search for supersymmetry in compressed mass spectr…
[Phys. Rev. D 94, 073007] Published Tue Oct 25, 2016
Semileptonic decays of Λ_{b} baryons in the relativistic quark model
2016-10-25T10:00:00-04:00
Author(s): R. N. Faustov and V. O. Galkin
Semileptonic Λ_{b} decays are investigated in the framework of the relativistic quark model based on the quasipotential approach and the quark-diquark picture of baryons. The decay form factors are expressed through the overlap integrals of the initial and final baryon wave functions. All calculatio…
[Phys. Rev. D 94, 073008] Published Tue Oct 25, 2016
Density distributions in the B meson
2016-10-25T10:00:00-04:00
Author(s): Benoît Blossier and Antoine Gérardin
We report on a two-flavor lattice QCD study of the axial, charge, and matter distributions of the B meson and its first radial excitation. As our framework is the static limit of heavy quark effective theory (HQET), taking their Fourier transform gives access to several form factors at the kinematic…
[Phys. Rev. D 94, 074504] Published Tue Oct 25, 2016
Nucleon matrix elements using the variational method in lattice QCD
2016-10-25T10:00:00-04:00
Author(s): J. Dragos, R. Horsley, W. Kamleh, D. B. Leinweber, Y. Nakamura, P. E. L. Rakow, G. Schierholz, R. D. Young, and J. M. Zanotti
The extraction of hadron matrix elements in lattice QCD using the standard two- and three-point correlator functions demands careful attention to systematic uncertainties. One of the most commonly studied sources of systematic error is contamination from excited states. We apply the variational meth…
[Phys. Rev. D 94, 074505] Published Tue Oct 25, 2016
Finite volume effects on the electric polarizability of neutral hadrons in lattice QCD
2016-10-25T10:00:00-04:00
Author(s): M. Lujan, A. Alexandru, W. Freeman, and F. X. Lee
We study the finite volume effects on the electric polarizability for the neutron, neutral pion, and neutral kaon using eight dynamically generated two-flavor nHYP-clover ensembles at two different pion masses: 306(1) and 227(2) MeV. An infinite volume extrapolation is performed for each hadron at b…
[Phys. Rev. D 94, 074506] Published Tue Oct 25, 2016
Changes in extensive air showers from isotropic Lorentz violation in the photon sector
2016-10-25T10:00:00-04:00
Author(s): J. S. Díaz, F. R. Klinkhamer, and M. Risse
We consider a theory with isotropic nonbirefringent Lorentz violation in the photon sector and explore the effects on the development of the electromagnetic component of extensive air showers in the Earth atmosphere. Specifically, we consider the case of a “fast” photon with a phase velocity larger …
[Phys. Rev. D 94, 085025] Published Tue Oct 25, 2016
Charge and longitudinal momentum distributions in transverse coordinate space
2016-10-24T10:00:00-04:00
Author(s): C. Mondal, N. Kumar, H. Dahiya, and D. Chakrabarti
We investigate the charge distributions for the u and d quarks in transverse coordinate space in a light-front quark-diquark model for the nucleons using the overlaps of the wave functions constructed from the soft-wall AdS/QCD prediction. We have also obtained the charge distributions for proton an…
[Phys. Rev. D 94, 074028] Published Mon Oct 24, 2016
Gauge mediation models with adjoint messengers
2016-10-24T10:00:00-04:00
Author(s): Ilia Gogoladze, Azar Mustafayev, Qaisar Shafi, and Cem Salih Ün
We present a class of models in the framework of gauge mediation supersymmetry breaking where the messenger fields transform in the adjoint representation of the standard model gauge symmetry. To avoid unacceptably light right-handed sleptons in the spectrum we introduce a nonzero U(1)_{B−L} D-term.…
[Phys. Rev. D 94, 075012] Published Mon Oct 24, 2016
5D Lovelock gravity: New exact solutions with torsion
2016-10-24T10:00:00-04:00
Author(s): B. Cvetković and D. Simić
Five-dimensional Lovelock gravity is investigated in the first order formalism. A new class of exact solutions is constructed: the Bañados, Teitelboim, Zanelli black rings with and without torsion. We show that our solution with torsion exists in a different sector of the Lovelock gravity, as compar…
[Phys. Rev. D 94, 084037] Published Mon Oct 24, 2016
Existence of a constant mean curvature foliation in the extended Schwarzschild spacetime
2016-10-24T10:00:00-04:00
Author(s): Kuo-Wei Lee
We construct a T-axisymmetric, spacelike, spherically symmetric, constant mean curvature (CMC) hypersurface foliation in the Kruskal extension with properties such that the mean curvature varies in each slice and ranges from minus infinity to plus infinity. This family of hypersurfaces extends the C…
[Phys. Rev. D 94, 084038] Published Mon Oct 24, 2016
Solutions in the generalized Proca theory with the nonminimal coupling to the Einstein tensor
2016-10-24T10:00:00-04:00
Author(s): Masato Minamitsuji
We investigate the static and spherically symmetric solutions in a class of the generalized Proca theory with the nonminimal coupling to the Einstein tensor. First, we show that the solutions in the scalar-tensor theory with the nonminimal derivative coupling to the Einstein tensor can be those in t…
[Phys. Rev. D 94, 084039] Published Mon Oct 24, 2016
Anomaly matching condition in two-dimensional systems
2016-10-24T10:00:00-04:00
Author(s): O. Dubinkin, A. Gorsky, and E. Gubankova
Based on the Son-Yamamoto relation obtained for the transverse part of the triangle axial anomaly in QCD_{4}, we derive its analog in a two-dimensional system. It connects the transverse part of the mixed vector-axial current two-point function with the diagonal vector and axial current two-point fu…
[Phys. Rev. D 94, 085023] Published Mon Oct 24, 2016
Difference between the vacuum Casimir energies for grounded and isolated conductors
2016-10-24T10:00:00-04:00
Author(s): C. D. Fosco, F. C. Lombardo, and F. D. Mazzitelli
We study the vacuum (i.e., zero-temperature) Casimir energy for a system of neutral conductors which are isolated, as opposed to grounded. The former is meant to describe a situation where the total charge on each conductor, as well as all of its fluctuations, vanishes, while the latter describes a …
[Phys. Rev. D 94, 085024] Published Mon Oct 24, 2016
Transport in a gravity dual with a varying gravitational coupling constant
2016-10-24T10:00:00-04:00
Author(s): Antonio M. García-García, Bruno Loureiro, and Aurelio Romero-Bermúdez
We study asymptotically AdS Brans-Dicke (BD) backgrounds, where the Ricci tensor R is coupled to a scalar in the radial dimension, as effective models of metals with a varying coupling constant. We show that, for translationally invariant backgrounds, the regular part of the dc conductivity σ_{Q} de…
[Phys. Rev. D 94, 086007] Published Mon Oct 24, 2016
SU(2) low energy quark effective couplings in weak external magnetic field
2016-10-21T10:00:00-04:00
Author(s): Fábio L. Braghin
In this work corrections to the usual flavor SU(2) Nambu-Jona-Lasinio (NJL) coupling due to a weak external magnetic field are calculated by considering quark polarization in a (dressed) gluon exchange mechanism for quark interactions. The quark field is split into two components: one that condenses…
[Phys. Rev. D 94, 074030] Published Fri Oct 21, 2016
Forward J/ψ production at high energy: Centrality dependence and mean transverse momentum
2016-10-21T10:00:00-04:00
Author(s): B. Ducloué, T. Lappi, and H. Mäntysaari
Forward rapidity J/ψ meson production in proton-nucleus collisions can be an important constraint of descriptions of the small-x nuclear wave function. In an earlier work we studied this process using a dipole cross section satisfying the Balitsky-Kovchegov equation, fit to HERA inclusive data and c…
[Phys. Rev. D 94, 074031] Published Fri Oct 21, 2016
Particle production in high-energy collisions beyond the shockwave limit
2016-10-21T10:00:00-04:00
Author(s): Tolga Altinoluk and Adrian Dumitru
We compute next-to-eikonal and next-to-next-to-eikonal (NNE) corrections to the Lipatov vertex due to a finite target thickness. These arise from electric field insertions into the eikonal Wilson lines. We then derive a k_{T}-factorization formula for single-inclusive gluon production at NNE accurac…
[Phys. Rev. D 94, 074032] Published Fri Oct 21, 2016
Impact of J/ψ pair production at the LHC and predictions in nonrelativistic QCD
2016-10-21T10:00:00-04:00
Author(s): Li-Ping Sun, Hao Han, and Kuang-Ta Chao
For J/ψ pair production at hadron colliders, we present the full next-to-leading order (NLO) calculations with the color-singlet channel in nonrelativistic QCD. We find that the NLO result can reasonably well describe the LHCb measured cross section, but exhibits very different behaviors from the CM…
[Phys. Rev. D 94, 074033] Published Fri Oct 21, 2016
Inverse magnetic catalysis in bottom-up holographic QCD
2016-10-21T10:00:00-04:00
Author(s): Nick Evans, Carlisson Miller, and Marc Scott
We explore the effect of magnetic field on chiral condensation in QCD via a simple bottom-up holographic model which inputs QCD dynamics through the running of the anomalous dimension of the quark bilinear. Bottom-up holography is a form of effective field theory and we use it to explore the depende…
[Phys. Rev. D 94, 074034] Published Fri Oct 21, 2016
Study of MSSM heavy Higgs bosons decaying into charginos and neutralinos
2016-10-21T10:00:00-04:00
Author(s): Rahool Kumar Barman, Biplob Bhattacherjee, Amit Chakraborty, and Arghya Choudhury
A multitude of searches have already been performed by the ATLAS and CMS collaborations at the LHC to probe the heavy Higgses of the minimal supersymmetric Standard Model (MSSM) through their decay to the Standard Model particles. In this paper, we study the decay of the MSSM heavy Higgses into neut…
[Phys. Rev. D 94, 075013] Published Fri Oct 21, 2016
Renormalizable SU(5) unification
2016-10-21T10:00:00-04:00
Author(s): Pavel Fileviez Pérez and Clara Murgui
We propose a simple renormalizable grand unified theory based on the SU(5) gauge symmetry where the neutrino masses are generated at the quantum level through the Zee mechanism. In this model the same Higgs needed to correct the mass relation between charged leptons and down-type quarks plays a cruc…
[Phys. Rev. D 94, 075014] Published Fri Oct 21, 2016
Magnetic shielding and exotic spin-dependent interactions
2016-10-21T10:00:00-04:00
Author(s): D. F. Jackson Kimball, J. Dudley, Y. Li, S. Thulasi, S. Pustelny, D. Budker, and M. Zolotorev
Experiments searching for exotic spin-dependent interactions typically employ magnetic shielding between the source of the exotic field and the interrogated spins. We explore the question of what effect magnetic shielding has on detectable signals induced by exotic fields. Our general conclusion is …
[Phys. Rev. D 94, 082005] Published Fri Oct 21, 2016
Gravitational-wave signatures of exotic compact objects and of quantum corrections at the horizon scale
2016-10-21T10:00:00-04:00
Author(s): Vitor Cardoso, Seth Hopper, Caio F. B. Macedo, Carlos Palenzuela, and Paolo Pani
Gravitational waves from binary coalescences provide one of the cleanest signatures of the nature of compact objects. It has been recently argued that the postmerger ringdown waveform of exotic ultracompact objects is initially identical to that of a black hole, and that putative corrections at the …
[Phys. Rev. D 94, 084031] Published Fri Oct 21, 2016
Unstable normal modes of low T/W dynamical instabilities in differentially rotating stars
2016-10-21T10:00:00-04:00
Author(s): Motoyuki Saijo and Shin’ichirou Yoshida
We investigate the nature of low T/W dynamical instabilities in differentially rotating stars by means of linear perturbation. Here, T and W represent rotational kinetic energy and the gravitational binding energy of the star. This is the first attempt to investigate low T/W dynamical instabilities …
[Phys. Rev. D 94, 084032] Published Fri Oct 21, 2016
Constraints on extra dimensions from atomic spectroscopy
2016-10-21T10:00:00-04:00
Author(s): F. Dahia and A. S. Lemos
We consider a hydrogen atom confined in a thick brane embedded in a higher-dimensional space. Due to effects of the extra dimensions, the gravitational potential is amplified in distances smaller than the size of the supplementary space, in comparison with the Newtonian potential. Studying the influ…
[Phys. Rev. D 94, 084033] Published Fri Oct 21, 2016
Planck star tunneling time: An astrophysically relevant observable from background-free quantum gravity
2016-10-21T10:00:00-04:00
Author(s): Marios Christodoulou, Carlo Rovelli, Simone Speziale, and Ilya Vilensky
A gravitationally collapsed object can bounce out from its horizon via a tunnelling process that violates the classical equations in a finite region. Since tunnelling is a nonperturbative phenomenon, it cannot be described in terms of quantum fluctuations around a classical solution, and a backgroun…
[Phys. Rev. D 94, 084035] Published Fri Oct 21, 2016
Hamiltonian simulation of the Schwinger model at finite temperature
2016-10-21T10:00:00-04:00
Author(s): Boye Buyens, Frank Verstraete, and Karel Van Acoleyen
Using matrix product operators, the Schwinger model is simulated in thermal equilibrium. The variational manifold of gauge-invariant matrix product operators is constructed to represent Gibbs states. As a first application, the chiral condensate in thermal equilibrium is computed, and agreement with…
[Phys. Rev. D 94, 085018] Published Fri Oct 21, 2016
Electromagnetic description of three-dimensional time-reversal invariant ponderable topological insulators
2016-10-21T10:00:00-04:00
Author(s): A. Martín-Ruiz, M. Cambiaso, and L. F. Urrutia
A general technique to analyze the classical interaction between ideal topological insulators, and electromagnetic sources and fields, has been previously elaborated. Nevertheless it is not immediately applicable in the laboratory as it fails to describe real ponderable media. In this work we provid…
[Phys. Rev. D 94, 085019] Published Fri Oct 21, 2016
Geometry in transition in four dimensions: A model of emergent geometry in the early universe
2016-10-21T10:00:00-04:00
Author(s): Badis Ydri, Ramda Khaled, and Rouag Ahlam
We study a six matrix model with global SO(3)×SO(3) symmetry containing at most quartic powers of the matrices. This theory exhibits a phase transition from a geometrical phase at low temperature to a Yang-Mills matrix phase with no background geometrical structure at high temperature. This is an ex…
[Phys. Rev. D 94, 085020] Published Fri Oct 21, 2016
Exact Casimir interaction of perfectly conducting three-spheres in four euclidean dimensions
2016-10-21T10:00:00-04:00
Author(s): Giuseppe Bimonte
Exploiting conformal symmetry, we derive a simple exact formula for the classical electromagnetic Casimir interaction of two perfectly conducting three-spheres, including the sphere-plate geometry as a special case, in four Euclidean dimensions. We verify that the short distance expansion of the Cas…
[Phys. Rev. D 94, 085021] Published Fri Oct 21, 2016
Revised variational approach to QCD in Coulomb gauge
2016-10-20T10:00:00-04:00
Author(s): Davide R. Campagnari, Ehsan Ebadati, Hugo Reinhardt, and Peter Vastag
The variational approach to QCD in Coulomb gauge is revisited. By assuming the non-Abelian Coulomb potential to be given by the sum of its infrared and ultraviolet parts, i.e. by a linearly rising potential and an ordinary Coulomb potential, and by using a Slater determinant ansatz for the quark wav…
[Phys. Rev. D 94, 074027] Published Thu Oct 20, 2016
Quark-gluon double parton distributions in the light-front dressed quark model
2016-10-20T10:00:00-04:00
Author(s): Tomas Kasemets and Asmita Mukherjee
We study parton distributions for two partons, a quark and a gluon, in the light-front dressed quark model, with a focus on the correlations between the two partons. The model calculation leads to sizable spin-spin and spin-kinematic correlations of interest for studies of double parton scattering i…
[Phys. Rev. D 94, 074029] Published Thu Oct 20, 2016
Minimal models of loop-induced lepton flavor violation in Higgs boson decays
2016-10-20T10:00:00-04:00
Author(s): Carlos Alvarado, Rodolfo M. Capdevilla, Antonio Delgado, and Adam Martin
The LHC has recently reported a slight excess in the h→τμ channel. If this lepton flavor violating (LFV) decay is confirmed, an extension of the standard model (SM) will be required to explain it. In this paper we investigate two different possibilities to accommodate such a LFV process: the first s…
[Phys. Rev. D 94, 075010] Published Thu Oct 20, 2016
Exploring peaks and valleys in the diphoton spectrum
2016-10-20T10:00:00-04:00
Author(s): Nathaniel Craig, Sophie Renner, and Dave Sutherland
We investigate the effects of resonance-continuum interference on the diphoton spectrum in the presence of a new spin-0 or spin-2 state produced via gluons or quarks and decaying to pairs of photons. Interference effects can significantly influence the extraction of resonance masses and widths from …
[Phys. Rev. D 94, 075011] Published Thu Oct 20, 2016
Collapse of a self-gravitating Bose-Einstein condensate with attractive self-interaction
2016-10-20T10:00:00-04:00
Author(s): Pierre-Henri Chavanis
We study the collapse of a self-gravitating Bose-Einstein condensate with attractive self-interaction. Equilibrium states in which the gravitational attraction and the attraction due to the self-interaction are counterbalanced by the quantum pressure (Heisenberg’s uncertainty principle) exist only b…
[Phys. Rev. D 94, 083007] Published Thu Oct 20, 2016
Lagrangian theory for cosmic structure formation with vorticity: Newtonian and post-Friedmann approximations
2016-10-20T10:00:00-04:00
Author(s): Cornelius Rampf, Eleonora Villa, Daniele Bertacca, and Marco Bruni
We study the nonlinear gravitational dynamics of a universe filled with a pressureless fluid and a cosmological constant Λ in the context of Newtonian gravity, and in the relativistic post-Friedmann approach proposed in paper I [I. Milillo et al., Phys. Rev. D 92, 023519 (2015)]. The post-Friedmann…
[Phys. Rev. D 94, 083515] Published Thu Oct 20, 2016
Impacts of dark energy on weighing neutrinos: Mass hierarchies considered
2016-10-20T10:00:00-04:00
Author(s): Sai Wang, Yi-Fan Wang, Dong-Mei Xia, and Xin Zhang
Taking into account the mass splittings between three active neutrinos, we investigate the impacts of dark energy on constraining the total neutrino mass ∑m_{ν} by using recent cosmological observations. We consider two typical dark energy models, namely, the wCDM model and the holographic dark ener…
[Phys. Rev. D 94, 083519] Published Thu Oct 20, 2016
Fast generation of weak lensing maps by the inverse-Gaussianization method
2016-10-20T10:00:00-04:00
Author(s): Yu Yu, Pengjie Zhang, and Yipeng Jing
To take full advantage of the unprecedented power of upcoming weak lensing surveys, understanding the noise, such as cosmic variance and geometry/mask effects, is as important as understanding the signal itself. Accurately quantifying the noise requires a large number of statistically independent mo…
[Phys. Rev. D 94, 083520] Published Thu Oct 20, 2016
Phonon spectrum and correlations in a transonic flow of an atomic Bose gas
2016-10-20T10:00:00-04:00
Author(s): Florent Michel, Jean-François Coupechoux, and Renaud Parentani
This paper provides a theoretical underpinning to the recent experimental observation of the analog Hawking effect in a BEC system, while also raising some relevant issues that need to be addressed to make the observation entirely reliable. Additionally, the paper unveils a new effect through the density two point function, which will certainly trigger new work in the active field of analog gravity.
(image)
[Phys. Rev. D 94, 084027] Published Thu Oct 20, 2016
Method to detect gravitational waves from an ensemble of known pulsars
2016-10-20T10:00:00-04:00
Author(s): Xilong Fan, Yanbei Chen, and Christopher Messenger
Combining information from weak sources, such as known pulsars, for gravitational wave detection, is an attractive approach to improve detection efficiency. We propose an optimal statistic for a general ensemble of signals and apply it to an ensemble of known pulsars. Our method combines F-statistic…
[Phys. Rev. D 94, 084029] Published Thu Oct 20, 2016
Graviton creation by small scale factor oscillations in an expanding universe
2016-10-20T10:00:00-04:00
Author(s): Enrico D. Schiappacasse and L. H. Ford
We treat quantum creation of gravitons by small scale factor oscillations around the average of an expanding universe. Such oscillations can arise in standard general relativity due to oscillations of a homogeneous, minimally coupled scalar field. They can also arise in modified gravity theories wit…
[Phys. Rev. D 94, 084030] Published Thu Oct 20, 2016
Prefactor in the dynamically assisted Sauter-Schwinger effect
2016-10-20T10:00:00-04:00
Author(s): Christian Schneider and Ralf Schützhold
The probability of creating an electron-positron pair out of the quantum vacuum by a strong electric field can be enhanced tremendously via an additional weaker time-dependent field. This dynamically assisted Sauter-Schwinger effect has already been studied in several works. It has been found that t…
[Phys. Rev. D 94, 085015] Published Thu Oct 20, 2016
θ dependence of 4D SU(N) gauge theories in the large-N limit
2016-10-20T10:00:00-04:00
Author(s): Claudio Bonati, Massimo D’Elia, Paolo Rossi, and Ettore Vicari
We study the large-N scaling behavior of the θ dependence of the ground-state energy density E(θ) of four-dimensional (4D) SU(N) gauge theories and two-dimensional (2D) CP^{N−1} models, where θ is the parameter associated with the Lagrangian topological term. We consider its θ expansion around θ=0, …
[Phys. Rev. D 94, 085017] Published Thu Oct 20, 2016
Refractive index of quark-gluon plasma: Kinetic theory with a Bhatnagar-Gross-Krook collisional kernel
2016-10-19T10:00:00-04:00
Author(s): Bing-feng Jiang, De-fu Hou, and Jia-rong Li
We derive the electric permittivity ε and magnetic permeability μ_{M} of the quark-gluon plasma (QGP) with the kinetic theory associated with a Bhatnagar-Gross-Krook (BGK) collisional kernel. Based on them, we study the effect of collisions on the refractive index of QGP. Compared to the collisionle…
[Phys. Rev. D 94, 074026] Published Wed Oct 19, 2016
Monotop signature from the supersymmetric tt [over ¯] H channel
2016-10-19T10:00:00-04:00
Author(s): Dorival Gonçalves, Kazuki Sakurai, and Michihisa Takeuchi
We point out that a distinctive monotop signature is present in natural supersymmetry scenarios when a scalar top quark and Higgsinos are almost mass degenerate. This signature originates from a supersymmetric counterpart of the tt[over ¯]H process, i.e. pp→t[over ˜]th[over ˜]. Unlike monojet signat…
[Phys. Rev. D 94, 075009] Published Wed Oct 19, 2016
Observational constraints on new exact inflationary scalar-field solutions
2016-10-19T10:00:00-04:00
Author(s): John D. Barrow and Andronikos Paliathanasis
An algorithm is used to generate new solutions of the scalar-field equations in homogeneous and isotropic universes. Solutions can be found for pure scalar fields with various potentials in the absence and presence of spatial curvature and other perfect fluids. A series of generalizations of the Cha…
[Phys. Rev. D 94, 083518] Published Wed Oct 19, 2016
Superluminal graviton propagation
2016-10-19T10:00:00-04:00
Author(s): Karim Benakli, Shira Chapman, Luc Darmé, and Yaron Oz
We use the method of characteristics to study superluminal graviton (which we call the swift graviton) propagation in theories of higher-curvature gravity of the form (Riemann)^{2}, (Riemann)^{3}, ∇^{2}(Riemann)^{2} and (Riemann)^{4}. We consider a pp-wave background. When probed by gravitons with a…
[Phys. Rev. D 94, 084026] Published Wed Oct 19, 2016
Coherent 3j-symbol representation for the loop quantum gravity intertwiner space
2016-10-19T10:00:00-04:00
Author(s): E. Alesci, J. Lewandowski, and I. Mäkinen
We introduce a new technique for dealing with the matrix elements of the Hamiltonian operator in loop quantum gravity, based on the use of intertwiners projected on coherent states of angular momentum. We give explicit expressions for the projections of intertwiners on the spin coherent states in te…
[Phys. Rev. D 94, 084028] Published Wed Oct 19, 2016
Probing axions with the neutrino signal from the next Galactic supernova
2016-10-19T10:00:00-04:00
Author(s): Tobias Fischer, Sovan Chakraborty, Maurizio Giannotti, Alessandro Mirizzi, Alexandre Payez, and Andreas Ringwald
We study the impact of axion emission in simulations of massive star explosions, as an additional source of energy loss complementary to the standard neutrino emission. The inclusion of this channel shortens the cooling time of the nascent protoneutron star and hence the duration of the neutrino sig…
[Phys. Rev. D 94, 085012] Published Wed Oct 19, 2016
Partition function on spheres: How to use zeta function regularization
2016-10-19T10:00:00-04:00
Author(s): Alexander Monin
It is known that not all summation methods are linear and stable. Zeta function regularization is in general nonlinear. However, in some cases formal manipulations with zeta function regularization (assuming linearity of sums) lead to correct results. We consider several examples and show why this h…
[Phys. Rev. D 94, 085013] Published Wed Oct 19, 2016
Hot dense magnetized ultrarelativistic spinor matter in a slab
2016-10-19T10:00:00-04:00
Author(s): Yurii A. Sitenko
Properties of hot dense ultrarelativistic spinor matter in a slab of finite width, placed in a transverse uniform magnetic field, are studied. The admissible set of boundary conditions is determined by the requirement that spinor matter be confined inside the slab. In thermal equilibrium, the chiral…
[Phys. Rev. D 94, 085014] Published Wed Oct 19, 2016
WW scattering in a radiative electroweak symmetry breaking scenario
2016-10-18T10:00:00-04:00
Author(s): Kazuhiro Endo, Koji Ishiwata, and Yukinari Sumino
A classically scale invariant (CSI) extension of the standard model (SM) induces radiative electroweak symmetry breaking and predicts anomalously large Higgs self-interactions. Hence, W_{L}W_{L} scattering processes can be a good probe of the symmetry breaking mechanism. We develop a theoretical fra…
[Phys. Rev. D 94, 075007] Published Tue Oct 18, 2016
Probing the electroweak phase transition with Higgs factories and gravitational waves
2016-10-18T10:00:00-04:00
Author(s): Peisi Huang, Andrew J. Long, and Lian-Tao Wang
After the discovery of the Higgs boson, understanding the nature of electroweak symmetry breaking and the associated electroweak phase transition has become the most pressing question in particle physics. Answering this question is a priority for experimental studies. Data from the LHC and future le…
[Phys. Rev. D 94, 075008] Published Tue Oct 18, 2016
Integrated approach to cosmology: Combining CMB, large-scale structure, and weak lensing
2016-10-18T10:00:00-04:00
Author(s): Andrina Nicola, Alexandre Refregier, and Adam Amara
Recent observational progress has led to the establishment of the standard ΛCDM model for cosmology. This development is based on different cosmological probes that are usually combined through their likelihoods at the latest stage in the analysis. We implement here an integrated scheme for cosmolog…
[Phys. Rev. D 94, 083517] Published Tue Oct 18, 2016
New method for shadow calculations: Application to parametrized axisymmetric black holes
2016-10-18T10:00:00-04:00
Author(s): Ziri Younsi, Alexander Zhidenko, Luciano Rezzolla, Roman Konoplya, and Yosuke Mizuno
Collaborative international efforts under the name of the Event Horizon Telescope project, using sub-mm very long baseline interferometry, are soon expected to provide the first images of the shadow cast by the candidate supermassive black hole in our Galactic center, Sagittarius A*. Observations of…
[Phys. Rev. D 94, 084025] Published Tue Oct 18, 2016
Lepton flavor violating quarkonium decays
2016-10-17T10:00:00-04:00
Author(s): Derek E. Hazard and Alexey A. Petrov
We argue that lepton flavor violating (LFV) decays M→ℓ_{1}ℓ[over ¯]_{2} of quarkonium states M with different quantum numbers could be used to put constraints on the Wilson coefficients of effective operators describing LFV interactions at low energy scales. We note that restricted kinematics of the…
[Phys. Rev. D 94, 074023] Published Mon Oct 17, 2016
MS [over ¯] -on-shell quark mass relation up to four loops in QCD and a general SU(N) gauge group
2016-10-17T10:00:00-04:00
Author(s): Peter Marquard, Alexander V. Smirnov, Vladimir A. Smirnov, Matthias Steinhauser, and David Wellmann
We compute the relation between heavy quark masses defined in the modified minimal subtraction and the on-shell schemes. Detailed results are presented for all coefficients of the SU(N_{c}) color factors. The reduction of the four-loop on-shell integrals is performed for a general QCD gauge paramete…
[Phys. Rev. D 94, 074025] Published Mon Oct 17, 2016
Observation of J/ψ→γηπ^{0}
2016-10-14T10:00:00-04:00
Author(s): M. Ablikim
et al. (BESIII Collaboration)
We present the first study of the process J/ψ→γηπ^{0} using (223.7±1.4)×10^{6} J/ψ events accumulated with the BESIII detector at the BEPCII facility. The branching fraction for J/ψ→γηπ^{0} is measured to be B(J/ψ→γηπ^{0})=(2.14±0.18(stat)±0.25(syst))×10^{−5}. With a Bayesian approach, the upper lim…
[Phys. Rev. D 94, 072005] Published Fri Oct 14, 2016
Analysis of the charmed mesons D_{1}^{*} (2680), D_{3}^{*} (2760), and D_{2}^{*} (3000)
2016-10-14T10:00:00-04:00
Author(s): Guo-Liang Yu, Zhi-Gang Wang, and ZhenYu Li
In this work, we systematically study the strong decay behavior of the charmed mesons D_{1}^{*}(2680), D_{3}^{*}(2760), and D_{2}^{*}(3000) reported by the LHCb Collaboration. By comparing the masses and the decay properties with the results of the experiment, we assign these newly observed mesons a…
[Phys. Rev. D 94, 074024] Published Fri Oct 14, 2016
Reheating the Standard Model from a hidden sector
2016-10-14T10:00:00-04:00
Author(s): Tommi Tenkanen and Ville Vaskonen
We consider a scenario where the inflaton decays to a hidden sector thermally decoupled from the visible Standard Model sector. A tiny portal coupling between the hidden and the visible sectors later heats the visible sector so that the Standard Model degrees of freedom come to dominate the energy d…
[Phys. Rev. D 94, 083516] Published Fri Oct 14, 2016
Quantized Brans-Dicke theory: Phase transition, strong coupling limit, and general relativity
2016-10-14T10:00:00-04:00
Author(s): Sridip Pal
We show that Friedmann-Robertson-Walker geometry with a flat spatial section in quantized (Wheeler deWitt quantization) Brans-Dicke (BD) theory reveals a rich phase structure owing to anomalous breaking of a classical symmetry, which maps the scale factor a↦λa for some constant λ. In the weak coupli…
[Phys. Rev. D 94, 084023] Published Fri Oct 14, 2016
Conductivities in an anisotropic medium
2016-10-14T10:00:00-04:00
Author(s): Sunly Khimphun, Bum-Hoon Lee, and Chanyong Park
In order to imitate the anisotropic medium of a condensed matter system, we take into account an Einstein-Maxwell-dilaton-axion model as a dual gravity theory where the anisotropy is caused by different momentum relaxations. This gravity model allows an anisotropic charged black hole solution. On th…
[Phys. Rev. D 94, 086005] Published Fri Oct 14, 2016
Holographic model for the baryon octet
2016-10-13T10:00:00-04:00
Author(s): Zhen Fang
By adopting the nonlinear realization of chiral symmetry, a holographic model for the baryon octet is proposed. The mass spectra of the baryon octet and their low-lying excited states, which show good consistency with experiments, are calculated. The couplings of pion to nucleons are derived in two …
[Phys. Rev. D 94, 074017] Published Thu Oct 13, 2016