Physical Review D

Physical Review D

Recent articles in Physical Review D
Holographic superconductors with Hořava-Lifshitz black holes Author(s): Rong-Gen Cai and Hai-Qing Zhang We discuss the phase transition of planar black holes in Hořava-Lifshitz gravity by introducing a Maxwell field and a complex scalar field. We calculate the condensate of the charged operators in the dual conformal field theories when the mass square of the complex scalar field is m^{2} =-2/L^{2} a... [Phys. Rev. D 81, 066003] Published Fri Mar 12, 2010 Vacuum electromagnetic counterparts of binary black-hole mergers Author(s): Philipp Mösta, Carlos Palenzuela, Luciano Rezzolla, Luis Lehner, Shin’ichirou Yoshida, and Denis Pollney As one step towards a systematic modeling of the electromagnetic (EM) emission from an inspiralling black hole binary we consider a simple scenario in which the binary moves in a uniform magnetic field anchored to a distant circumbinary disc. We study this system by solving the Einstein-Maxwell equa... [Phys. Rev. D 81, 064017] Published Fri Mar 12, 2010 Complete set of solutions of the geodesic equation in the space-time of a Schwarzschild black hole pierced by a cosmic string Author(s): Eva Hackmann, Betti Hartmann, Claus Lämmerzahl, and Parinya Sirimachan We study the geodesic equation in the space-time of a Schwarzschild black hole pierced by an infinitely thin cosmic string and give the complete set of analytical solutions of this equation for massive and massless particles, respectively. The solutions of the geodesic equations can be classified ac... [Phys. Rev. D 81, 064016] Published Fri Mar 12, 2010 The Linet-Tian solution with a positive cosmological constant in four and higher dimensions Author(s): J. B. Griffiths and J. Podolský The static, apparently cylindrically symmetric vacuum solution of Linet and Tian for the case of a positive cosmological constant Λ is shown to have toroidal symmetry and, besides Λ, to include three arbitrary parameters. It possesses two curvature singularities, of which one can be removed by mat... [Phys. Rev. D 81, 064015] Published Fri Mar 12, 2010 Impact of mergers on LISA parameter estimation for nonspinning black hole binaries Author(s): Sean T. McWilliams, James Ira Thorpe, John G. Baker, and Bernard J. Kelly We investigate the precision with which the parameters describing the characteristics and location of nonspinning black hole binaries can be measured with the Laser Interferometer Space Antenna (LISA). By using complete waveforms including the inspiral, merger, and ringdown portions of the signals, ... [Phys. Rev. D 81, 064014] Published Fri Mar 12, 2010 Effect of kinematic constraints on multitension string network evolution Author(s): Anastasios Avgoustidis and Edmund J. Copeland We consider the evolution of a network of strings in an expanding Universe, allowing for the formation of junctions between strings of different tensions. By explicitly including, in the velocity-dependent evolution equations for the network, kinematic constraints associated with the formation of Y-... [Phys. Rev. D 81, 063517] Published Fri Mar 12, 2010 Radio and gamma-ray constraints on dark matter annihilation in the Galactic center Author(s): R. M. Crocker, N. F. Bell, C. Balázs, and D. I. Jones We determine upper limits on the dark matter (DM) self-annihilation cross section for scenarios in which annihilation leads to the production of electron—positron pairs. In the Galactic center, relativistic electrons and positrons produce a radio flux via synchroton emission, and a gamma-ray flux ... [Phys. Rev. D 81, 063516] Published Fri Mar 12, 2010 Bayesian analysis of the backreaction models Author(s): Aleksandra Kurek, Krzysztof Bolejko, and Marek Szydłowski We present a Bayesian analysis of four different types of backreaction models, which are based on the Buchert equations. In this approach, one considers a solution to the Einstein equations for a general matter distribution and then an average of various observable quantities is taken. Such an appro... [Phys. Rev. D 81, 063515] Published Fri Mar 12, 2010 Testing properties of the Galactic center black hole using stellar orbits Author(s): David Merritt, Tal Alexander, Seppo Mikkola, and Clifford M. Will The spin and quadrupole moment of the supermassive black hole at the Galactic center can in principle be measured via astrometric monitoring of stars orbiting at milliparsec distances, allowing tests of general relativistic “no-hair”theorems . One complicating factor is the presence of perturbat... [Phys. Rev. D 81, 062002] Published Fri Mar 12, 2010 Casimir force at a knife’s edge Author(s): Noah Graham, Alexander Shpunt, Thorsten Emig, Sahand Jamal Rahi, Robert L. Jaffe, and Mehran Kardar The Casimir force has been computed exactly for only a few simple geometries, such as infinite plates, cylinders, and spheres. We show that a parabolic cylinder, for which analytic solutions to the Helmholtz equation are available, is another case where such a calculation is possible. We compute the... [Phys. Rev. D 81, 061701] Published Fri Mar 12, 2010 Light vector meson octet-decuplet baryon vertices in QCD Author(s): T. M. Aliev, A. Özpineci, M. Savcı, and V. S. Zamiralov The strong coupling constants between light vector mesons and octet-decuplet baryons are calculated in framework of the light cone QCD sum rules, taking into account SU(3) flavor symmetry breaking effects. It is shown that all strong coupling constants can be represented in terms of a single univers... [Phys. Rev. D 81, 056004] Published Fri Mar 12, 2010 Supersymmetric model with Dirac neutrino masses Author(s): Gardner Marshall, Mathew McCaskey, and Marc Sher New models have recently been proposed in which a second Higgs doublet couples only to the lepton doublets and right-handed neutrinos, yielding Dirac neutrino masses. The vacuum value of this second “nu-Higgs” doublet is made very small by means of a very softly-broken Z_{2} or U(1) symmetry. Th... [Phys. Rev. D 81, 053006] Published Fri Mar 12, 2010 Calculable inverse-seesaw neutrino masses in supersymmetry Author(s): F. Bazzocchi, D. G. Cerdeño, C. Muñoz, and J. W. F. Valle We provide a scenario where naturally small and calculable neutrino masses arise from a supersymmetry-breaking renormalization-group-induced vacuum expectation value. The construction consists of an extended version of the next-to-minimal supersymmetric standard model and the mechanism is illustrate... [Phys. Rev. D 81, 051701] Published Fri Mar 12, 2010 Conformal anisotropic mechanics and the Hořava dispersion relation Author(s): Juan M. Romero, Vladimir Cuesta, J. Antonio Garcia, and J. David Vergara In this paper we implement scale anisotropic transformations between space and time in classical mechanics. The resulting system is consistent with the dispersion relation of Hořava gravity [P. Hořava, Phys. Rev. D 79, 084008 (2009)]. Also, we show that our model is a generalization of the conform... [Phys. Rev. D 81, 065013] Published Thu Mar 11, 2010 Bekenstein-Hawking area law for black objects with conical singularities Author(s): Carlos Herdeiro, Burkhard Kleihaus, Jutta Kunz, and Eugen Radu We argue that, when working with the appropriate set of thermodynamical variables, the Bekenstein-Hawking law still holds for asymptotically flat black objects with conical singularities. The mass energy which enters the first law of thermodynamics does not, however, coincide with the Arnowitt-Deser... [Phys. Rev. D 81, 064013] Published Thu Mar 11, 2010 Supernova, baryon acoustic oscillations, and CMB surface distance constraints on f(G) higher order gravity models Author(s): Jacob Moldenhauer, Mustapha Ishak, John Thompson, and Damien A. Easson We consider recently proposed higher-order gravity models where the action is built from the Einstein-Hilbert action plus a function f(G) of the Gauss-Bonnet invariant. The models were previously shown to pass physical acceptability conditions as well as solar system tests. In this paper, we compare... [Phys. Rev. D 81, 063514] Published Thu Mar 11, 2010 Evolution of linear cosmological perturbations and its observational implications in Galileon-type modified gravity Author(s): Tsutomu Kobayashi, Hiroyuki Tashiro, and Daichi Suzuki A scalar-tensor theory of gravity can be made not only to account for the current cosmic acceleration, but also to satisfy solar-system and laboratory constraints, by introducing a nonlinear derivative interaction for the scalar field. Such an additional scalar degree of freedom is called “Galileo... [Phys. Rev. D 81, 063513] Published Thu Mar 11, 2010 Primordial B-mode diagnostics and self-calibrating the CMB polarization Author(s): Amit P. S. Yadav, Meng Su, and Matias Zaldarriaga Distortions in the primordial cosmic microwave background (CMB) along the line of sight can be modeled and described using 11 fields. These distortion fields correspond to various cosmological signals such as weak gravitational lensing of the CMB by a large-scale structure, screening from patchy rei... [Phys. Rev. D 81, 063512] Published Thu Mar 11, 2010 Large non-Gaussianities with intermediate shapes from quasi-single-field inflation Author(s): Xingang Chen and Yi Wang We study the slow-roll inflation models, where the inflaton slow-rolls along a trajectory whose orthogonal directions are lifted by potentials with masses of order the Hubble parameter. In these models large non-Gaussianities can be generated through the transformation from the isocurvature modes to... [Phys. Rev. D 81, 063511] Published Thu Mar 11, 2010 Interplay between collective effects and nonstandard interactions of supernova neutrinos Author(s): A. Esteban-Pretel, R. Tomàs, and J. W. F. Valle We consider the effect of nonstandard neutrino interactions (NSI, for short) on the propagation of neutrinos through the supernova (SN) envelope within a three-neutrino framework and taking into account the presence of a neutrino background. We find that for given NSI parameters, with strength gener... [Phys. Rev. D 81, 063003] Published Thu Mar 11, 2010 Particle swarm optimization and gravitational wave data analysis: Performance on a binary inspiral testbed Author(s): Yan Wang and Soumya D. Mohanty The detection and estimation of gravitational wave signals belonging to a parameterized family of waveforms requires, in general, the numerical maximization of a data-dependent function of the signal parameters. Because of noise in the data, the function to be maximized is often highly multimodal wi... [Phys. Rev. D 81, 063002] Published Thu Mar 11, 2010 Projected constraints on modified gravity cosmologies from 21 cm intensity mapping Author(s): Kiyoshi Wesley Masui, Fabian Schmidt, Ue-Li Pen, and Patrick McDonald We present projected constraints on modified gravity models from the observational technique known as 21 cm intensity mapping, where cosmic structure is detected without resolving individual galaxies. The resulting map is sensitive to both baryon acoustic oscillations and weak lensing, two of the m... [Phys. Rev. D 81, 062001] Published Thu Mar 11, 2010 Comparing the predictions of two mixed neutralino dark matter models with the recent CDMS II candidate events Author(s): D. P. Roy We consider two optimally mixed neutralino dark matter models, based on nonuniversal gaugino masses, which were recently proposed by us to achieve WMAP compatible relic density over a large part of the minimal supersymmetric standard model parameter space. We compare the resulting predictions for th... [Phys. Rev. D 81, 057701] Published Thu Mar 11, 2010 Simple-minded unitarity constraint and an application to unparticles Author(s): Antonio Delgado and Matthew J. Strassler Unitarity, a powerful constraint on new physics, has not always been properly accounted for in the context of hidden sectors. Feng, Rajaraman, and Tu have suggested that large (pb to nb) multiphoton or multilepton signals could be generated at the LHC through the three-point functions of a conformal... [Phys. Rev. D 81, 056003] Published Thu Mar 11, 2010 Advance and prospects in constraining the Yukawa-type corrections to Newtonian gravity from the Casimir effect Author(s): V. B. Bezerra, G. L. Klimchitskaya, V. M. Mostepanenko, and C. Romero We report stronger constraints on the parameters of Yukawa-type corrections to Newtonian gravity from measurements of the lateral Casimir force between sinusoidally corrugated surfaces of a sphere and a plate. In the interaction range from 1.6 to 14 nm the strengthening of previously known high con... [Phys. Rev. D 81, 055003] Published Thu Mar 11, 2010 SU(2) lattice gluon propagator: Continuum limit, finite-volume effects, and infrared mass scale m_{IR} Author(s): V. G. Bornyakov, V. K. Mitrjushkin, and M. Müller–Preussker We study the scaling behavior and finite (physical) volume effects as well as the Gribov copy dependence of the SU(2) Landau gauge gluon propagator on the lattice. Our physical lattice sizes range from (3.0 fm)^{4} to (7.3 fm)^{4} . Considering lattices with decreasing lattice spacing but ... [Phys. Rev. D 81, 054503] Published Thu Mar 11, 2010 Evolution of fluctuations near QCD critical point Author(s): M. A. Stephanov We propose to describe the time evolution of quasistationary fluctuations near QCD critical point by a system of stochastic Boltzmann-Langevin-Vlasov-type equations. We derive the equations and study the system analytically in the linearized regime. Known results for equilibrium stationary fluctuati... [Phys. Rev. D 81, 054012] Published Thu Mar 11, 2010 Relations between vacuum condensates and low energy parameters from a rational approach Author(s): Oscar Catà Conventional methods to determine nonperturbative parameters in QCD, such as the different variants of QCD sum rules or the minimal hadronic approximation, combine a certain degree of matching to QCD with inputs from hadronic parameters. The latter introduce systematic errors difficult to quantify. ... [Phys. Rev. D 81, 054011] Published Thu Mar 11, 2010 Spin-dependent antenna splitting functions Author(s): Andrew J. Larkoski and Michael E. Peskin We consider parton showers based on radiation from QCD dipoles or “antennas”. These showers are built from 2→3 parton splitting processes. The question then arises of what functions replace the Altarelli-Parisi splitting functions in this approach. We give a detailed answer to this question, a... [Phys. Rev. D 81, 054010] Published Thu Mar 11, 2010 Scalar-isoscalar states in the large-N_{c} Regge approach Author(s): Enrique Ruiz Arriola and Wojciech Broniowski Scalar-isoscalar states (J^{PC} =0^{++} ) are investigated within the large-N_{c} Regge approach. We elaborate on the consequences of including the lightest f_{0} (600) scalar-isoscalar state into such an analysis, where the position of f_{0} (600) fits very well into the pattern of the radial Regge... [Phys. Rev. D 81, 054009] Published Thu Mar 11, 2010

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