Gravitational Particle Production in Massive Chaotic Inflation and the Moduli Problem
Jaume de Haro and Emilio Elizalde
Particle production from vacuum fluctuations during inflation is briefly revisited. The moduli problem occurring with light particles produced at the end of inflation is addressed, namely, the fact that some results are in disagreement with nucleosynthesis constrains. A universal solution to this pr ... [Phys. Rev. Lett. 108, 061303 ] published .
Effect of radiative gravitational modes on the dynamics of a cylindrical shell of counterrotating particles
Reinaldo J. Gleiser and Marcos A. Ramirez
In this paper we consider some aspects of the relativistic dynamics of a cylindrical shell of counterrotating particles. In some sense these are the simplest systems with a physically acceptable matter content that display in a well-defined sense an interaction with the radiative modes of the gravit ... [Phys. Rev. D 85, 044026 ] published .
Horizon-absorbed energy flux in circularized, nonspinning black-hole binaries, and its effective-one-body representation
Alessandro Nagar and Sarp Akcay
We propose, within the effective-one-body approach, a new, resummed analytical representation of the gravitational-wave energy flux absorbed by a system of two circularized (nonspinning) black holes. This expression is such that it is well-behaved in the strong-field, fast-motion regime, notably up ... [Phys. Rev. D 85, 044025 ] published .
On black holes in massive gravity
L. Berezhiani, G. Chkareuli, C. de Rham, G. Gabadadze, and A. J. Tolley
In massive gravity, the black hole solutions found so far on Minkowski space happen to convert horizons into a certain type of singularities. Here, we explore whether these singularities can be avoided if space-time is not asymptotically Minkowskian. We find an exact analytic black hole (BH) solutio ... [Phys. Rev. D 85, 044024 ] published .
Gravitational waves in dynamical spacetimes with matter content in the fully constrained formulation
Isabel Cordero-Carrion, Pablo Cerda-Duran, and Jose Maria Ibanez
The fully constrained formulation (FCF) of general relativity is a framework introduced as an alternative to the hyperbolic formulations traditionally used in numerical relativity. The FCF equations form a hybrid elliptic-hyperbolic system of equations including explicitly the constraints. We presen ... [Phys. Rev. D 85, 044023 ] published .
Bianchi class B spacetimes with electromagnetic fields
Kei Yamamoto
We carry out a thorough analysis on a class of cosmological space-times which admit three spacelike Killing vectors of Bianchi class B and contain electromagnetic fields. Using dynamical system analysis, we show that a family of electro-vacuum plane-wave solutions of the Einstein-Maxwell equations i ... [Phys. Rev. D 85, 043510 ] published .
The coincidence limit of the graviton propagator in de Donder gauge on de Sitter background
E. O. Kahya, S. P. Miao, and R. P. Woodard
We explicitly work out the de Sitter breaking contributions to the recent solution for the de Donder gauge graviton propagator on de Sitter. We also provide explicit power series expansions for the two structure functions, which are suitable for implementing dimensional regularization. And we evalua ... [J. Math. Phys. 53, 022304 (2012)] published Fri Feb 10, 2012.
Jeans analysis of self-gravitating systems in f(R) gravity
S. Capozziello, M. De Laurentis, I. De Martino, M. Formisano, and S. D. Odintsov
Dynamics and collapse of collisionless self-gravitating systems is described by the coupled collisionless Boltzmann and Poisson equations derived from f(R) gravity in the weak field approximation. Specifically, we describe a system at equilibrium by a time-independent distribution function f(x,v) an ... [Phys. Rev. D 85, 044022 ] published .
Interacting dark energy: Constraints and degeneracies
Timothy Clemson, Kazuya Koyama, Gong-Bo Zhao, Roy Maartens, and Jussi Valiviita
In standard cosmologies, dark energy (DE) interacts only gravitationally with dark matter (DM). There could be a nongravitational interaction in the dark sector, leading to changes in the effective DE equation of state, in the redshift dependence of the DM density and in structure formation. We use ... [Phys. Rev. D 85, 043007 ] published .
Dark radiation from particle decays during big bang nucleosynthesis
Justin L. Menestrina and Robert J. Scherrer
CMB observations suggest the possibility of an extra dark radiation component, while the current evidence from big bang nucleosynthesis (BBN) is more ambiguous. Dark radiation from a decaying particle can affect these two processes differently. Early decays add an additional radiation component to b ... [Phys. Rev. D 85, 047301 ] published .
2.5PN linear momentum flux from inspiralling compact binaries in quasicircular orbits and associated recoil: Nonspinning case
Chandra Kant Mishra, K. G. Arun, and Bala R. Iyer
Anisotropic emission of gravitational waves (GWs) from inspiralling compact binaries leads to the loss of linear momentum and hence gravitational recoil of the system. The loss rate of linear momentum in the far-zone of the source (a nonspinning binary system of black holes in quasicircular orbit) i ... [Phys. Rev. D 85, 044021 ] published .
Growth of perturbations in parametrized gravity for an Einsteinde Sitter universe
Tessa Baker
Parametrized frameworks for modified gravity are potentially useful tools for model-independent tests of general relativity on cosmological scales. The toy model of an Einsteinde Sitter universe provides a safe test bed in which to improve our understanding of their behavior. We implement a mathemat ... [Phys. Rev. D 85, 044020 ] published .
Lagrange coordinates for the Einstein-Euler equations
Todd A. Oliynyk
We derive a new symmetric hyperbolic formulation of the Einstein-Euler equations in Lagrange coordinates that are adapted to the Frauendiener-Walton formulation of the Euler equations. As an application, we use this system to show that the densitized lapse and zero-shift coordinate systems for the v ... [Phys. Rev. D 85, 044019 ] published .
Constraint propagation of C-adjusted formulation. II. Another recipe for robust Baumgarte-Shapiro-Shibata-Nakamura evolution system
Takuya Tsuchiya, Gen Yoneda, and Hisa-aki Shinkai
In order to obtain an evolution system which is robust against the violation of constraints, we present a new set of evolution systems based on the so-called Baumgarte-Shapiro-Shibata-Nakamura equations. The idea is to add functional derivatives of the norm of constraints, C, to the evolution equati ... [Phys. Rev. D 85, 044018 ] published .
Disentangling non-Gaussianity, bias, and general relativistic effects in the galaxy distribution
Marco Bruni, Robert Crittenden, Kazuya Koyama, Roy Maartens, Cyril Pitrou et al.
Local non-Gaussianity, parametrized by f, introduces a scale-dependent bias that is strongest at large scales, precisely where general relativistic (GR) effects also become significant. With future data, it should be possible to constrain f=[script O](1) with high redshift surveys. GR corrections to ... [Phys. Rev. D 85, 041301 ] published .
Apparent horizons with nontrivial topology and the hyperhoop conjecture in six-dimensional space-times
Tomohiro Kurata, Hirotaka Nakayama, and Takahiro Okamoto
We investigate the validity of the hyperhoop conjecture, which claims to determine a necessary and sufficient condition for the formation of black hole horizons in higher-dimensional space-times. Here we consider momentarily static, conformally flat initial data sets, each describing a gravitational ... [Phys. Rev. D 85, 044017 ] published .
Observational cosmology using characteristic numerical relativity: Characteristic formalism on null geodesics
P. J. van der Walt and N. T. Bishop
The characteristic formalism of numerical relativity is based on a system of coordinates aligned with outgoing null cones. While these coordinates were designed for studying gravitational waves, they can also be easily adapted to model cosmological past null cones (PNCs). Similar to observational co ... [Phys. Rev. D 85, 044016 ] published .
Black hole-neutron star mergers for 10 M black holes
Francois Foucart, Matthew D. Duez, Lawrence E. Kidder, Mark A. Scheel, Bela Szilagyi et al.
General relativistic simulations of black hole-neutron star mergers have currently been limited to low-mass black holes (M<=7 M), even though population synthesis models indicate that a majority of mergers might involve more massive black holes (M>=10 M). We present the first general relativistic ... [Phys. Rev. D 85, 044015 ] published .
Weak gravitational lensing in fourth order gravity
A. Stabile and An. Stabile
For a general class of analytic functions f(R,RR,RR) we discuss the gravitational lensing in the Newtonian limit of theory. From the properties of the Gauss-Bonnet invariant it is enough to consider only one curvature invariant between the Ricci tensor and the Riemann tensor. Then, we analyze the dy ... [Phys. Rev. D 85, 044014 ] published .
Superconducting hair on charged black string background
Lukasz Nakonieczny and Marek Rogatko
Behavior of Dirac fermions in the background of a charged black string penetrated by an Abelian Higgs vortex is elaborated. One finds evidence that the system under consideration can support fermion fields acting like a superconducting cosmic string in the sense that a nontrivial Dirac fermion fiel ... [Phys. Rev. D 85, 044013 ] published .
Domain wall solution in F(R) gravity and variation of the fine structure constant
Kazuharu Bamba, Shin'ichi Nojiri, and Sergei D. Odintsov
We construct a domain wall solution in F(R) gravity. We reconstruct a static domain wall solution in a scalar field theory. We also reconstruct an explicit F(R) gravity model in which a static domain wall solution can be realized. Moreover, we show that there could exist an effective (gravitational) ... [Phys. Rev. D 85, 044012 ] published .
Contrasting features of anisotropic loop quantum cosmologies: The role of spatial curvature
Brajesh Gupt and Parampreet Singh
A characteristic feature of loop quantization of the isotropic and Bianchi-I spacetimes is the existence of universal bounds on the energy density and the expansion and shear scalars, independent of the matter content. We investigate the properties of these physical quantities in Bianchi-II and Bian ... [Phys. Rev. D 85, 044011 ] published .
Hamiltonian analysis of 1+1-dimensional massive gravity
J. Kluson
We perform the Hamiltonian analysis of 1+1-dimensional nonlinear massive gravity studied in [C. de Rham, G. Gabadadze, and A. Tolley, arXiv:1107.3820]. We find the constraint structure of the given theory and perform the counting of the physical degrees of freedom. ... [Phys. Rev. D 85, 044010 ] published .
Cosmological tests of general relativity: A principal component analysis
Alireza Hojjati, Gong-Bo Zhao, Levon Pogosian, Alessandra Silvestri, Robert Crittenden et al.
The next generation of weak lensing surveys will trace the evolution of matter perturbations and gravitational potentials from the matter dominated epoch until today. Along with constraining the dynamics of dark energy, they will probe the relations between matter overdensities, local curvature, and ... [Phys. Rev. D 85, 043508 ] published .
Observational constraints on the averaged universe
Chris Clarkson, Timothy Clifton, Alan Coley, and Rockhee Sung
Averaging in general relativity is a complicated operation, due to the general covariance of the theory and the nonlinearity of Einstein's equations. The latter of these ensures that smoothing spacetime over cosmological scales does not yield the same result as solving Einstein's equations with a sm ... [Phys. Rev. D 85, 043506 ] published .
Improvement of the performance of a classical matched filter by an independent component analysis preprocessing
R. De Rosa, L. A. Forte, F. Garufi, and L. Milano
Current gravitational wave searches for compact binaries coalescence are done using a bank of templates (matched filters) on each running detector. Given a network of interferometers, we propose to use a denoising strategy based on an independent component analysis which considers two interferometer ... [Phys. Rev. D 85, 042001 ] published .
Asymptotic stability of vacuum twisting type II metrics
Wlodzimierz Natorf
We generalize the result of Lukacs et al. on asymptotic stability of the Schwarzschild metric with respect to perturbations in the Robinson-Trautman class of metrics to the case of Petrov type II twisting metrics, under the condition of asymptotic flatness at future null infinity. The Bondi energy i ... [J. Math. Phys. 53, 022503 (2012)] published Tue Feb 7, 2012.
Bubbles and black branes in the grand canonical ensemble
Chao Wu, Zhiguang Xiao, and Jianfei Xu
When the phase structure of the black brane in a grand canonical ensemble is discussed, the bubble phase with the same boundary data should be included in this structure. As such, the phase transitions among bubbles, black branes, and hot flat space are possible, therefore giving a much enriched pha ... [Phys. Rev. D 85, 044009 ] published .
Gravitational mass-shift effect in the standard model
P. O. Kazinski
The gravitational mass-shift effect is investigated in the framework of the standard model with the energy cutoff regularization both for stationary and nonstationary backgrounds at the one-loop level. The problem of singularity of the effective potential of the Higgs field on the horizon of a black ... [Phys. Rev. D 85, 044008 ] published .
Stable Lorentzian wormholes in dilatonic Einstein-Gauss-Bonnet theory
Panagiota Kanti, Burkhard Kleihaus, and Jutta Kunz
We discuss the properties of Lorentzian wormholes in dilatonic Einstein-Gauss-Bonnet theory in four spacetime dimensions. These wormholes do not need any form of exotic matter for their existence. A subset of these wormholes is shown to be linearly stable with respect to radial perturbations. We per ... [Phys. Rev. D 85, 044007 ] published .
Extremal charged black holes with a twisted extra dimension
Takamitsu Tatsuoka, Hideki Ishihara, Masashi Kimura, and Ken Matsuno
We construct odd-dimensional extremal charged black hole solutions with a twisted S as an extra dimension on generalized Euclidean Taub-NUT spaces. There exists a null hypersurface where an expansion for an outgoing null geodesic congruence vanishes, then these spacetimes look like black holes. We s ... [Phys. Rev. D 85, 044006 ] published .
Phase structure of the Kerr-AdS black hole
Yu-Dai Tsai, X. N. Wu, and Yi Yang
We study the critical phenomena of Kerr-AdS black hole. Phase structures are observed at different temperatures, T, T and T with various features. We discuss the thermal stability considering the isothermal compressibility and how phase transitions related to each other. The asymptotic value of the ... [Phys. Rev. D 85, 044005 ] published .
Entropic force scenarios and eternal inflation
Taotao Qiu and Emmanuel N. Saridakis
We examine various entropic inflation scenarios, under the light of eternality. After describing the inflation realization and the normal condition for inflation to last at the background level, we investigate the conditions for eternal inflation with the effect of thermal fluctuations produced from ... [Phys. Rev. D 85, 043504 ] published .
The Swift short gamma-ray burst rate density: implications for binary neutron star merger rates. (arXiv:1202.2179v1 [astro-ph.CO])
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Quantum Dynamics for De Sitter Radiation. (arXiv:1202.2227v1 [hep-th])
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Supersymmetric Holst action with matter coupling and parity violation. (arXiv:1202.2232v1 [gr-qc])
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Spiral galaxies rotation curves in the Horava - Lifshitz gravity theory. (arXiv:1202.2233v1 [astro-ph.CO])
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A Particle Probing Thermodynamics in Three-Dimensional Black Hole. (arXiv:1202.2244v1 [gr-qc])
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Quantum Einstein Gravity. (arXiv:1202.2274v1 [hep-th])
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QCD ghost f(T)-gravity model. (arXiv:1202.2278v1 [physics.gen-ph])
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Conformal time dependent Painleve-Gullstrand spacetime. (arXiv:1202.2285v1 [gr-qc])
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Canonical Partition function of Loop Black Holes. (arXiv:1202.2301v1 [gr-qc])
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Constraints on the Hubble Parameter from galaxy clusters and the Validity of the Cosmic Distance Duality Relation. (arXiv:1202.2309v1 [astro-ph.CO])
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Particle confinement and Perturbed Dynamical System in Warped Product Spacetime. (arXiv:1202.2328v1 [gr-qc])
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Supersymmetric dark energy. (arXiv:1004.4984v3 [hep-th] UPDATED)
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DC readout experiment in Enhanced LIGO. (arXiv:1110.2815v2 [physics.ins-det] UPDATED)
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A local Hamiltonian for spherically symmetric gravity coupled to a scalar field. (arXiv:1111.4962v3 [gr-qc] UPDATED)
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The Coincidence Limit of the Graviton Propagator in de Donder Gauge on de Sitter Background. (arXiv:1112.4420v2 [gr-qc] UPDATED)
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Comparative study of loop contributions in AdS and dS. (arXiv:1201.3471v2 [hep-th] UPDATED)
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Quantization in relativistic classical mechanics: the Stueckelberg equation, neutrino oscillation and large-scale structure of the Universe. (arXiv:1202.1404v2 [quant-ph] UPDATED)
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On the Regularization of Kerr-NUT spacetime: I. (arXiv:1202.2095v2 [physics.gen-ph] UPDATED)
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The Ligo-Ligo cross correlation for the detection of relic scalar gravitational waves. (arXiv:astro-ph/0611333v10 CROSS LISTED)
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Symmetrizations of RMHD equations and stability of relativistic current-vortex sheets. (arXiv:1202.1946v1 [math.AP] CROSS LISTED)
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