Date: Thu, 29 Nov 12 01:08:41 GMT Subject: gr-qc daily 5 new + 12 crosses received by eprepget ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Send any comments regarding submissions directly to submitter. ------------------------------------------------------------------------------ Archives at http://arxiv.org/ To unsubscribe, e-mail To: gr-qc@arXiv.org, Subject: cancel ------------------------------------------------------------------------------ received by eprepget from Tue 27 Nov 12 21:00:00 GMT to Wed 28 Nov 12 21:00:00 GMT ------------------------------------------------------------------------------ \\ arXiv:1211.6446 Date: Tue, 27 Nov 2012 21:01:46 GMT (204kb,D) Title: High-order expansions of the Detweiler-Whiting singular field in Kerr spacetime Authors: Anna Heffernan, Adrian Ottewill and Barry Wardell Categories: gr-qc Comments: Extension of the results of arXiv:1204.0794 to the Kerr spacetime \\ In a previous paper, we computed expressions for the Detweiler-Whiting singular field of point scalar, electromagnetic and gravitational charges following a geodesic of the Schwarzschild spacetime. We now extend this to the case of equatorial orbits in Kerr spacetime, using coordinate and covariant approaches to compute expansions of the singular field in scalar, electromagnetic and gravitational cases. As an application, we give the calculation of previously unknown mode-sum regularisation parameters. We also propose a new application of high order approximations to the singular field, showing how they may be used to compute m-mode regularization parameters for use in the m-mode effective source approach to self-force calculations. \\ ( http://arxiv.org/abs/1211.6446 , 204kb) ------------------------------------------------------------------------------ \\ arXiv:1211.6534 Date: Wed, 28 Nov 2012 07:53:12 GMT (13kb) Title: Stability Analysis in N dimensional Gravitational collapse with equation of state Authors: Sanjay Sarwe and R. V. Saraykar Categories: gr-qc Comments: 11 pages. arXiv admin note: substantial text overlap with arXiv:gr-qc/0310106, arXiv:gr-qc/0504034; and text overlap with arXiv:gr-qc/0406052 by other authors \\ We study stability of occurrence of black holes and naked singularities that arise as a final state for a complete gravitational collapse of type I matter field in a spherically symmetric $N$ dimensional spacetime with equation of state $p = k \rho$, $0 \leq k \leq 1$. We prove that for a regular initial data comprising of pressure (or density) profiles at an initial surface $t = t_{i}$, from which the collapse evolves, there exists a large class of the velocity functions and classes of solutions of Einstein equations, such that the spacetime evolution goes to a final state which is either a black hole or a naked singularity. We further prove that in an infinite dimensional separable Banach space, the set of regular initial data leading the collapse to a black hole or a naked singularity, forms an open subset of the set of all regular initial data. In this sense, the gravitational collapse leading to either a black hole or a naked singularity is stable. These results are discussed and analyzed in the light of the cosmic censorship hypothesis in black hole physics. \\ ( http://arxiv.org/abs/1211.6534 , 13kb) ------------------------------------------------------------------------------ \\ arXiv:1211.6558 Date: Wed, 28 Nov 2012 09:55:13 GMT (17kb) Title: New tests of local Lorentz invariance and local position invariance of gravity with pulsars Authors: Lijing Shao, Norbert Wex, Michael Kramer Categories: gr-qc astro-ph.GA Comments: 3 pages, 1 figure; submitted to Proceedings of the Thirteenth Marcel Grossmann Meeting, (eds.) Kjell Rosquist, Robert T Jantzen, Remo Ruffini \\ New tests are proposed to constrain possible deviations from local Lorentz invariance and local position invariance in the gravity sector. By using precise timing results of two binary pulsars, i.e., PSRs J1012+5307 and J1738+0333, we are able to constrain (strong-field) parametrized post-Newtonian parameters $\hat{\alpha}_1$, $\hat{\alpha}_2$, $\hat{\xi}$ to high precision, among which, $|\hat{\xi}| < 3.1\times10^{-4}$ (95% C.L.) is reported here for the first time. \\ ( http://arxiv.org/abs/1211.6558 , 17kb) ------------------------------------------------------------------------------ \\ arXiv:1211.6619 Date: Wed, 28 Nov 2012 14:55:04 GMT (309kb) Title: Generation of Cosmological Flows in General Relativity (Features and Properties of Integrable Singularities) Authors: V. N. Lukash, E. V. Mikheeva, and V. N. Strokov Categories: gr-qc astro-ph.CO hep-th Comments: 21 pages, 3 figures, extended Introduction and minor changes as compared to the published version Journal-ref: Phys. Usp. 55 831-837 (2012) DOI: 10.3367/UFNe.0182.201208k.0894 \\ We discuss status of the singularity problem in General Relativity and argue that the requirement that a physical solution must be completely free of singularities may be too strong. As an example, we consider properties of the integrable singularities and show that they represent light horizons separating T-regions of black and white holes. Connecting an astrophysical black hole to a white hole, they lead to a natural mechanism of generating new universes. Under favorable conditions the new universes will also contain black holes which, in their turn, will give rise to another generation of universes. In this case the cosmological evolutionary tree will continue to grow to form the "hyperverse". This scenario essentially differs from other known mechanisms, such as bounce, birth from "nothing", baby-universe scenario, etc. \\ ( http://arxiv.org/abs/1211.6619 , 309kb) ------------------------------------------------------------------------------ \\ arXiv:1211.6632 Date: Wed, 28 Nov 2012 15:23:04 GMT (190kb,D) Title: Numerical Relativity in Spherical Polar Coordinates: Evolution Calculations with the BSSN Formulation Authors: Thomas W. Baumgarte, Pedro J. Montero, Isabel Cordero-Carri\'on, Ewald M\"uller Categories: gr-qc astro-ph.SR Comments: 14 pages, 10 figures, submitted to PRD \\ In the absence of symmetry assumptions most numerical relativity simulations adopt Cartesian coordinates. While Cartesian coordinates have some desirable properties, spherical polar coordinates appear better suited for certain applications, including gravitational collapse and supernova simulations. Development of numerical relativity codes in spherical polar coordinates has been hampered by the need to handle the coordinate singularities at the origin and on the axis, for example by careful regularization of the appropriate variables. Assuming spherical symmetry and adopting a covariant version of the BSSN equations, Montero and Cordero-Carri\'on recently demonstrated that such a regularization is not necessary when a partially implicit Runge-Kutta (PIRK) method is used for the time evolution of the gravitational fields. Here we report on an implementation of the BSSN equations in spherical polar coordinates without any symmetry assumptions. Using a PIRK method we obtain stable simulations in three spatial dimensions without the need to regularize the origin or the axis. We perform and discuss a number of tests to assess the stability, accuracy and convergence of the code, namely weak gravitational waves, "hydro-without-hydro" evolutions of spherical and rotating relativistic stars in equilibrium, and single black holes. \\ ( http://arxiv.org/abs/1211.6632 , 190kb) %-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%- ------------------------------------------------------------------------------ \\ arXiv:1211.6431 (*cross-listing*) Date: Tue, 27 Nov 2012 21:00:02 GMT (113kb,D) Title: Hints on halo evolution in SFDM models with galaxy observations Authors: Alma X. Gonzalez-Morales, Alberto Diez-Tejedor, L. Arturo Urena-Lopez and Octavio Valenzuela Categories: astro-ph.CO gr-qc Comments: 5 pages, 2 figures, 1 table \\ A massive, self-interacting scalar field has been considered as a possible candidate for the dark matter in the universe. We present an observational constraint to the model arising from strong lensing observations in galaxies. The result points to a discrepancy in the properties of scalar field dark matter halos for dwarf and lens galaxies, mainly because halo parameters are directly related to physical quantities in the model. This is an important indication that it becomes necessary to have a better understanding of halo evolution in scalar field dark matter models, where the presence of baryons can play an important role. \\ ( http://arxiv.org/abs/1211.6431 , 113kb) ------------------------------------------------------------------------------ \\ arXiv:1211.6468 (*cross-listing*) Date: Tue, 27 Nov 2012 22:29:05 GMT (44kb) Title: Using Isabelle to verify special relativity, with application to hypercomputation theory Authors: Mike Stannett and Istv\'an N\'emeti Categories: cs.LO gr-qc Comments: 14 pages, submitted to ACM Transactions on Computational Logic (TOCL) ACM-class: F.4.1; J.2 \\ Logicians at the R\'enyi Mathematical Institute in Budapest have spent several years developing versions of relativity theory (special, general, and other variants) based wholly on first order logic, and have argued in favour of the physical decidability, via exploitation of cosmological phenomena, of formally undecidable questions such as the Halting Problem and the consistency of set theory. The Hungarian theories are very extensive, and their associated proofs are intuitively very satisfying, but this brings its own risks since intuition can sometimes be misleading. As part of a joint project, researchers at Sheffield have recently started generating rigorous machine-verified versions of the Hungarian proofs, so as to demonstrate the soundness of their work. In this paper, we explain the background to the project and demonstrate an Isabelle proof of the theorem "No inertial observer can travel faster than light". This approach to physical theories and physical computability has several pay-offs: (a) we can be certain our intuition hasn't led us astray (or if it has, we can identify where this has happened); (b) we can identify which axioms are specifically required in the proof of each theorem and to what extent those axioms can be weakened (the fewer assumptions we make up-front, the stronger the results); and (c) we can identify whether new formal proof techniques and tactics are needed when tackling physical as opposed to mathematical theories. \\ ( http://arxiv.org/abs/1211.6468 , 44kb) ------------------------------------------------------------------------------ \\ arXiv:1211.6478 (*cross-listing*) Date: Tue, 27 Nov 2012 23:35:30 GMT (27kb) Title: A conceptual problem for non-commutative inflation and the new approach for non-relativistic inflationary equation of state Authors: U. D. Machado and R. Opher Categories: astro-ph.CO gr-qc hep-th \\ In a previous paper, we connected the phenomenological non-commutative inflation of Alexander, Brandenberger and Magueijo (2003, 2005 and 2007) with the formal representation theory of groups and algebras. In that paper, the fundamental equations of inflation followed as a consequence of a deformation of the Poincar\'e group, which induces a particular quantum representation. In this paper, we show that there exists a conceptual problem with the kind of representation that leads to the fundamental equations of the model and that the procedure to obtain those equations should be modified according to one of two possible proposals. One of them relates to the general theory of Hopf algebras. The other is based on a representation theorem of Von Neumann algebras, a proposal already suggested by us to take into account interactions in the inflationary equation of state. This reopens the problem of finding inflationary deformed dispersion relations and all developments which followed the first paper of Non-commutative Inflation. \\ ( http://arxiv.org/abs/1211.6478 , 27kb) ------------------------------------------------------------------------------ \\ arXiv:1211.6487 (*cross-listing*) Date: Wed, 28 Nov 2012 00:28:47 GMT (1624kb) Title: Effects of Kerr Strong Gravity on Quasar X-ray Microlensing Authors: Bin Chen, Xinyu Dai, Eddie Baron, Ronald Kantowski Categories: astro-ph.HE astro-ph.CO astro-ph.GA gr-qc Comments: 26 pages, 7 figures, ApJ submitted \\ Recent quasar microlensing observations have constrained the sizes of X-ray emission regions to be within about 10 gravitational radii of the central supermassive black hole. Therefore, the X-ray emission from lensed quasars is first strongly lensed by the black hole before it is lensed by the foreground galaxy and star fields. We present a scheme that combines the initial strong lensing of a Kerr black hole with standard linearized microlensing by intervening stars. We find that X-ray microlensed light curves incorporating Kerr strong gravity can differ significantly from standard curves. The amplitude of the fluctuations in the light curves can increase or decrease by ~0.65-0.75 mag by including Kerr strong gravity. Larger inclination angles give larger amplitude fluctuations in the microlensing light curves. Consequently, current X-ray microlensing observations might have under or overestimated the sizes of the X-ray emission regions. We estimate this bias using a simple metric based on the amplitude of magnitude fluctuations. The half light radius of the X-ray emission region can be underestimated up to ~50% or overestimated up to ~20%. Underestimates are found in most situations we have investigated. The only exception is for a disk with large spin, radially flat emission profile, and observed nearly face on, where an overestimate is found. Thus, more accurate microlensing size constraints should be obtainable by including Kerr lensing. The caustic crossing time can differ by months after including Kerr strong gravity. A simultaneous monitoring of gravitational lensed quasars in both X-ray and optical bands with densely sampled X-ray light curves might reveal this feature. We conclude that it should be possible to constrain important parameters such as inclination angles and black hole spins from combined Kerr and microlensing effects. \\ ( http://arxiv.org/abs/1211.6487 , 1624kb) ------------------------------------------------------------------------------ \\ arXiv:1211.6584 (*cross-listing*) Date: Wed, 28 Nov 2012 11:50:04 GMT (18kb) Title: Quanta: The Originality of Einstein's Approach to Relativity? Authors: Christian Bracco Categories: physics.hist-ph gr-qc \\ We suggest that not only quanta may have played a role in Einstein's ideas on relativity, but that they themselves may be related to the dynamical and relativistic behaviour of the electromagnetic field exhibited in a Poincar\'e's 1900 paper, in particular to the identical transformation law of energy and frequency for bounded plane waves. \\ ( http://arxiv.org/abs/1211.6584 , 18kb) ------------------------------------------------------------------------------ \\ arXiv:1211.6585 (*cross-listing*) Date: Wed, 28 Nov 2012 11:55:57 GMT (18kb) Title: A Brief History of the Energy-Momentum Tensor; 1900-1912 Authors: Jean-Pierre Provost Categories: physics.hist-ph gr-qc \\ A critical look at the history of relativistic dynamics. \\ ( http://arxiv.org/abs/1211.6585 , 18kb) ------------------------------------------------------------------------------ \\ arXiv:1211.6657 (*cross-listing*) Date: Wed, 28 Nov 2012 16:57:09 GMT (1913kb) Title: Interacting warm dark matter Authors: Norman Cruz, Guillermo Palma, David Zambrano, Arturo Avelino Categories: astro-ph.CO gr-qc Comments: 22 pages, 20 figures, 1 table. Submitted to the Journal of Cosmology and Astroparticle Physics (JCAP) \\ We explore a cosmological model composed by a dark matter fluid interacting with a dark energy fluid. The interaction term has the non-linear "lambda * rho_m^alpha * rho_e^beta" form, where rho_m and rho_e are the energy densities of the dark matter and dark energy, respectively. The parameters alpha and beta in principle are not constraint to take any particular values. We perform an analytical study of the evolution equations, finding the fixed points and their stability properties in order to characterize suitable physical regions in the space of the dark matter and dark energy densities. The constants (lambda, alpha, beta) as well as (w_m, w_e) of the EoS of dark matter and dark energy respectively were estimated using the cosmological observations of the type Ia supernovae data set and the Hubble parameter H(z) at different redshift. We found that the best fit to data is for a model with a phantom dark energy interacting with a warm dark matter, where the energy transfer comes from the dark energy to the dark matter and with an interacting term of the simple form "rho_m * rho_e". This result is consistent with stable solutions of the dynamical system analysis. \\ ( http://arxiv.org/abs/1211.6657 , 1913kb) ------------------------------------------------------------------------------ \\ arXiv:1211.6670 (*cross-listing*) Date: Wed, 28 Nov 2012 17:31:59 GMT (930kb) Title: Gravity, Nonlinear Gauge Fields and Charge Confinement/Deconfinement Authors: Eduardo Guendelman, Alexander Kaganovich, Emil Nissimov, Svetlana Pacheva Categories: hep-th gr-qc Comments: To appear in the proceedings of "Seventh Meeting in Modern Mathematical Physics", B. Dragovic and Z. Rakic eds. (Belgrade, Sept 2012) \\ We discuss in some detail the properties of gravity (including f(R)-gravity) coupled to non-standard nonlinear gauge field system containing a square root of the usual Maxwell Lagrangian. The latter is known to produce in flat spacetime a QCD-like confinement. Inclusion of gravity triggers various physically interesting effects: new mechanism for dynamical generation of cosmological constant; non-standard black hole solutions with constant vacuum electric field and with "hedge-hog"-type spacetime asymptotics, which are shown to obey the first law of black hole thermodynamics; new "tubelike" solutions of Levi-Civita-Bertotti-Robinson type; charge-"hiding" and charge-confining "thin-shell" wormhole solutions; dynamical effective gauge couplings and confinement-deconfinement transition effect when coupled to quadratic R^2-gravity. \\ ( http://arxiv.org/abs/1211.6670 , 930kb) ------------------------------------------------------------------------------ \\ arXiv:1211.6685 (*cross-listing*) Date: Wed, 28 Nov 2012 18:03:19 GMT (11kb) Title: Hawking Radiation in a Plebanski-Demianski Black Hole Authors: Jesus Alberto Cazares Montes Categories: hep-th gr-qc Comments: 13 pages \\ We show in this paper the flux of Hawking radiation in a Plebanski-Demianski black hole from gauge and gravitational anomalies point of view. We also show this calculations are general and the results from earlier known articles can be obtained from this one. \\ ( http://arxiv.org/abs/1211.6685 , 11kb) ------------------------------------------------------------------------------ \\ arXiv:1211.6701 (*cross-listing*) Date: Wed, 28 Nov 2012 18:51:32 GMT (2844kb,D) Title: Cosmological perturbations during the Bose-Einstein condensation of dark matter Authors: R. C. Freitas and S. V. B. Gon\c{c}alves Categories: astro-ph.CO gr-qc Comments: 19 pages, 8 figures \\ In the present work, we analyze the evolution of the scalar and tensorial perturbations and the quantities relevant for the physical description of the Universe, as the density contrast of the scalar perturbations and the gravitational waves energy density during the Bose-Einstein condensation of dark matter. The behavior of these parameters during the Bose-Einstein phase transition of dark matter is analyzed in details. To study the cosmological dynamics and evolution of scalar and tensorial perturbations in a Universe with and without cosmological constant we use both analytical and numerical methods. The Bose-Einstein phase transition modifies the evolution of gravitational waves of cosmological origin, as well as the process of large-scale structure formation. \\ ( http://arxiv.org/abs/1211.6701 , 2844kb) ------------------------------------------------------------------------------ \\ arXiv:1211.6713 (*cross-listing*) Date: Wed, 28 Nov 2012 19:26:08 GMT (732kb,D) Title: Large-Scale Image Processing with the ROTSE Pipeline Authors: L. K. Nuttall, D. J. White, P. J. Sutton, E. J. Daw, V. S. Dhillon, W. Zheng, C. Akerlof Categories: astro-ph.IM gr-qc Report-no: LIGO-P1200131-v4 \\ Electromagnetic (EM) observations of gravitational-wave (GW) sources would bring unique insights into a source which are not available from either channel alone. However EM followup of GW events presents new challenges. GW events will have large sky error regions, on the order of 10-100 square degrees, which can be made up of many disjoint patches. When searching such large areas there is potential contamination by EM transients unrelated to the GW event. Furthermore, the characteristics of possible EM counterparts to GW events are also uncertain. It is therefore desirable to be able to assess the statistical significance of a candidate EM counterpart, which can only be done by performing background studies of large data sets. Current image processing pipelines such as that used by ROTSE are not usually optimised for large-scale processing. We have automated the ROTSE image analysis, and supplemented it with a post-processing unit for candidate validation and classification. We also propose a simple ad hoc statistic for ranking candidates as more likely to be associated with the GW trigger. We demonstrate the performance of the automated pipeline and ranking statistic using archival ROTSE data. EM candidates from a randomly selected set of images are compared to a background estimated from analysis of 102 additional sets of archival images. The pipeline's detection efficiency is computed empirically by re-analysis of the images after adding simulated optical transients that follow typical light curves for gamma-ray burst afterglows and kilonovae. We show that the automated pipeline rejects most background events and is sensitive to simulated transients to limiting magnitudes consistent with the limiting magnitude of the images. \\ ( http://arxiv.org/abs/1211.6713 , 732kb) ------------------------------------------------------------------------------ \\ arXiv:1211.6734 (*cross-listing*) Date: Wed, 28 Nov 2012 20:51:05 GMT (16kb) Title: Hyper-Entropic Gravitational Fireballs (Grireballs) with Firewalls Authors: Don N. Page Categories: hep-th gr-qc Comments: 23 pages, LaTeX \\ Recently there has been much discussion as to whether old black holes have firewalls at their surfaces that would destroy infalling observers. Though I suspect that a proper handling of nonlocality in quantum gravity may show that firewalls do not exist, it is interesting to consider an extension of the firewall idea to what seems to be the logically possible concept of hyper-entropic gravitational hot objects (gravitational fireballs or grireballs for short) that have more entropy than ordinary black holes of the same mass. Here some properties of such grireballs are discussed under various assumptions, such as assuming that their radii and entropies both go as powers of their masses as the one independent parameter, or assuming that their radii depend on both their masses and their entropies as two independent parameters. \\ ( http://arxiv.org/abs/1211.6734 , 16kb) %%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%%--%% ------------------------------------------------------------------------------ \\ arXiv:1202.2105 (*cross-listing*) replaced with revised version Wed, 28 Nov 2012 10:01:09 GMT (20kb) Title: Scalar-tensor theories, trace anomalies and the QCD-frame Authors: Francesco Nitti and Federico Piazza Categories: hep-th gr-qc hep-ph Comments: 10 pages. Minor changes to the main text, appendix added. To appear on PRD \\ ( http://arxiv.org/abs/1202.2105 , 20kb) ------------------------------------------------------------------------------ \\ arXiv:1205.0258 replaced with revised version Wed, 28 Nov 2012 16:58:45 GMT (9kb) Title: Drift, Drag and Brownian motion in the Davies-Unruh bath Authors: Sanved Kolekar and T. Padmanabhan Categories: gr-qc astro-ph.CO hep-th Comments: v1: 5 pages, no figures, v2: some discussion added, matches published version Journal-ref: Phys. Rev. D 86, 104057 (2012) DOI: 10.1103/PhysRevD.86.104057 \\ ( http://arxiv.org/abs/1205.0258 , 9kb) ------------------------------------------------------------------------------ \\ arXiv:1205.2685 replaced with revised version Wed, 28 Nov 2012 19:29:43 GMT (553kb) Title: Thin-shell wormholes with a generalized Chaplygin gas in Einstein-Born-Infeld theory Authors: Ernesto F. Eiroa, Griselda Figueroa Aguirre Categories: gr-qc Comments: 9 pages, 6 figures; v2: improved version Journal-ref: Eur. Phys. J. C (2012) 72:2240 DOI: 10.1140/epjc/s10052-012-2240-6 \\ ( http://arxiv.org/abs/1205.2685 , 553kb) ------------------------------------------------------------------------------ \\ arXiv:1206.0037 replaced with revised version Tue, 27 Nov 2012 22:53:01 GMT (67kb) Title: Quasinormal modes for the scattering on a naked Reissner-Nordstrom singularity Authors: Cecilia Chirenti, Alberto Saa, Jozef Skakala Categories: gr-qc Comments: v3: final version to appear in Physical Review D, 17 pages, 10 figures, v3: only minor cosmetic changes (few typos corrected) with respect to v2, v1: the same physics, but missing one section \\ ( http://arxiv.org/abs/1206.0037 , 67kb) ------------------------------------------------------------------------------ \\ arXiv:1207.0716 replaced with revised version Wed, 28 Nov 2012 15:45:56 GMT (26kb) Title: A uniform treatment of the orbital effects due to a violation of the Strong Equivalence Principle in the gravitational Stark-like limit Authors: L. Iorio Categories: gr-qc astro-ph.EP astro-ph.GA physics.space-ph Comments: LaTex2e, 14 pages, no figures, no tables, 42 references. To appear in Classical and Quantum Gravity (CQG) \\ ( http://arxiv.org/abs/1207.0716 , 26kb) ------------------------------------------------------------------------------ \\ arXiv:1207.4073 (*cross-listing*) replaced with revised version Tue, 27 Nov 2012 23:04:29 GMT (26kb) Title: The Rotating Black Hole in Renormalizable Quantum Gravity: The Three-Dimensional Ho\v{r}ava Gravity Case Authors: Mu-In Park Categories: hep-th gr-qc Comments: Some more elaborate discussions on the thermodynamics issue, the failure of the usual black hole thermodynamics, in the last paragraph of Sec. IV, Typos Corrected, 11 pages, 3 figures, Accepted in PLB \\ ( http://arxiv.org/abs/1207.4073 , 26kb) ------------------------------------------------------------------------------ \\ arXiv:1208.1523 replaced with revised version Wed, 28 Nov 2012 15:51:00 GMT (18kb) Title: Local cosmological effects of the order of H in the orbital motion of a binary system Authors: Lorenzo Iorio Categories: gr-qc astro-ph.CO astro-ph.EP physics.space-ph Comments: LaTex, 8 pages, no figures, 4 tables. Version matching the one at press in Monthly Notices of the Royal Astronomical Society (MNRAS) \\ ( http://arxiv.org/abs/1208.1523 , 18kb) ------------------------------------------------------------------------------ \\ arXiv:1208.1673 replaced with revised version Wed, 28 Nov 2012 00:50:29 GMT (73kb) Title: Covariant kinematics and gravitational bounce in Finsler space-times Authors: A. P. Kouretsis, M. Stathakopoulos and P. C. Stavrinos Categories: gr-qc Comments: 30 pages, 2 figures, revised version with references added; to appear in PRD \\ ( http://arxiv.org/abs/1208.1673 , 73kb) ------------------------------------------------------------------------------ \\ arXiv:1208.4871 replaced with revised version Wed, 28 Nov 2012 13:58:37 GMT (346kb,D) Title: Vacuum Instability in Chern-Simons Gravity Authors: Sergei Dyda, Eanna E. Flanagan and Marc Kamionkowski Categories: gr-qc astro-ph.CO hep-th Comments: 8 pages, 2 figures; final published version \\ ( http://arxiv.org/abs/1208.4871 , 346kb) ------------------------------------------------------------------------------ \\ arXiv:1210.3808 replaced with revised version Wed, 28 Nov 2012 20:38:38 GMT (10kb) Title: Spacetimes with all scalar curvature invariants in terms of the Cosmological Constant Authors: David McNutt Categories: gr-qc math.DG Comments: 9 pages MSC-class: 53B30, 53B50, 83C20 \\ ( http://arxiv.org/abs/1210.3808 , 10kb) ------------------------------------------------------------------------------ \\ arXiv:1210.7651 (*cross-listing*) replaced with revised version Wed, 28 Nov 2012 14:12:04 GMT (98kb) Title: Maximal Fermi charts and geometry of inflationary universes Authors: David Klein Categories: math-ph gr-qc math.DG math.MP MSC-class: 83F05, 83C10 \\ ( http://arxiv.org/abs/1210.7651 , 98kb) ------------------------------------------------------------------------------ \\ arXiv:1211.5106 (*cross-listing*) replaced with revised version Wed, 28 Nov 2012 15:59:14 GMT (13kb) Title: Gas of wormholes in Euclidean quantum field theory Authors: E. P. Savelova Categories: hep-th gr-qc Comments: 11 pages, some misprints removed \\ ( http://arxiv.org/abs/1211.5106 , 13kb) %%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%---%%%--- For subscribe options to combined physics archives, e-mail To: physics@arXiv.org, Subject: subscribe ----------------------------------------------------------------------------- For help on viewing and making submissions, see http://arXiv.org/help/ For a list of archive mirror sites, see http://arXiv.org/servers.html ----------------------------------------------------------------------------- Third-party submissions cause excessive problems. Author self-submissions are exceedingly preferred. E-mail submissions have been discontinued in favor of better support for Web submissions. See http://arXiv.org/help/uploads