Results 21 to 30 of about 35,096 (197)
Strong cosmic censorship conjecture for a charged BTZ black hole
Journal of High Energy Physics, 2022 The strong cosmic censorship conjecture, whose validation asserts the deterministic nature of general relativity, has been studied for charged BTZ black holes in three dimensional general relativity, as well as for Nth order pure Lovelock gravity in d=2N+
Chiranjeeb Singha +2 more
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Exploration of a singular fluid spacetime [PDF]
General Relativity and Gravitation, 2021 AbstractWe investigate the properties of a special class of singular solutions for a self-gravitating perfect fluid in general relativity: the singular isothermal sphere. For arbitrary constant equation-of-state parameter $$w=p/\rho $$ w = p /
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Spacetimes with singularities [PDF]
Analele Universitatii "Ovidius" Constanta - Seria Matematica, 2012 Abstract We report on some advances made in the problem of singularities in general relativity.First is introduced the singular semi-Riemannian geometry for metrics which can change their signature (in particular be degenerate). The standard operations like covariant contraction, covariant derivative, and constructions like the Riemann curvature are ...
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COSMOLOGICAL SINGULARITIES IN FLRW SPACETIMES [PDF]
The Twelfth Marcel Grossmann Meeting, 2012 3 pages, ws-procs975x65.cls to appear in Proceedings of 12th Marcel Grossmann Meeting ...
Fernández Jambrina, Leonardo +1 more
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Singularities in hyperscaling violating spacetimes [PDF]
Journal of High Energy Physics, 2013 We examine spacetimes which generalize Lifshitz scaling to allow hyperscaling violation invariance (i.e. a constant conformal transformation) for the types of singularities frequently found in the Lifshitz case. We find that most of these spacetimes suffer either from a traditional naked curvature singularity or a null curvature singularity robust ...
Copsey, Keith, Mann, Robert
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Generic absence of strong singularities in loop quantum Bianchi-IX spacetimes [PDF]
, 2017 We study the generic resolution of strong singularities in loop quantized effective Bianchi-IX spacetime in two different quantizations - the connection operator based `A' quantization and the extrinsic curvature based `K' quantization.
Saini, Sahil, Singh, Parampreet
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Singularities in FLRW spacetimes
Physics Letters B, 2017 We point out that past-incompleteness of geodesics in FLRW spacetimes does not necessarily imply that these spacetimes start from a singularity. Namely, if a test particle that follows such a trajectory has a non-vanishing velocity, its energy was super-Planckian at some time in the past if it kept following that geodesic. That indicates a breakdown of
Lam, Huibert het, Prokopec, Tom
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On the assumptions leading to the information loss paradox
Journal of High Energy Physics, 2021 The information loss paradox is usually stated as an incompatibility between general relativity and quantum mechanics. However, the assumptions leading to the problem are often overlooked and, in fact, a careful inspection of the main hypothesises ...
Luca Buoninfante +2 more
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Ambient cosmology and spacetime singularities [PDF]
, 2014 We present a new approach to the issues of spacetime singularities and cosmic censorship in general relativity. This is based on the idea that standard 4-dimensional spacetime is the conformal infinity of an ambient metric for the 5-dimensional Einstein ...
Antoniadis, Ignatios, Cotsakis, Spiros
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Classical and Quantum Strings in plane waves, shock waves and spacetime singularities: synthesis and new results [PDF]
, 2003 Key issues of classical and quantum strings in gravitational plane waves, shock waves and spacetime singularities are synthetically understood. This includes the string mass and mode number excitations, energy-momentum tensor, scattering amplitudes ...
Sanchez, Norma G.
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