Results 91 to 100 of about 681 (164)

Causally Simple Spacetimes and Naked Singularities

Iranian Journal of Science
In this paper, We prove a conjecture which states that if M is a nakedly singular future boundary or nakedly singular past boundary spacetime, then the space of null geodesics, N, is non-Hausdorff. Also, we show that every two-dimensional strongly causal spacetime M is causally simple if and only if it is null pseudoconvex.
Mehdi Vatandoost, Rahimeh Pourkhandani, Neda Ebrahimi   +2 more
openaire   +2 more sources

"Singularity" of Levi-Civita Spacetimes

, 2004
3 pages, no figures, submitted to Proceedings of the Tenth Marcel Grossmann Meeting on General Relativity, Rio de Janeiro, July 20-26 ...
Konkowski, D. A., Helliwell, T. M., Wieland, C.   +2 more
openaire   +2 more sources

Bifurcation diagrams for spacetime singularities and black holes

European Physical Journal C: Particles and Fields
We reexamine the focusing effect crucial to the theorems that predict the emergence of spacetime singularities and various results in the general theory of black holes in general relativity.
Spiros Cotsakis
doaj   +1 more source

Hawking-type radiation in transluminal gratings. [PDF]

Proc Natl Acad Sci U S A, 2023
Silveirinha MG.
europepmc   +1 more source

Spinning particle geometries in AdS3/CFT2

Journal of High Energy Physics
We study spinning particle/defect geometries in the context of AdS3/CFT2. These solutions lie below the BTZ threshold, and can be obtained from identifications of AdS3.
Ziyi Li
doaj   +1 more source

A Brief Review of Wormhole Cosmic Censorship

Axioms
Spacetime singularities, in the sense that curvature invariants are infinite at some point or region, are thought to be impossible to observe, and must be hidden within an event horizon.
Leonel Bixano, I. A. Sarmiento-Alvarado, Tonatiuh Matos   +2 more
doaj   +1 more source

Mixmaster chaos in an AdS black hole interior

Journal of High Energy Physics
We derive gravitational backgrounds that are asymptotically Anti-de Sitter, have a regular black hole horizon and which deep in the interior exhibit mixmaster chaotic dynamics.
Marine De Clerck, Sean A. Hartnoll, Jorge E. Santos   +2 more
doaj   +1 more source

Axisymmetric solutions to Einstein field equations via integral transforms. [PDF]

Heliyon, 2023
Batic D, Debru NB, Nowakowski M.
europepmc   +1 more source

Spacetime Singularities and Cosmic Censorship

, 2010
We present here a brief review and discussion on recent developments in the theory of spacetime singularities. After mentioning some key motivations on the main ideas and concepts involved, we take the approach that the singularities will be eventually resolved by the quantum gravity effects.
openaire   +2 more sources

Thermal stability of stealth and de Sitter spacetimes in scalar-tensor gravity. [PDF]

Eur Phys J C Part Fields, 2023
Giardino S, Giusti A, Faraoni V.
europepmc   +1 more source