Results 131 to 140 of about 108,791 (169)

A note on the polynomial approximation of vertex singularities in the boundary element method in three dimensions [PDF]

, 2008
We study polynomial approximations of vertex singularities of the type $r^\lambda |\log r|^\beta$ on three-dimensional surfaces. The analysis focuses on the case when $\lambda > -\frac 12$.
Bespalov, A
core   +1 more source

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

The enhancon mechanism in string theory [PDF]

, 2002
The enhancon mechanism is a specific phenomenon in string theory which resolves a certain naked spacetime singularity arising in the supergravity description related to N = 2 supersymmetric pure gauge theory.
Järv, Laur
core  

Gauss-Bonnet gravity and spacetime singularities

Physical Review D
We investigate the effect of higher-order curvature terms, specifically Gauss-Bonnet terms, on spacetime singularities in five dimensions. For FLRW cosmologies, we demonstrate that Gauss-Bonnet terms can replace the Big Bang/Crunch with a "sudden" singularity, characterized by a finite scale factor and Hubble rate but diverging higher-order derivatives.
Tariq Allaithy, Adel Awad, Mohamed Hany Radwan, Mohsen Zahran   +3 more
openaire   +2 more sources

Local properties and statistics of phase singularities in generic wavefields

, 2001
This paper is a review and extension of recent work by Berry and Dennis (Proc R Soc Lond A456, pp2059, 2000; A457, pp141-155, 2001), where the geometric structure of phase singularities (wave dislocations) in waves is studied, particularly for ...
Dennis, MR, Mark Dennis, Dennis, Mark, Dennis, Mark; id_orcid   +3 more
core   +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

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

Spacetime and Reality: Facing the Ultimate Judge [PDF]

, 2012
Over a hundred years ago in his paper "Space and Time" Hermann Minkowski demonstrated the profound meaning of the relativity postulate - the experimental fact that physical phenomena are the same in all inertial reference frames implies that the ...
Petkov, Vesselin
core  

Geometrical resolution of spacetime singularities [PDF]

, 2010
General relativity predicts the existence of gravitational singularities at the classical level: our universe started with the big bang, and massive stars can collapse into black holes.
De Roo, Frederik
core  

Curious spacetime singularities

Acta Physica Polonica B, 2007
This paper briefly discusses the nature of curvature singularities in asymptotically flat van Stockum spacetimes.
openaire   +1 more source