Results 1 to 10 of about 295,670 (287)
Naked singularity, firewall, and Hawking radiation
Scientific Reports, 2017 Spacetime singularity has always been of interest since the proof of the Penrose-Hawking singularity theorem. Naked singularity naturally emerges from reasonable initial conditions in the collapsing process.
Hongsheng Zhang
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Orbifolds and finite group representations [PDF]
International Journal of Mathematics and Mathematical Sciences, 2001 We present our recent understanding on resolutions of Gorenstein orbifolds, which involves the finite group representation theory. We concern only the quotient singularity of hypersurface type.
Li Chiang, Shi-Shyr Roan
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Black hole solutions in mimetic Born-Infeld gravity [PDF]
European Physical Journal C: Particles and Fields, 2018 The vacuum, static, and spherically symmetric solutions in the mimetic Born-Infeld gravity are studied. The mimetic Born-Infeld gravity is a reformulation of the Eddington-inspired-Born-Infeld (EiBI) model under the mimetic approach.
Che-Yu Chen +2 more
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Singularity Theory in Classical Cosmology [PDF]
Il Nuovo Cimento B Series 11, 1995 This paper compares recent approaches appearing in the literature on the singularity problem for space-times with nonvanishing torsion.Comment: 4 pages, plain-tex, published in Nuovo Cimento B, volume 107, pages 849-851, year ...
A. J. Fennelly +6 more
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Stability analysis for Selkov-Schnakenberg reaction-diffusion system
Open Mathematics, 2021 This study provides semi-analytical solutions to the Selkov-Schnakenberg reaction-diffusion system. The Galerkin method is applied to approximate the system of partial differential equations by a system of ordinary differential equations.
Al Noufaey K. S.
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Cosmological theory without singularities [PDF]
Physical Review D, 1993 A theory of gravitation is constructed in which all homogeneous and isotropic solutions are nonsingular, and in which all curvature invariants are bounded. All solutions for which curvature invariants approach their limiting values approach de Sitter space. The action for this theory is obtained by a higher derivative modification of Einstein's theory.
Brandenberger, R. +2 more
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Advances in Mechanical Engineering, 2021 In this paper, a more computationally convenient singularity condition of the enveloped surface is proposed using the theory of linear algebra. Its preconditions are only the tangential vector of the enveloping surface, the relative velocity vector, and ...
Mu Shi-Bo +4 more
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5D and 6D SCFTs from $\mathbb{C}^3$ orbifolds
SciPost Physics, 2022 We study the orbifold singularities $X=\mathbb{C}^3/\Gamma$ where $\Gamma$ is a finite subgroup of $SU(3)$. M-theory on this orbifold singularity gives rise to a 5d SCFT, which is investigated with two methods.
Jiahua Tian, Yi-Nan Wang
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Capturing information on curves and surfaces from their projected images
International Journal of Mathematics for Industry, 2020 Obtaining complete information about the shape of an object by looking at it from a single direction is impossible in general. In this paper, we theoretically study obtaining differential geometric information of an object from orthogonal projections in ...
Masaru Hasegawa +2 more
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Cyclic spacetimes through singularity scattering maps. The laws of quiescent bounces
Journal of High Energy Physics, 2022 For spacetimes containing quiescent singularity hypersurfaces we propose a general notion of junction conditions based on a prescribed singularity scattering map, as we call it, and we introduce the notion of a cyclic spacetime (also called a multiverse)
Bruno Le Floch +2 more
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