Influence of intrinsic spin in the formation of singularities for inhomogeneous effective dust space-times

被引：3
作者：
Luz, Paulo [1 ,2 ]
Mena, Filipe C. [1 ,3 ]
Ziaie, Amir Hadi [4 ]
机构：
[1] Univ Minho, Ctr Matemat, Campus Gualtar, P-4710037 Braga, Portugal
[2] Univ Lisbon, Dept Fis, Ctr Astrofis & Gravitacao CENTRA, Inst Super Tecn, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal
[3] Univ Lisbon, Inst Super Tecn, Dept Matemat, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal
[4] Res Inst Astron & Astrophys Maragha, POB 55134-441, Maragha, Iran
来源：
CLASSICAL AND QUANTUM GRAVITY | 2019年 / 36卷 / 01期
关键词：
Einstein-Cartan theory; gravitational collapse; singularities; GRAVITATIONAL COLLAPSE; GENERAL-RELATIVITY; TORSION; FLUID; EQUATIONS;
D O I：
10.1088/1361-6382/aae9ff
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The evolution of inhomogeneous space-times composed of uncharged fermions is studied for Szekeres metrics which have no Killing vectors, in general. Using the Einstein-Cartan theory to include the effects of (intrinsic) matter spin in general relativity, the dynamics of a perfect fluid with nonnull spin degrees of freedom is considered. It is shown that, if the matter is composed by effective dust and certain constraints on the initial data are verified, a singularity will not form. Various special cases are discussed, such as Lemaitre-Tolman-Bondi and Bianchi I space-times, where the results are further extended or shown explicitly to be verified.
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页数：22
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