Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/61924
Título: | Static compact objects in Einstein-Cartan theory |
Autor(es): | Luz, Paulo Carloni, Sante |
Palavras-chave: | Einstein-Cartan Singularities Gravitational collapse Intrinsic spin |
Data: | Out-2019 |
Editora: | American Physical Society |
Revista: | Physical Review D |
Resumo(s): | We generalize the Tolman-Oppenheimer-Volkoff equations for space-times endowed with a Weyssenhoff like torsion field in the Einstein-Cartan theory. The new set of structure equations clearly show how the presence of torsion affects the geometry of the space-time. We obtain new exact solutions for compact objects with non-null spin surrounded by vacuum, explore their properties and discuss how these solutions should be smoothly matched to an exterior space-time. We study how spin changes the Buchdahl limit for the maximum compactness of stars. Moreover, under rather generic conditions, we prove that in the context of a Weyssenhoff like torsion, no static, spherically symmetric compact objects supported only by the spin can exist. We also provide some algorithms to generate new solutions. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/61924 |
DOI: | 10.1103/PhysRevD.100.084037 |
ISSN: | 2470-0010 |
e-ISSN: | 2470-0029 |
Versão da editora: | https://journals.aps.org/prd/abstract/10.1103/PhysRevD.100.084037 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CMAT - Artigos em revistas com arbitragem / Papers in peer review journals |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Static_compact_objects_in_Einstein_Cartan_theory.pdf | pre-print_pdf | 852,92 kB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons