Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/28382
Título: | Geodesics dynamics in the Linet–Tian spacetime with $\Lambda <0$ |
Autor(es): | Brito, Irene Silva, M. F. A. da Mena, Filipe C. Santos, N. O. |
Palavras-chave: | General Relativity Exact solutions Cylindrically symmetric spacetimes Geodesics Stability |
Data: | Mar-2014 |
Editora: | Springer |
Revista: | General relativity and gravitation |
Resumo(s): | We investigate the geodesics' kinematics and dynamics in the Linet-Tian metric with $\Lambda<0$ and compare with the results for the Levi-Civita metric, when $\Lambda=0$. This is used to derive new stability results about the geodesics' dynamics in static vacuum cylindrically symmetric spacetimes with respect to the introduction of $\Lambda<0$. In particular, we find that increasing $|\Lambda|$ always increases the minimum and maximum radial distances to the axis of any spatially confined planar null geodesic. Furthermore, we show that, in some cases, the inclusion of any $\Lambda<0$ breaks the geodesics' orbit confinement of the $\Lambda=0$ metric, for both planar and non-planar null geodesics, which are therefore unstable. Using the full system of geodesics' equations, we provide numerical examples which illustrate our results. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/28382 |
DOI: | 10.1007/s10714-014-1681-7 |
ISSN: | 0001-7701 |
e-ISSN: | 1572-9532 |
Versão da editora: | The original publication is available at: http://link.springer.com/article/10.1007%2Fs10714-014-1681-7 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
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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LTgeode-submit-to-GRG-jan-2014.pdf Acesso restrito! | LTgeodesics | 644,98 kB | Adobe PDF | Ver/Abrir |