Utilize este identificador para referenciar este registo: http://hdl.handle.net/1822/38282

TítuloGeodesics dynamics in the Linet–Tian spacetime with Λ > 0
Autor(es)Brito, Irene
Silva, M. F. A. da
Mena, Filipe C.
Santos, N. O.
Palavras-chaveExact solutions
Dynamics and stability
Cylindrical symmetry
EditoraIOP Publishing
RevistaClassical and Quantum Gravity
Resumo(s)We analyse the geodesics' dynamics in cylindrically symmetric vacuum spacetimes with $\Lambda>0$ and compare it to the $\Lambda= 0$ and $\Lambda<0$ cases. When $\Lambda>0$ there are two singularities in the metric which brings new qualitative features to the dynamics. We find that $\Lambda=0$ planar timelike confined geodesics are unstable against the introduction of a sufficiently large $\Lambda$, in the sense that the bounded orbits become unbounded. In turn, any non-planar radially bounded geodesics are stable for any positive $\Lambda$. We construct global non-singular static vacuum spacetimes in cylindrical symmetry with $\Lambda>0$ by matching the Linet-Tian metric with two appropriate sources.
Versão da editorahttp://iopscience.iop.org/article/10.1088/0264-9381/32/18/185015/meta;jsessionid=BF158A1498217A3C5BE0DEA9F4EB6A36.ip-10-40-1-74
Arbitragem científicayes
Aparece nas coleções:CMAT - Artigos com arbitragem/Papers with refereeing

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