Causality of the brane universe

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Causal structure of the brane universe with respect to null geodesics in the bulk spacetime is studied. It is pointed out that apparent causality violation is possible for the brane universe which contains matter energy. It is also shown that there is no 'horizon problem' in the Friedmann-Robertson-Walker brane universe.
LaTeX, 9 pages, 4 EPS figures to appear in Phys. Rev. Lett

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General Relativity and Quantum Cosmology, High Energy Physics - Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/178576

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/gr-qc/0007070
 http://arxiv.org/abs/gr-qc/0007070
 Phys.Rev.Lett.86:381-384,2001
 doi:10.1103/PhysRevLett.86.381

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