Causality of the brane universe

Details Causality of the brane universe Causality of the brane universe

2000-07-26

arxiv.org/abs/gr-qc/0007070v2

Phys.Rev.Lett.86:381-384,2001

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

LaTeX, 9 pages, 4 EPS figures to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.86.381

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.

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