Comments on Brane World Cosmology

Details Comments on Brane World Cosmology Comments on Brane World Cosmology

2000-08-11

arxiv.org/abs/hep-th/0008102v3

Mod.Phys.Lett. A16 (2001) 1157-1169

Physics

High Energy Physics

High Energy Physics - Theory

Updates to match journal version

Scientific paper

10.1142/S0217732301004352

In this paper we consider some constraints on brane-world cosmologies. In the first part we analyze different behaviors for the expansion of our universe by imposing constraints on the speed of sound. In the second part, we study the nature of matter on the brane world by means of the well-known energy conditions. We find that the strong energy condition must be completely violated at late stages of the universe.

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