Cosmology of Dilatonic Brane World

Details Cosmology of Dilatonic Brane World Cosmology of Dilatonic Brane World

2000-12-27

arxiv.org/abs/hep-th/0012246v2

Mod.Phys.Lett. A16 (2001) 937-946

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, LaTeX, references added

Scientific paper

10.1142/S0217732301004169

We study cosmological solutions in the dilatonic brane world models. The effective four-dimensional equations on the brane are analyzed for the models with one positive tension brane and two branes with tensions of opposite signs. Just as in the non-dilatonic brane case, the conventional Friedmann equations of the four-dimensional universe are reproduced to the leading order in matter energy density for the model with one brane and the introduction of a radion potential is required in order to reproduce the Friedmann equations with the correct sign for the model with two branes.

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