Localization of gravity in brane world cosmologies

Details Localization of gravity in brane world cosmologies Localization of gravity in brane world cosmologies

2002-04-23

arxiv.org/abs/hep-th/0204190v4

Mod.Phys.Lett. A18 (2003) 983-992

Physics

High Energy Physics

High Energy Physics - Theory

Revised version. To appear in Mod. Phys. Lett. A

Scientific paper

10.1142/S0217732303009757

The most remarkable and interesting feature of brane world scenario is the use of bulk's curvature to localize gravity on the brane, albeit with fine tuning of the brane and bulk parameters. For FRW expanding universe on the brane, it is a moving hypersurface in Schwarzschild anti de Sitter bulk spacetime. We show that zero mass gravitons have bound state on the brane for suitable values of brane and bulk parameters. There occur various cases giving rise to different cosmological models, in particular we discuss a model with positive cosmological constant on the brane.

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