Perfect fluid brane-world model

Details Perfect fluid brane-world model Perfect fluid brane-world model

2001-11-30

arxiv.org/abs/hep-th/0111291v1

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, LateX2e, 4 figures

Scientific paper

By considering 5--dimensional cosmological models with a bulk filled with a perfect fluid and a cosmological constant, we have found regular instantonic solution which is free from any singularity at the origin of the extra--coordinate and describe 5--dimensional asymptotically anti de Sitter wormhole, when the bulk has a topology $ R \times S^4 $ and is filled with dust and a negative cosmological constant. Compactified brane-world instantons which are built up from such instantonic solution describe either a single brane or a string of branes. Their analytical continuation to the pseudo--Riemannian metric can give rise to either 4-dimensional inflating branes or solutions with the same dynamical behaviour for extra--dimension and branes, in addition to multitemporal solutions. Dust brane-world models with other spatial topologies are also considered.

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