Brane cosmology with a bulk scalar field

Abstract

We consider ``cosmologically symmetric'' (i.e. solutions with homogeneity and isotropy along three spatial dimensions) five-dimensional spacetimes with a scalar field and a three-brane representing our universe. We write Einstein's equations in a conformal gauge, using light-cone coordinates. We obtain explicit solutions: a. assuming proportionality between the scalar field and the logarithm of the (bulk) scale factor; b. assuming separable solutions. We then discuss the cosmology in the brane nduced by these solutions.

24 pages, Latex, no figure

References in corpus (3)

• Cosmological Evolution on Self-Tuned Branes and the Cosmological Constant
• Can we live in a self-tuning universe?
• Curved dilatonic brane worlds

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