Brane cosmology with a bulk scalar field

Details Brane cosmology with a bulk scalar field Brane cosmology with a bulk scalar field

2001-06-26

arxiv.org/abs/hep-th/0106245v1

Phys.Rev. D64 (2001) 123507

Physics

High Energy Physics

High Energy Physics - Theory

24 pages, Latex, no figure

Scientific paper

10.1103/PhysRevD.64.123507

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.

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