Brane cosmology with a bulk scalar field
High Energy Physics - Theory
2009-11-07 v1 Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
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.
Keywords
Cite
@article{arxiv.hep-th/0106245,
title = {Brane cosmology with a bulk scalar field},
author = {David Langlois and Maria Rodriguez-Martinez},
journal= {arXiv preprint arXiv:hep-th/0106245},
year = {2009}
}
Comments
24 pages, Latex, no figure