Brane Cosmological Evolution With Bulk Matter
高能物理 - 理论
2008-11-26 v1 天体物理学
广义相对论与量子宇宙学
高能物理 - 唯象学
摘要
We consider the cosmological evolution of a brane for general bulk matter content. In our setup the bulk pressure and the energy exchange densities are comparable to the brane energy density. Adopting a phenomenological fluid ansatz and generalizations of it, we derive a set of exact solutions of the Friedmann equation that exhibit accelerated expansion. We find that the effective equation of state parameter for the dark energy can exhibit w=-1 crossing without the presence of exotic matter.
引用
@article{arxiv.hep-th/0609100,
title = {Brane Cosmological Evolution With Bulk Matter},
author = {C. Bogdanos and K. Tamvakis},
journal= {arXiv preprint arXiv:hep-th/0609100},
year = {2008}
}
备注
11 Pages