Bulk scalar field in DGP braneworld cosmology
General Relativity and Quantum Cosmology
2011-07-19 v1
Abstract
We investigated the effects of bulk scalar field in the braneworld cosmological scenario. The Friedmann equations and acceleration condition in presence of the bulk scalar field for a zero tension brane and cosmological constant are studied. In DGP model the effective Einstein equation on the brane is obtained with bulk scalar field. The rescaled bulk scalar field on the brane in the DGP model behaves as an effective four dimensional field, thus standard type cosmology is recovered. In present study of the DGP model, the late-time accelerating phase of the universe can be explained .
Cite
@article{arxiv.0709.3136,
title = {Bulk scalar field in DGP braneworld cosmology},
author = {Rizwan ul Haq Ansari and P. K. Suresh},
journal= {arXiv preprint arXiv:0709.3136},
year = {2011}
}
Comments
10 pages, to appear in JCAP