Brans-Dicke Scalar Field as a Chameleon
General Relativity and Quantum Cosmology
2008-11-26 v2 Astrophysics
Abstract
In this paper it is shown that in Brans - Dicke theory, if one considers a non-minimal coupling between the matter and the scalar field, it can give rise to a late time accelerated expansion for the universe preceded by a decelerated expansion for very high values of the Brans - Dicke parameter .
Keywords
Cite
@article{arxiv.0803.3936,
title = {Brans-Dicke Scalar Field as a Chameleon},
author = {Sudipta Das and Narayan Banerjee},
journal= {arXiv preprint arXiv:0803.3936},
year = {2008}
}
Comments
10 pages, 8 figures; Contents added, References added; Revised version accepted for publication in Physical Review D