Generalized Chaplygin gas as geometrical dark energy
General Relativity and Quantum Cosmology
2008-11-26 v2
Abstract
The generalized Chaplygin gas provides an interesting candidate for the present accelerated expansion of the universe. We explore a geometrical explanation for the generalized Chaplygin gas within the context of brane world theories where matter fields are confined to the brane by means of the action of a confining potential. We obtain the modified Friedmann equations, deceleration parameter and age of the universe in this scenario and show that they are consistent with the present observational data.
Cite
@article{arxiv.0710.2666,
title = {Generalized Chaplygin gas as geometrical dark energy},
author = {M. Heydari-Fard and H. R. Sepangi},
journal= {arXiv preprint arXiv:0710.2666},
year = {2008}
}
Comments
11 pages, 3 figures, to appear in PRD