Modified GBIG Scenario as an Alternative for Dark Energy
General Relativity and Quantum Cosmology
2009-09-28 v2
Abstract
We construct a DGP-inspired braneworld model where induced gravity on the brane is modified in the spirit of gravity and stringy effects are taken into account by incorporation of the Gauss-Bonnet term in the bulk action. We explore cosmological dynamics of this model and we show that this scenario is a successful alternative for dark energy proposal. Interestingly, it realizes the phantom-like behavior without introduction of any phantom field on the brane and the effective equation of state parameter crosses the cosmological constant line naturally in the same way as observational data suggest.
Keywords
Cite
@article{arxiv.0906.4263,
title = {Modified GBIG Scenario as an Alternative for Dark Energy},
author = {Kourosh Nozari and Narges Rashidi},
journal= {arXiv preprint arXiv:0906.4263},
year = {2009}
}
Comments
16 pages, 6 figures, Accepted for publication in JCAP