Dark energy problem: from phantom theory to modified Gauss-Bonnet gravity
High Energy Physics - Theory
2009-09-17 v2 Astrophysics
General Relativity and Quantum Cosmology
Abstract
The solution of dark energy problem in the models without scalars is presented. It is shown that late-time accelerating cosmology may be generated by the ideal fluid with some implicit equation of state. The universe evolution within modified Gauss-Bonnet gravity is considered. It is demonstrated that such gravitational approach may predict the (quintessential, cosmological constant or transient phantom) acceleration of the late-time universe with natural transiton from deceleration to acceleration (or from non-phantom to phantom era in the last case).
Keywords
Cite
@article{arxiv.hep-th/0510183,
title = {Dark energy problem: from phantom theory to modified Gauss-Bonnet gravity},
author = {Shin'ichi Nojiri and Sergei D. Odintsov and O. G. Gorbunova},
journal= {arXiv preprint arXiv:hep-th/0510183},
year = {2009}
}
Comments
LaTeX 8 pages, prepared for the Proceedings of QFEXT'05, minor correctons, references added