Cosmological evolution in exponential gravity
Cosmology and Nongalactic Astrophysics
2010-09-10 v3 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
We explore the cosmological evolution in the exponential gravity (). We summarize various viability conditions and explicitly demonstrate that the late-time cosmic acceleration following the matter-dominated stage can be realized. We also study the equation of state for dark energy and confirm that the crossing of the phantom divide from the phantom phase to the non-phantom (quintessence) one can occur. Furthermore, we illustrate that the cosmological horizon entropy globally increases with time.
Keywords
Cite
@article{arxiv.1005.4574,
title = {Cosmological evolution in exponential gravity},
author = {Kazuharu Bamba and Chao-Qiang Geng and Chung-Chi Lee},
journal= {arXiv preprint arXiv:1005.4574},
year = {2010}
}
Comments
Published version in JCAP