De Sitter ground state of scalar-tensor gravity and its fluctuation with dust
General Relativity and Quantum Cosmology
2010-06-22 v1 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
An exact de Sitter solution of scalar-tensor gravity is found, in which the non-minimal coupling scalar is rolling along a non-constant potential. Based on this solution, a dust-filled FRW universe is explored in frame of scalar-tensor gravity. The effective dark energy induced by the sole non-minimal scalar can be quintessence-like, phantom-like, and more significantly, can cross the phantom divide. The rich and varied properties of scalar-tensor gravity even with only one scalar is shown in this article.
Keywords
Cite
@article{arxiv.1006.3979,
title = {De Sitter ground state of scalar-tensor gravity and its fluctuation with dust},
author = {Hongsheng Zhang and Xin-Zhou Li},
journal= {arXiv preprint arXiv:1006.3979},
year = {2010}
}
Comments
9 pages, 9figs