Nonsingular Dilaton Cosmology
General Relativity and Quantum Cosmology
2009-10-31 v2 Astrophysics
High Energy Physics - Theory
Abstract
We study spatially homogeneous and isotropic solutions to the equations of motion derived from dilaton gravity, in the presence of a special combination of higher derivative terms in the gravitational action. All solutions are nonsingular. For initial conditions resembling those in the pre-big-bang scenario, there are solutions corresponding to a spatially flat, bouncing Universe originating in a dilaton-dominated contracting phase and emerging as an expanding Friedmann Universe.
Keywords
Cite
@article{arxiv.gr-qc/9806111,
title = {Nonsingular Dilaton Cosmology},
author = {R. Brandenberger and Richard Easther and J. Maia},
journal= {arXiv preprint arXiv:gr-qc/9806111},
year = {2009}
}
Comments
7 pages, uses RevTeX and psfrag, 2 figures (minor typos fixed)