Galileon bounce after ekpyrotic contraction
High Energy Physics - Theory
2015-06-15 v1
Abstract
We consider a simple cosmological model that includes a long ekpyrotic contraction stage and smooth bounce after it. Ekpyrotic behavior is due to a scalar field with a negative exponential potential, whereas the Galileon field produces bounce. We give an analytical picture of how the bounce occurs within the weak gravity regime, and then perform numerical analysis to extend our results to a non-perturbative regime.
Cite
@article{arxiv.1303.1221,
title = {Galileon bounce after ekpyrotic contraction},
author = {M. Osipov and V. Rubakov},
journal= {arXiv preprint arXiv:1303.1221},
year = {2015}
}
Comments
15 pages, 5 pictures