Regular Bouncing Solutions, Energy Conditions and the Brans-Dicke Theory
General Relativity and Quantum Cosmology
2019-10-23 v2 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
In general, to avoid a singularity in cosmological models involves the introduction of exotic kind of matter fields, for example, a scalar field with negative energy density. In order to have a bouncing solution in classical General Relativity, violation of the energy conditions is required. In this work, we discuss a case of the bouncing solution in the Brans-Dicke theory with radiative fluid that obeys the energy conditions, and with no ghosts.
Cite
@article{arxiv.1908.04258,
title = {Regular Bouncing Solutions, Energy Conditions and the Brans-Dicke Theory},
author = {O. Galkina and J. C. Fabris and F. T. Falciano and N. Pinto-Neto},
journal= {arXiv preprint arXiv:1908.04258},
year = {2019}
}
Comments
5 pages, 2 figures, accepted for publication in JETP Letters