Regular Bouncing Solutions, Energy Conditions and the Brans-Dicke Theory

Autor:	Galkina, O., Fabris, J. C., Falciano, F. T., Pinto-Neto, N.
Rok vydání:	2019
Předmět:	General Relativity and Quantum Cosmology Astrophysics - Cosmology and Nongalactic Astrophysics High Energy Physics - Theory
Druh dokumentu:	Working Paper
DOI:	10.1134/S0021364019200013
Popis:	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. Comment: 5 pages, 2 figures, accepted for publication in JETP Letters
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1908.04258 Zobrazit plný text záznamu View this record from Arxiv