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JOURNALS // Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki // Archive

Pis'ma v Zh. Èksper. Teoret. Fiz., 2019 Volume 110, Issue 8, Pages 515–520 (Mi jetpl6021)

This article is cited in 11 papers

ASTROPHYSICS AND COSMOLOGY

Regular bouncing solutions, energy conditions, and the Brans–Dicke theory

O. Galkinaa, J. C. Fabrisba, F. T. Falcianoc, N. Pinto-Netoc

a Universidade Federal do Espírito Santo, Vitória, ES, 29075-910 Brazil
b National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, 115409 Russia
c CBPF – Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro, 22290-180 Brazil

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.

Received: 15.08.2019
Revised: 20.09.2019
Accepted: 21.09.2019

DOI: 10.1134/S0370274X19200013


 English version:
Journal of Experimental and Theoretical Physics Letters, 2019, 110:8, 523–528

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