JETP Letters

, Volume 110, Issue 8, pp 523–528 | Cite as

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

  • O. GalkinaEmail author
  • J. C. FabrisEmail author
  • F. T. FalcianoEmail author
  • N. Pinto-NetoEmail author
Astrophysics and Cosmology


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.


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This work was supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, Brazil), by Fundação de Apoio à Pesquisa e Inovação do Espírito Santo (FAPES, Brazil), and in part by Coordenação de Aperfeiçoamento de Pessoal de Nível Superior-Brasil (CAPES)-Finance Code 001.


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Copyright information

© Pleiades Publishing, Inc. 2019

Authors and Affiliations

  1. 1.Programa de Pós-Graduação em FísicaCCE-Universidade Federal do Espírito SantoVitóriaBrazil
  2. 2.Núcleo Cosmo-ufes & Departamento de FísicaUniversidade Federal do Espírito SantoVitóriaBrazil
  3. 3.National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)MoscowRussia
  4. 4.CBPF - Centro Brasileiro de Pesquisas FísicasRio de JaneiroBrazil

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