Publicação: de Broglie-Proca and Bopp-Podolsky massive photon gases in cosmology
Carregando...
Arquivos
Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Iop Publishing Ltd
Tipo
Artigo
Direito de acesso
Acesso aberto
Resumo
We investigate the influence of massive photons on the evolution of the expanding universe. Two particular models for generalized electrodynamics are considered, namely de BroglieProca and Bopp-Podolsky electrodynamics. We obtain the equation of state (EOS) P = P(epsilon) for each case using dispersion relations derived from both theories. The EOS are inputted into the Friedmann equations of a homogeneous and isotropic space-time to determine the cosmic scale factor a(t). It is shown that the photon non-null mass does not significantly alter the result a alpha t (1/ 2) valid for a massless photon gas; this is true either in de Broglie-Proca's case (where the photon mass m is extremely small) or in Bopp-Podolsky theory (for which m is extremely large). Copyright (C) EPLA, 2017
Descrição
Palavras-chave
Idioma
Inglês
Como citar
Epl. Bristol: Iop Publishing Ltd, v. 118, n. 1, 7 p., 2017.
