Quantized fields and gravitational particle creation in f (R) expanding universes
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
19/10/2012
19/10/2012
2010
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| Resumo |
The problem of cosmological particle creation for a spatially flat, homogeneous and isotropic universes is discussed in the context of f (R) theories of gravity. Different from cosmological models based on general relativity theory, it is found that a conformal invariant metric does not forbid the creation of massless particles during the early stages (radiation era) of the universe. (C) 2010 Elsevier B.V. All rights reserved. CNPq FAPESP[04/13668-0] CNPq, Brazilian Research Agency[150429/2009-6] |
| Identificador |
PHYSICS LETTERS B, v.690, n.2, p.103-107, 2010 0370-2693 http://producao.usp.br/handle/BDPI/27090 10.1016/j.physletb.2010.05.027 |
| Idioma(s) |
eng |
| Publicador |
ELSEVIER SCIENCE BV |
| Relação |
Physics Letters B |
| Direitos |
restrictedAccess Copyright ELSEVIER SCIENCE BV |
| Palavras-Chave | #Particle creation #f(R) theories #ADIABATIC MATTER CREATION #ISOTROPIC COSMOLOGICAL MODELS #NONCONFORMAL SCALAR FIELD #BULK-VISCOSITY #SITTER SPACE #GRAVITY #VACUUM #ENERGY #THERMODYNAMICS #SINGULARITY #Physics, Multidisciplinary |
| Tipo |
article original article publishedVersion |
