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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Quantized fields and gravitational particle creation in f (R) expanding universes

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Author(s):
Pereira, S. H. [1] ; Bessa, C. H. G. [2] ; Lima, J. A. S. [2, 3]
Total Authors: 3
Affiliation:
[1] Univ Fed Itajuba, BR-35900373 Itabira, MG - Brazil
[2] Univ Sao Paulo, Dept Astron IAGUSP, BR-05508900 Sao Paulo - Brazil
[3] Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 - USA
Total Affiliations: 3
Document type: Journal article
Source: Physics Letters B; v. 690, n. 2, p. 103-107, JUN 14 2010.
Web of Science Citations: 27
Abstract

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. (AU)

FAPESP's process: 04/13668-0 - Cosmology in the era of precision: dark energy, dark matter and background cosmic radiation
Grantee:Jose Ademir Sales de Lima
Support Opportunities: Research Projects - Thematic Grants