Quantized fields and gravitational particle creation in f(R) expanding universes
Cosmology and Nongalactic Astrophysics
2011-07-01 v1 General Relativity and Quantum Cosmology
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.
Keywords
Cite
@article{arxiv.0911.0622,
title = {Quantized fields and gravitational particle creation in f(R) expanding universes},
author = {S. H. Pereira and C. H. G. Bessa and J. A. S. Lima},
journal= {arXiv preprint arXiv:0911.0622},
year = {2011}
}
Comments
14 pages, 2 figures