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

S. H. Pereira; C. H. G. Bessa; J. A. S. Lima

doi:10.1016/j.physletb.2010.05.027

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arXiv · 0911.0622

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

S. H. Pereira·C. H. G. Bessa·J. A. S. Lima

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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.

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S. H. Pereira, C. H. G. Bessa, J. A. S. Lima. 2009-11-03. Quantized fields and gravitational particle creation in f(R) expanding universes. https://doi.org/10.1016/j.physletb.2010.05.027

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