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

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

2009-11-03

arxiv.org/abs/0911.0622v1

Phys.Lett.B690:103-107,2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

14 pages, 2 figures

Scientific paper

10.1016/j.physletb.2010.05.027

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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