Cosmological evolution in R2 gravity

doi:10.1088/1475-7516/2012/02/049

2012-02-29

E. V. Arbuzova *

A. D. Dolgov

L Reverberi

DOI：10.1088/1475-7516/2012/02/049

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摘要

En 中文

The universe evolution during the radiation-dominated epoch in the R-2-extended gravity theory is considered. The equations of motion for R and H are solved analytically and numerically. The particle production rate by the oscillating curvature is calculated in one-loop approximation and the back-reaction of particle production on the evolution of R is taken into account. Possible implications of the model for cosmological creation of non-thermal dark matter is discussed.

Keyword:

modified gravity

physics of the early universe

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期刊

Journal of Cosmology and Astroparticle Physics

IF:

5.9

论文数:

1.3W

被引数:

4.7W

机构

University of Ferrara

学者数:

1.4W

论文数: 1.1W

被引数: 12

dubna state university

学者数:

166

论文数: 99

被引数: 0

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