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arXiv · 1402.5004

Particle creation in a f(R) theory with cosmological constraints

S. H. Pereira·R. F. L. Holanda
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Abstract

In this paper we study the creation of super-massive real scalar particles in the framework of a $f(R)=R-\beta/R^n$ modified gravity theory, with parameters constrained by observational data. The analysis is restrict to a homogeneous and isotropic flat and radiation dominated universe. We compare the results to the standard Einstein gravity with cosmological constant ($\Lambda CDM$ model), and we show that the total number density of created particles in the $f(R)$ model is very close to the standard case. Another interesting result is that the spectrum of created particles is $\beta$ independent at early times.

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BibTeXRIS

S. H. Pereira, R. F. L. Holanda. 2014-02-20. Particle creation in a f(R) theory with cosmological constraints. https://doi.org/10.1007/s10714-014-1699-x

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