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arXiv · 1001.5384

Background cosmological dynamics in $f(R)$ gravity and observational constraints

Amna Ali·Radouane Gannouji·M. Sami·Anjan A. Sen
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Abstract

In this paper, we carry out a study of viable cosmological models in $f(R)$-gravity at the background level. We use observable parameters like $Ω$ and $γ$ to form autonomous system of equations and show that the models under consideration exhibit two different regimes in their time evolution, namely, a phantom phase followed by a quintessence like behavior. We employ statefinder parameters to emphasize a characteristic discriminative signature of these models.

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Amna Ali, Radouane Gannouji, M. Sami, Anjan A. Sen. 2010-02-12. Background cosmological dynamics in $f(R)$ gravity and observational constraints. https://doi.org/10.1103/physrevd.81.104029

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