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arXiv · 0912.1445

Characterizing the linear growth rate of cosmological density perturbations in an f(R) model

Tatsuya Narikawa·Kazuhiro Yamamoto
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Abstract

We investigate the linear growth rate of cosmological matter density perturbations of a viable f(R) model both numerically and analytically. We find that the growth rate in the scalar-tensor regime can be characterized by a simple analytic formula. We also investigate a prospect of constraining the Compton wavelength scale of the f(R) model with a future weak lensing survey.

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Tatsuya Narikawa, Kazuhiro Yamamoto. 2009-12-08. Characterizing the linear growth rate of cosmological density perturbations in an f(R) model. https://doi.org/10.1103/physrevd.81.043528 10.1103/physrevd.81.129903

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