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arXiv · 1005.1171

Matter power spectrum in f(R) gravity with massive neutrinos

Hayato Motohashi·Alexei A. Starobinsky·Jun'ichi Yokoyama
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Abstract

The effect of massive neutrinos on matter power spectrum is discussed in the context of $f(R)$ gravity. It is shown that the anomalous growth of density fluctuations on small scales due to the scalaron force can be compensated by free streaming of neutrinos. As a result, models which predict observable deviation of the equation-of-state parameter $w_\DE$ from $w_\DE=-1$ can be reconciled with observations of matter clustering if the total neutrino mass is $O(0.5 \eV)$.

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Hayato Motohashi, Alexei A. Starobinsky, Jun'ichi Yokoyama. 2010-10-26. Matter power spectrum in f(R) gravity with massive neutrinos. https://doi.org/10.1143/ptp.124.541

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