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arXiv · 1406.6820

Revisiting the screening mechanism in $f(R)$ gravity

Jian-hua He·Baojiu Li·Adam J. Hawken·Benjamin R. Granett
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Abstract

We reexamine the screening mechanism in $f(R)$ gravity using N-body simulations. By explicitly examining the relation between the extra scalar field $\delta f_R$ and the gravitational potential $\phi$ in the perturbed Universe, we find that the relation between these two fields plays an important role in understanding the screening mechanism. We show that the screening mechanism in $f(R)$ gravity depends mainly on the depth of the potential well, and find a useful condition for identifying unscreened halos in simulations. We also discuss the potential application of our results to real galaxy surveys.

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Jian-hua He, Baojiu Li, Adam J. Hawken, Benjamin R. Granett. 2014-06-26. Revisiting the screening mechanism in $f(R)$ gravity. https://doi.org/10.1103/physrevd.90.103505

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