Journal
PHYSICAL REVIEW D
Volume 90, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.90.103505
Keywords
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Funding
- Italian Space Agency (ASI) [I/023/12/0]
- Royal Astronomical Society
- Durham University
- European Research Council through the Darklight ERC Advanced Research Grant [291521]
- Science and Technology Facilities Council [ST/L00075X/1] Funding Source: researchfish
- STFC [ST/L00075X/1] Funding Source: UKRI
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We reexamine the screening mechanism in f (R) gravity using N-body simulations. By explicitly examining the relation between the extrascalar 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 haloes in simulations. We also discuss the potential application of our results to real galaxy surveys.
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