Revisiting the screening mechanism in f(R) gravity

He, J.; Li, B.; Hawken, A.J.; Granett, B.R.

Abstract

We reexamine the screening mechanism in f(R) gravity using N-body simulations. By explicitly examining the relation between the extrascalar field δfR and the gravitational potential ϕ 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.

Citation

He, J., Li, B., Hawken, A., & Granett, B. (2014). Revisiting the screening mechanism in f(R) gravity. Physical Review D, 90, Article 103505. https://doi.org/10.1103/physrevd.90.103505

• Journal Article Type: Article
• Publication Date: Nov 4, 2014
• Deposit Date: Oct 2, 2014
• Publicly Available Date: Oct 29, 2015
• Journal: Physical Review D
• Print ISSN: 1550-7998
• Electronic ISSN: 1550-2368
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 90
• Article Number: 103505
• DOI: https://doi.org/10.1103/physrevd.90.103505
• Related Public URLs: http://arxiv.org/abs/1406.6820