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Revisiting the screening mechanism in f(R) gravity

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

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Authors

J. He

A.J. Hawken

B.R. Granett



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.

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
Public URL https://durham-repository.worktribe.com/output/1453358
Related Public URLs http://arxiv.org/abs/1406.6820

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Copyright Statement
Reprinted with permission from the American Physical Society: Physical Review D 90, 103505 © 2014 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.






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