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Revisiting the matter power spectra in f(R) gravity

He, J.H.; Li, B.; Jing, Y.

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Authors

J.H. He

Y. Jing



Abstract

In this paper, we study the nonlinear matter power spectrum in a specific family of f(R) models that can reproduce the ΛCDM background expansion history, using high resolution N-body simulations based on the ecosmog code. We measure the matter power spectrum in the range of 0.05h  Mpc−110−3, we find no chameleon screening in dense regions at late times (z<3), which means that those models could be ruled out due to the factor-of-1/3 enhancement to the strength of Newtonian gravity. We also give the best-fit parameters for a generalized parametrized post-Friedman fitting formula, which works well for the models studied here.

Journal Article Type Article
Publication Date Nov 8, 2013
Deposit Date Jun 3, 2013
Publicly Available Date May 8, 2014
Journal Physical Review D
Print ISSN 1550-7998
Electronic ISSN 1550-2368
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 88
Issue 10
Article Number 103507
DOI https://doi.org/10.1103/physrevd.88.103507
Public URL https://durham-repository.worktribe.com/output/1451379
Publisher URL http://prd.aps.org/abstract/PRD/v88/i10/e103507

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Copyright Statement
Reprinted with permission from the American Physical Society: He, J. H. and Li, B. and Jing, Y., Physical review D, 88 (10). p. 103507, 2013. © 2013 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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