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N-body simulations for f(R) gravity using a self-adaptive particle-mesh code.

Zhao, G. and Li, B. and Koyama, K. (2011) 'N-body simulations for f(R) gravity using a self-adaptive particle-mesh code.', Physical review D., 83 (4). 044007.

Abstract

We perform high-resolution N-body simulations for f(R) gravity based on a self-adaptive particle-mesh code MLAPM. The chameleon mechanism that recovers general relativity on small scales is fully taken into account by self-consistently solving the nonlinear equation for the scalar field. We independently confirm the previous simulation results, including the matter power spectrum, halo mass function, and density profiles, obtained by Oyaizu et al. [Phys. Rev. D 78, 123524 (2008)] and Schmidt et al. [Phys. Rev. D 79, 083518 (2009)], and extend the resolution up to k∼20  h/Mpc for the measurement of the matter power spectrum. Based on our simulation results, we discuss how the chameleon mechanism affects the clustering of dark matter and halos on full nonlinear scales.

Item Type:Article
Full text:(NA) Not Applicable
Download PDF (arXiv version)
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1103/PhysRevD.83.044007
Publisher statement:© 2011 American Physical Society
Date accepted:No date available
Date deposited:No date available
Date of first online publication:February 2011
Date first made open access:No date available

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