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

Zhao, G.; Li, B.; Koyama, K.

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.

Citation

Zhao, G., Li, B., & Koyama, K. (2011). N-body simulations for f(R) gravity using a self-adaptive particle-mesh code. Physical Review D, 83(4), Article 044007. https://doi.org/10.1103/physrevd.83.044007

• Journal Article Type: Article
• Publication Date: Feb 2, 2011
• Deposit Date: Jan 20, 2012
• Publicly Available Date: Jul 16, 2014
• Journal: Physical Review D
• Print ISSN: 1550-7998
• Electronic ISSN: 1550-2368
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 83
• Issue: 4
• Article Number: 044007
• DOI: https://doi.org/10.1103/physrevd.83.044007