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Effective dark matter halo catalog in f(R) gravity.

He, J. and Hawken, A. J. and Li, B. and Guzzo, L. (2015) 'Effective dark matter halo catalog in f(R) gravity.', Physical review letters., 115 (7). 071306.


We introduce the idea of an effective dark matter halo catalog in f(R) gravity, which is built using the effective density field. Using a suite of high resolution N-body simulations, we find that the dynamical properties of halos, such as the distribution of density, velocity dispersion, specific angular momentum and spin, in the effective catalog of f(R) gravity closely mimic those in the cold dark matter model with a cosmological constant (ΛCDM). Thus, when using effective halos, an f(R) model can be viewed as a ΛCDM model. This effective catalog therefore provides a convenient way for studying the baryonic physics, the galaxy halo occupation distribution and even semianalytical galaxy formation in f(R) cosmologies.

Item Type:Article
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Publisher statement:Reprinted with permission from the American Physical Society: Physical Review Letters 115, 071306 © 2015 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.
Date accepted:28 July 2015
Date deposited:04 September 2015
Date of first online publication:August 2015
Date first made open access:No date available

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