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Excursion set theory for modified gravity : correlated steps, mass functions and halo bias.

Lam, T. Y. and Li, B. (2012) 'Excursion set theory for modified gravity : correlated steps, mass functions and halo bias.', Monthly notices of the Royal Astronomical Society., 426 (4). pp. 3260-3270.


We show how correlated steps introduces significant contributions to the modification of the halo mass function in modified gravity models, taking the chameleon models as an example, in the framework of the excursion set approach. This correction applies to both the Lagrangian and Eulerian environments discussed in previous studies. Correlated steps also enhances the modifications arising from the fifth force in the conditional mass function as well as the halo bias. We found that abundance and clustering measurements from different environments can provide strong constraints on the chameleon models.

Item Type:Article
Keywords:Large-scale structure of Universe.
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Publisher statement:This article has been published in the Monthly Notices of the Royal Astronomical Society © 2012 The Authors. Published by Oxford University Press on behalf of The Royal Astronomical Society. All rights reserved.
Date accepted:No date available
Date deposited:02 May 2014
Date of first online publication:November 2012
Date first made open access:No date available

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