An extended excursion set approach to structure formation in chameleon models

Li, B.; Efstathiou, G.

doi:10.1111/j.1365-2966.2011.20404.x

An extended excursion set approach to structure formation in chameleon models

Li, B.; Efstathiou, G.

Authors

Professor Baojiu Li baojiu.li@durham.ac.uk
Professor

G. Efstathiou

Abstract

In attempts to explain dark energy, a number of models have been proposed in which the formation of a large-scale structure depends on the local environment. These models are highly non-linear and difficult to analyse analytically. N-body simulations have therefore been used to study their non-linear evolution. Here we extend excursion set theory to incorporate environmental effects on structure formation. We apply the method to a chameleon model and calculate observables such as the non-linear mass function at various redshifts. The method can be generalized to study other observables and other models of environmentally dependent interactions. The analytic methods described here should be proved to be useful in delineating which models deserve more detailed study with N-body simulations.

Citation

Li, B., & Efstathiou, G. (2012). An extended excursion set approach to structure formation in chameleon models. Monthly Notices of the Royal Astronomical Society, 421(2), 1431-1442. https://doi.org/10.1111/j.1365-2966.2011.20404.x

Journal Article Type	Article
Publication Date	Apr 1, 2012
Deposit Date	Jan 20, 2012
Publicly Available Date	May 2, 2014
Journal	Monthly Notices of the Royal Astronomical Society
Print ISSN	0035-8711
Electronic ISSN	1365-2966
Publisher	Royal Astronomical Society
Peer Reviewed	Peer Reviewed
Volume	421
Issue	2
Pages	1431-1442
DOI	https://doi.org/10.1111/j.1365-2966.2011.20404.x
Keywords	Methods: analytical, Cosmology: theory, Dark energy, Large-scale structure of Universe.

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This article has been accepted for publication in Monthly notices of the Royal Astronomical Society © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS Published by Oxford University Press on behalf of Royal Astronomical Society. All rights reserved.