Skip to main content

Research Repository

Advanced Search

An extended excursion set approach to structure formation in chameleon models

Li, B.; Efstathiou, G.

An extended excursion set approach to structure formation in chameleon models Thumbnail


Authors

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.

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.
Public URL https://durham-repository.worktribe.com/output/1530709

Files

Published Journal Article (742 Kb)
PDF

Copyright Statement
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.






You might also like



Downloadable Citations