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Structure formation in the symmetron model

Davis, A.-C.; Li, B.; Mota, D.F.; Winther, H.A.

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Authors

A.-C. Davis

D.F. Mota

H.A. Winther



Abstract

Scalar fields, strongly coupled to matter, can be present in nature and still be invisible to local experiments if they are subject to a screening mechanism. The symmetron is one such mechanism that relies on restoration of a spontaneously broken symmetry in regions of high density to shield the scalar fifth force. We have investigated structure formation in the symmetron model by using N-body simulations and find observable signatures in both the linear and nonlinear matter power spectrum and on the halo mass function. The mechanism for suppressing the scalar fifth force in high-density regions is also found to work very well.

Journal Article Type Article
Publication Date Mar 20, 2012
Deposit Date Jan 20, 2012
Publicly Available Date May 2, 2014
Journal Astrophysical Journal
Print ISSN 0004-637X
Electronic ISSN 1538-4357
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 748
Issue 1
Article Number 61
DOI https://doi.org/10.1088/0004-637x/748/1/61
Keywords Cosmology: miscellaneous, Cosmology: theory, Large-scale structure of Universe.
Public URL https://durham-repository.worktribe.com/output/1521870

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Copyright Statement
© 2012. The American Astronomical Society. All rights reserved. Printed in the U.S.A.






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