Structure formation in the symmetron model

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

doi:10.1088/0004-637x/748/1/61

Structure formation in the symmetron model

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

Authors

A.-C. Davis

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

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.

Citation

Davis, A., Li, B., Mota, D., & Winther, H. (2012). Structure formation in the symmetron model. Astrophysical Journal, 748(1), Article 61. https://doi.org/10.1088/0004-637x/748/1/61

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.