Burrage, Clare and Seery, David (2010) Revisiting fifth forces in the Galileon model. Journal of Cosmology and Astroparticle Physics, 2010 (8). ISSN 14757516

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Abstract

A Galileon field is one which obeys a spacetime generalization of the non-relativistic Galilean invariance. Such a field may possess non-canonical kinetic terms, but ghost-free theories with a well-defined Cauchy problem exist, constructed using a finite number of relevant operators. The interactions of this scalar with matter are hidden by the Vainshtein effect, causing the Galileon to become weakly coupled near heavy sources. We revisit estimates of the fifth force mediated by a Galileon field, and show that the parameters of the model are less constrained by experiment that previously supposed.

Item Type:	Article
Additional Information:	Author list in alphabetical order.
Schools and Departments:	School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User:	David Seery
Date Deposited:	06 Feb 2012 20:16
Last Modified:	30 Mar 2012 11:07
URI:	http://sro.sussex.ac.uk/id/eprint/25136

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