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Revisiting fifth forces in the Galileon model
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.
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Publication status
- Published
Journal
Journal of Cosmology and Astroparticle PhysicsISSN
14757516External DOI
Issue
8Volume
2010Department affiliated with
- Physics and Astronomy Publications
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Author list in alphabetical order.Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06Usage metrics
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