Beyond the Chameleon Mechanism

Details Beyond the Chameleon Mechanism Beyond the Chameleon Mechanism

2008-05-22

arxiv.org/abs/0805.3430v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

To appear in the proceedings of 43rd Rencontres de Moriond on Cosmology, La Thuile, Italy, March 15 - 22, 2008

Scientific paper

As a result of non-linear self-interactions, in chameleon theories where the field couples to matter much more strongly than gravity does, the fifth force between two bodies with thin-shell is independent of their coupling to the field. As a consequence the bounds on the coupling coming from terrestrial tests of gravity, measurements of the Casimir force and those constraints imposed by the physics of compact objects, big-bang nucleosynthesis and measurements of the cosmic microwave background anisotropies can be exponentially relaxed.

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