Scalar self-interactions loosen constraints from fifth force searches
Journal Article
·
· Physical Review. D, Particles Fields
- Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544 (United States)
- Institute for Strings, Cosmology and Astroparticle Physics, Columbia University, New York, New York 10027 (United States)
The mass of a scalar field mediating a fifth force is tightly constrained by experiments. We show, however, that adding a quartic self-interaction for such a scalar makes most tests much less constraining: the nonlinear equation of motion masks the coupling of the scalar to matter through the chameleon mechanism. We discuss consequences for fifth force experiments. In particular, we find that, with quartic coupling of order unity, a gravitational strength interaction with matter is allowed by current constraints. We show that our chameleon scalar field results in experimental signatures that could be detected through modest improvements of current laboratory set-ups.
- OSTI ID:
- 20698002
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 70, Issue 10; Other Information: DOI: 10.1103/PhysRevD.70.104001; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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