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Moduli Fields as Quintessence and the Chameleon

Authors
  • Brax, Philippe
  • Martin, Jerome
Type
Published Article
Publication Date
Dec 19, 2006
Submission Date
Dec 19, 2006
Identifiers
DOI: 10.1016/j.physletb.2007.02.019
Source
arXiv
License
Unknown
External links

Abstract

We consider models where moduli fields are not stabilized and play the role of quintessence. In order to evade gravitational tests, we investigate the possibility that moduli behave as chameleon fields. We find that, for realistic moduli superpotentials, the chameleon effect is not strong enough, implying that moduli quintessence models are gravitationally ruled out. More generally, we state a no-go theorem for quintessence in supergravity whereby models either behave like a pure cosmological constant or violate gravitational tests

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