Brans-Dicke Scalar Field as a Chameleon

Mar, 2008
10 pages
Published in:
  • Phys.Rev.D 78 (2008) 043512
e-Print:

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Abstract: (arXiv)
In this paper it is shown that in Brans - Dicke theory, if one considers a non-minimal coupling between the matter and the scalar field, it can give rise to a late time accelerated expansion for the universe preceded by a decelerated expansion for very high values of the Brans - Dicke parameter ω\omega.
  • 98.80.Jk
  • field theory: scalar
  • coupling: nonminimal
  • expansion: acceleration
  • dark energy
  • Brans-Dicke model
  • chameleon
  • numerical calculations