An Interacting model of Dark Energy in Brans-Dicke theory
Feb 18, 201410 pages
Published in:
- Astrophys.Space Sci. 351 (2014) 651-660
- Published: 2014
e-Print:
- 1402.4291 [gr-qc]
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Abstract: (arXiv)
In this paper it is shown that in non-minimally coupled Brans-Dicke theory containing a self-interacting potential, a suitable conformal transformation can automatically give rise to an interaction between the normal matter and the Brans-Dicke scalar field. Considering the scalar field in the Einstein frame as the quintessence matter, it has been shown that such a non-minimal coupling between the matter and the scalar field 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 . We have also studied the observational constraints on the model parameters considering the Hubble and Supernova data.Note:
- 12 pages, 15 figures. Accepted for publication in Astrophysics and Space Science
- Dark energy
- Brans-Dicke scalar field
- Conformal transformation
- field theory: scalar
- transformation: conformal
- expansion: acceleration
- expansion: deceleration
- coupling: nonminimal
- Brans-Dicke model
- quintessence
References(41)
Figures(15)