Selfinteracting Brans-Dicke cosmology and quintessence
Jul, 20007 pages
Published in:
- Int.J.Mod.Phys.D 12 (2003) 445-460
e-Print:
- gr-qc/0007079 [gr-qc]
Report number:
- MRI-PHY-P20000532
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Abstract: (arXiv)
Recent cosmological observations reveal that we are living in a flat accelerated expanding universe. In this work we have investigated the nature of the potential compatible with the power law expansion of the universe in a self interacting Brans Dicke cosmology with a perfect fluid background and have analyzed whether this potential supports the accelerated expansion. It is found that positive power law potential is relevant in this scenario and can drive accelerated expansion for negative Brans Dicke coupling parameter . The evolution of the density perturbation is also analyzed in this scenerio and is seen that the model allows growing modes for negative .Note:
- 8pages, 5 figures, PRD style, some changes are made, figures added, reference added. To be published in Int. J. Mod. Phys. D Report-no: MRI-PHY/P20000532
- cosmological model
- Brans-Dicke model
- quintessence
- expansion: acceleration
- density: perturbation
- field equations: solution
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