Stability analysis and Observational Measurement in Chameleonic Generalised Brans--Dicke Cosmology

Details Stability analysis and Observational Measurement in Chameleonic Generalised Brans--Dicke Cosmology Stability analysis and Observational Measurement in Chameleonic Generalised Brans--Dicke Cosmology

2011-09-27

arxiv.org/abs/1109.6358v1

JCAP 07(2011)036

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

15 pages, 18 figures

Scientific paper

10.1088/1475-7516/2011/07/036

We investigate the dynamics of the chameleonic Generalised Brans--Dicke model in flat FRW cosmology. In a new approach, a framework to study stability and attractor solutions in the phase space is developed for the model by simultaneously best fitting the stability and model parameters with the observational data. The results show that for an accelerating universe the phantom crossing does not occur in the past and near future.

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