摘要
Motivated by an earlier study of Sahoo and Singh[Mod.Phys.Lett.A 17(2002)2409],we investigate the time dependence of the Brans–Dicke parameterω(t)for an expanding Universe in the generalized Brans–Dicke Chameleon cosmology,and obtain an explicit dependence ofω(t)in different expansion phases of the Universe.Also,we discuss how the observed accelerated expansion of the observable Universe can be accommodated in the present formalism.
