Transitioning Universe with hybrid scalar field in Bianchi I space-time
Abstract
In this paper we investigate a Bianchi type I transitioning Universe in Brans-Dicke theory. To get an explicit solution of the field equations, we assume scalar field as φ = φ0[tαexp(β t)]δ with φ0, α, β and δ as constants. The values of α and β are obtained by probing the proposed model with recent observational Hubble data (OHD) points. The interacting and non-interacting scenarios between dark matter and dark energy of the derived Universe within the framework of Brans-Dicke gravity are investigated. The om(z) analysis of the Universe in derived model shows that the Universe is filled with dynamical dark energy with its equation of state parameter ωde > -1. Hence the Universe behaves like a quintessence model at present epoch. Some physical properties of the Universe are also discussed.