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=ϕ0tαexp(βt)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.