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arXiv · 2011.09266

Transitioning Universe with hybrid scalar field in Bianchi I space-time

Anil Kumar Yadav·A. M. Alshehri·Nafis Ahmad·G. K. Goswami·Mukesh Kumar
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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 $\phi = \phi_{0}\left[t^{\alpha}exp(\beta t)\right]^{\delta}$ with $\phi_{0}$, $\alpha$, $\beta$ and $\delta$ as constants. The values of $\alpha$ and $\beta$ 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 $\omega_{de} > -1$. Hence the Universe behaves like a quintessence model at present epoch. Some physical properties of the Universe are also discussed.

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Anil Kumar Yadav, A. M. Alshehri, Nafis Ahmad, G. K. Goswami, Mukesh Kumar. 2020-11-16. Transitioning Universe with hybrid scalar field in Bianchi I space-time. https://doi.org/10.1016/j.dark.2020.100738

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