Note on Tsallis holographic dark energy in Brans-Dicke cosmology

Abstract

In this comment, we have investigated that the power law variation of Brans-Dicke scalar field $(\varphi )$ with scale factor $(a)$ is not validated by field equations in general for the Universe filled with dark matter and Tsallis type holographic dark energy. However, for specific choice of free parameters $(\omega =-\frac{3}{2}\&n=-1)$ which are differ from its values fixed in Ghaffari et al \textcolor{blue}{[Ghaffari et al. Euro. Phys. J. C \textbf{78}, 706 (2018)]} to describe various physical properties of the Universe in derived model, the power law variation of $\varphi$ with $a$ leads to consistent results. Further, we notice that the energy conservation law for Tsallis holographic dark energy in Brans-Dicke gravity does not hold.

4 Pages, Minor revision in EPJC

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• Reexamining RHDE Models in FRW Universe with two IR cut-off with redshift parametrization
• Accelerating Universe with binary mixture of bulk viscous fluid and dark energy