Brans-Dicke宇宙学中Tsallis全息暗能量的注记
Note on Tsallis holographic dark energy in Brans-Dicke cosmology
摘要：
本文研究了在充满暗物质和Tsallis型全息暗能量的宇宙中，Brans-Dicke标量场$(ϕ)$随标度因子$(a)$的幂律变化不能用一般的场方程来验证。然而，对于自由参数$(ω= -\frac{3}{2}\;\; \&\;\; n = -1)$的具体选择，这是不同于它的固定值在Ghaffari等人\textcolor{blue}{[Ghaffari et al. Euro. Phys. J. C \textbf{78}, 706 (2018)]}描述宇宙的各种物理性质的衍生模型，$ϕ$与$a$的幂律变化导致一致的结果。此外，我们注意到在Brans-Dicke引力中Tsallis全息暗能量的能量守恒定律不成立。
英文摘要：
In this comment, we have investigated that the power law variation of Brans-Dicke scalar field $(ϕ)$ 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 $(ω= -\frac{3}{2}\;\; \&\;\; n = -1)$ 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 $ϕ$ 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.
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