论文标题
与$ Q $改装的DGP Braneworld相互作用的Tsallis全息暗能
Interacting Tsallis holographic dark energy in $q$-modified DGP braneworld
论文作者
论文摘要
We explore the cosmological aspects of interacting Tsallis holographic dark energy (THDE) in a $q$-modified DGP braneworld setup emerging from non-Gaussian statistical mechanics.To this end, three classes of superstatistics, that is, log-normal, inverse $χ^2$ and $χ^2$ superstatistics were incorporated into the model.我们研究了三种超级巨星对不同宇宙学参数的影响，即无量纲的能量密度和THDE的方程式（EOS）以及减速参数和声音的平方速度。结果，我们注意到，源自$χ^2 $超级巨星的宇宙学参数，具有参数$ q> 1 $，代表了与归因于标准DGP模型的偏差。尽管系统参数在所有三种情况下均显示出适当的行为，但该模型无法在整个宇宙历史上实现稳定性。这可能是将哈勃视野设置为红外截止的结果。此外，发现EOS的行为受THDE参数$δ$的值控制。也就是说，对于$Δ> 2 $ thde表现出类似幻影的行为，而对于$Δ<2 $，它显示出一种典型的行为。受优势能量条件的约束，已经施加了$δ$（Δ<2）$的上限。
We explore the cosmological aspects of interacting Tsallis holographic dark energy (THDE) in a $q$-modified DGP braneworld setup emerging from non-Gaussian statistical mechanics.To this end, three classes of superstatistics, that is, log-normal, inverse $χ^2$ and $χ^2$ superstatistics were incorporated into the model. We examined the implication of the three superstatistics on different cosmological parameters, namely, the dimensionless energy density and the equation-of-state (EoS) of THDE, along with the deceleration parameter and the squared speed of sound. As a result, we noted that the cosmological parameters stemming from the $χ^2$ superstatistics, with a parameter $q > 1$, represent the highest deviation from those ascribed to the standard DGP model. While the system parameters show appropriate behavior in all three cases, the model cannot achieve stability throughout the history of the Universe. It is probably the outcome of setting the Hubble horizon as the infrared cutoff. Furthermore, the behavior of EoS was found to be governed by the value of the THDE parameter $δ$. That is to say, for $δ > 2$ THDE exhibits a phantom-like behavior while for $δ < 2$ it displays a quintessence behavior. Constrained by the dominant energy condition, an upper bound on $δ$ $(δ < 2)$ has been imposed.
