论文标题
Tsallis全息暗能模型在分形宇宙学框架中的研究
Study of Tsallis holographic dark energy model in the framework of Fractal cosmology
论文作者
论文摘要
在这项工作中，我们研究了由Tsallis全息暗能量（THDE）组成的分形宇宙的演变，以及通过相互相互作用相互相互作用的无压暗物质的演变。然后，我们通过将哈勃长度视为IR截止量表来重建该模型的相互作用项。我们还研究了从早期以物质主导的时代到晚期加速的宇宙进化过程中不同宇宙学参数的行为。本研究表明，宇宙在最近的过去经历了从减速到加速膨胀阶段的平稳过渡。此外，我们还显示了模型的标准化哈勃参数的演变，并将其与最新的宇宙天文仪数据进行了比较。最后，我们通过使用声速的平方来探索模型对小扰动的稳定性来测试模型的生存能力。
In this work, we study the evolution of a fractal universe composed of Tsallis holographic dark energy (THDE) and a pressureless dark matter that interact with each other through a mutual interaction. We then reconstruct the interaction term of this model by considering the Hubble length as the IR cut-off scale. We also study the behavior of different cosmological parameters during the cosmic evolution from the early matter-dominated era until the late-time acceleration. The present study shows that the universe undergoes a smooth transition from a decelerated to an accelerated phase of expansion in the recent past. Moreover, we also shown the evolution of the normalized Hubble parameter for our model and compared that with the latest cosmic chronometer data. Finally, we test the viability of the model by exploring its stability against small perturbation by using the squared of the sound speed.
