论文标题
非粉丝弗里德曼·罗伯逊 - 沃克宇宙中巴罗全息暗能的宇宙进化和热稳定性
Cosmic evolution and thermal stability of Barrow holographic dark energy in nonflat Friedmann-Robertson-Walker Universe
论文作者
论文摘要
我们研究了由无压力的暗物质和巴罗全息暗能量（BHDE）填充的非粉丝弗里德曼 - 罗伯逊 - 沃克宇宙的宇宙演变。后者是一种基于带巴罗熵的全息原理的暗能量模型，而不是标准的贝肯斯坦 - 鹰。通过假设宇宙的明显范围为IR截止，我们探讨了两个宇宙黑暗成分之间相互相互作用的情况。我们分析了各种模型参数的行为，例如BHDE密度参数，状态参数方程，减速参数，混蛋参数和声速的平方。我们还评论了预测的观察性一致性，表明相互作用的模型证明是受Planck+WP+BAO，SNIA+CMB+LSS和Union2 SNIA联合分析的最新实验限制的青睐。最终通过要求宇宙流体的热能和压缩性的积极性来讨论我们框架的热稳定性。
We study the cosmological evolution of a nonflat Friedmann-Robertson-Walker Universe filled by pressureless dark matter and Barrow Holographic Dark Energy (BHDE). The latter is a dark energy model based on the holographic principle with Barrow entropy instead of the standard Bekenstein-Hawking one. By assuming the apparent horizon of the Universe as IR cutoff, we explore both the cases where a mutual interaction between the dark components of the cosmos is absent/present. We analyze the behavior of various model parameters, such as the BHDE density parameter, the equation of state parameter, the deceleration parameter, the jerk parameter and the square of sound speed. We also comment on the observational consistency of our predictions, showing that the interacting model turns out to be favored by recent experimental constraints from Planck+WP+BAO, SNIa+CMB+LSS and Union2 SNIa joint analysis over the non-interacting one. The thermal stability of our framework is finally discussed by demanding the positivity of the heat capacities and compressibilities of the cosmic fluid.
