Cosmological scenario based on particle creation and holographic equipartition

Cosmological scenario based on particle creation and holographic equipartition
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基于粒子产生和全息均分的宇宙学场景

DOI:
10.1088/1674-1137/44/6/065103
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发表时间:
2020
期刊:
影响因子:
3.6
通讯作者:
QiHong Huang
QiHong Huang
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
FeiQuan Tu;YiXin Chen;QiHong Huang

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我们提出了一个宇宙学的方案,描述了粒子创造和全息均分的基础上宇宙的演化。该模型试图在不引入暗能量的情况下,从物理学的角度解决早期宇宙的暴胀和现在宇宙的加速膨胀问题。在整个宇宙的演化过程中,我们假设宇宙不断地创造粒子,并且全息均分总是满足的。此外,我们设定粒子的产生速率在早期宇宙中与成正比,在现在和晚期宇宙中与H成正比,其中H表示哈勃参数。因此,我们得到的解决方案和早期宇宙和解决方案和现在和晚期宇宙,分别,其中和是参数。最后,我们得到并分析了本模型的两个重要的热力学性质。
We propose a cosmological scenario that describes the evolution of the universe based on particle creation and holographic equipartition. The model attempts to solve the inflation of the early universe and the accelerated expansion of the present universe without introducing the dark energy from the thermodynamical perspective. Throughout the evolution of the universe, we assume that the universe consistently creates particles, and that the holographic equipartition is always satisfied. Further, we set the creation rate of particles proportional to in the early universe and to H in the present and late universe, where H depicts the Hubble parameter. Consequently, we obtain the solutions and for the early universe and solutions and for the present and late universe, respectively, where and are the parameters. Finally, we obtain and analyze two important thermodynamic properties for the present model.
DOI: --
发表时间: 2012-06
期刊: arXiv: High Energy Physics - Theory
影响因子: --
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