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arXiv 0805.0635astro-ph
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波动宇宙的热力学性质

Thermodynamical properties of the Undulant Universe

Tian Lan, Tong-Jie Zhang, Bao-Quan Wang

摘要:

最近的观测表明,我们的宇宙是由暗能量加速的,因此研究暗能量的物理性质是非常重要的.波动宇宙是一个暗能量状态方程为$ω(a)=-\cos(b\ln a)$的模型,在这里我们证明了既不存在事件视界,也不存在粒子视界.而视视界作为保持全息特性的边界,是一个很好的全息屏。宇宙在视视界内有一个热平衡,因此满足热力学统一第一定律和广义第二定律。波动宇宙作为一个整体的演化在当前阶段表现得很好。然而,在考虑统一理论时,在物质占优或接近奇点的时代,守恒定律的失效需要更多地考虑波动宇宙的形式。

英文摘要:

Recent observations show that our universe is accelerating by dark energy, so it is important to investigate the thermodynamical properties of it. The Undulant Universe is a model with equation of state $ω(a)=-\cos(b\ln a)$ for dark energy, where we show that there neither the event horizon nor the particle horizon exists. However, as a boundary of keeping thermodynamical properties, the apparent horizon is a good holographic screen. The Universe has a thermal equilibrium inside the apparent horizon, so the Unified First Law and the Generalized Second Law of thermodynamics are satisfied. As a thermodynamical whole, the evolution of the Undulant Universe behaves very well in the current phase. However, when considering the unification theory, the failure of conversation law at the epoch of the matter dominated or near singularity need some more consideration for the form of the Undulant Universe.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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