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arXiv 1012.5531gr-qc
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热力学定律在充满暗能量的宇宙中的有效性

Validity of Thermodynamical Laws in Dark Energy Filled Universe

Samarpita Bhattacharya, Ujjal Debnath

摘要:

我们已经考虑了宇宙的平坦FRW模型,它只充满了暗能量。在宇宙的视视界和事件视界上研究了热力学第一和第二热力学定律的一般描述。我们假设了三种不同类型的暗能量模型的状态方程。我们已经研究了热力学第一和第二热力学定律对这些暗能量的表观视界和事件视界的有效性。对于这些暗能量模型,人们发现,在视视界上,第一和第二定律总是有效的。在事件视界上,暗能量模型1和模型2的定律被打破。对于模型3,第一定律在事件视界上不能满足,但第二定律在宇宙演化的后期可以满足,因此第二定律在事件视界上的有效性仅取决于参数的取值。

英文摘要:

We have considered the flat FRW model of the universe which is filled with only dark energy. The general descriptions of first and second laws of thermodynamics are investigated on the apparent horizon and event horizon of the universe. We have assumed the equation of state of three different types of dark energy models. We have examined the validity of first and second laws of thermodynamics on apparent and event horizons for these dark energies. For these dark energy models, it has been found that on the apparent horizon, first and second laws are always valid. On the event horizon, the laws are break down for dark energy models 1 and 2. For model 3, first law cannot be satisfied on the event horizon, but second law may be satisfied at the late stage of the evolution of the universe and so the validity of second law on the event horizon depends on the values of the parameters only.

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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