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arXiv 1409.7378gr-qc
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特殊$f(R,T)$引力模型的热力学行为

Thermodynamic Behavior of particular $f(R,T)$ Gravity Models

M. Sharif, M. Zubair

摘要:

在非平衡态描述下,研究了$f(R,T)$理论中FRW宇宙视视界的热力学。本文讨论了$f(R,T)$理论的两个特殊模型的热力学定律。热力学第一定律以克劳修斯关系$T_hd\hat{S}_h=δ{Q}$的形式表示,其中$δ{Q}=-d\hat{E}+Wd\mathbb{V}+T_hd_{\jmath}\hat{S}$是穿过视界的能量通量,$d_{\jmath}\hat{S}$是熵产生项。此外,在正温度和吸引引力的约束下,建立了广义热力学第二定律保持不变的条件。我们已经说明了我们的一些具体的模型在这个理论的结果。

英文摘要:

We investigate the thermodynamics at the apparent horizon of the FRW universe in $f(R,T)$ theory under non-equilibrium description. The laws of thermodynamics have been discussed for two particular models of $f(R,T)$ theory. The first law of thermodynamics is expressed in the form of Clausius relation $T_hd\hat{S}_h=δ{Q}$, where $δ{Q}=-d\hat{E}+Wd\mathbb{V}+T_hd_{\jmath}\hat{S}$ is the energy flux across the horizon and $d_{\jmath}\hat{S}$ is the entropy production term. Furthermore, the conditions to preserve the generalized second law of thermodynamics are established with the constraints of positive temperature and attractive gravity. We have illustrated our results for some concrete models in this theory.

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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