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arXiv 2008.00495hep-th
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自由能面上Reissner-Nordström反德西特黑洞的热动力学相变

Thermal Dynamic Phase Transition of Reissner-Nordström Anti-de Sitter Black Holes on Free Energy Landscape

Ran Li, Kun Zhang, Jin Wang

摘要:

本文从自由能的角度研究了Reissner-Nordström anti-de Sitter(RNAdS)黑洞的范德华型相变的热力学和动力学.我们表明,三个分支的RNAdS黑洞的热力学稳定性是由底层的自由能景观地形。我们认为大(小)RNAdS黑洞在热涨落的作用下有向小(大)黑洞转换的可能性。这种在热涨落作用下的状态转换过程被看作是一个随机过程,其动力学过程可用概率Fokker-Planck方程描述。通过数值求解带反射边界条件的Fokker-Planck方程,得到了概率演化的时间相关解。我们还研究了描述系统第一次经历随机过程的速度的第一通道过程。详细研究了不同温度下,从小(大)黑洞到大(小)黑洞的首次通过时间的分布和相应的平均首次通过时间及其涨落。我们的结论是,平均第一通过时间和它的波动有关的自由能景观地形通过势垒高度和温度。

英文摘要:

We explore the thermodynamics and the underlying kinetics of the van der Waals type phase transition of Reissner-Nordström anti-de Sitter (RNAdS) black holes based on the free energy landscape. We show that the thermodynamic stabilities of the three branches of the RNAdS black holes are determined by the underlying free energy landscape topography. We suggest that the large (small) RNAdS black hole can have the probability to switch to the small (large) black hole due to the thermal fluctuation. Such a state switching process under the thermal fluctuation is taken as a stochastic process and the associated kinetics can be described by the probabilistic Fokker-Planck equation. We obtained the time dependent solutions for the probabilistic evolution by numerically solving Fokker-Planck equation with the reflecting boundary conditions. We also investigated the first passage process which describes how fast a system undergoes a stochastic process for the first time. The distributions of the first passage time switching from small (large) to large (small) black hole and the corresponding mean first passage time as well as its fluctuations at different temperatures are studied in detail. We conclude that the mean first passage time and its fluctuations are related to the free energy landscape topography through barrier heights and temperatures.

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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