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arXiv 2302.06201gr-qchep-th
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带电 Gauss-Bonnet AdS 黑洞热力学相变的景观拓扑与主导动力学路径

Topology of the landscape and dominant kinetic path for the thermodynamic phase transition of the charged Gauss-Bonnet AdS black holes

Ran Li, Conghua Liu, Kun Zhang, Jin Wang

AI总结:

本文在巨正则系综中构建五维带电 Gauss-Bonnet AdS 黑洞的二维自由能景观,揭示稳定性由盆地深度与势垒决定,并给出相变主导动力学路径及扩散非均匀性导致的机制转变。

摘要:

我们在巨正则系综中研究五维带电 Gauss-Bonnet AdS 黑洞的广义自由能,并将黑洞半径和电荷视为序参量。在二维自由能景观上,盆地中的最低点代表局部稳定黑洞,鞍点代表不稳定黑洞。我们证明黑洞是景观梯度场的拓扑缺陷。黑洞稳定性由自由能景观的地形(以盆地深度和盆地之间的势垒高度表示)决定,而非由梯度场的拓扑决定。此外,我们研究黑洞相变的随机动力学,并在自由能景观上获得相变的主导动力学路径。与一维景观不同,小黑洞态与大黑洞态之间的主导动力学路径不一定经过中间黑洞态。此外,扩散的非均匀性可导致黑洞相变从耦合的协同过程切换为解耦的顺序过程,从而给出不同的动力学机制。

英文摘要:

We study the generalized free energy of the five dimensional charged Gauss-Bonnet AdS black holes in the grand canonical ensemble by treating the black hole radius and the charge as the order parameters. On the two dimensional free energy landscape, the lowest points in the basins represent the local stable black holes and the saddle point represents the unstable black hole. We show that black hole is the topological defect of gradient field of the landscape. The black hole stability is determined by the topography of the free energy landscape in terms of the basin depths and the barrier height between the basins and is not by the topology of the gradient field. In addition, we study the stochastic dynamics of the black hole phase transition and obtain the dominant kinetic path for the transition on the free energy landscape. Unlike the one dimensional landscape, the dominant kinetic path between the small and the large black hole state does not necessarily pass through the intermediate black hole state. Furthermore, the inhomogeneity in diffusions can lead to the switching from the coupled cooperative process of black hole phase transition to the decoupled sequential process, giving different kinetic mechanisms.

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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