Dynamic Property of Phase Transition for Non-Linear Charged Anti-de Sitter black holes

TL;DR

This paper explores the thermodynamic phase transition dynamics of charged AdS black holes, revealing a high-/low-potential phase transition and analyzing the transition probabilities and effects of temperature using the Gibbs free energy landscape and Fokker-Planck equation.

Contribution

It introduces a novel analysis of black hole phase transition dynamics via Gibbs free energy landscape and Fokker-Planck equation, highlighting high-/low-potential transitions.

Findings

Existence of high-/low-potential black hole phase transition.

Stable states correspond to wells in the Gibbs free energy landscape.

Transition dynamics are governed by the Fokker-Planck equation and temperature influences transition behavior.

Abstract

Understanding the thermodynamic phase transition of black holes can provide the deep insight into the fundamental properties of black hole gravity to establish the quantum gravity. In this work, we investigate the phase transition and its dynamics for the charged EPYM AdS black hole. Through reconstructing the Maxwell's equal-area law, we find there exists the high-/low-potential black hole (HPBH/LPBL) phase transition, not only the pure large/small one. The Gibbs free energy landscape ($G_L$) is treated as a function of the black hole horizon, which is the order parameter of the phase transition due to the thermal fluctuation. From the view point of $G_L$, the stable HPBH/LPBL states are corresponding to two wells of $G_L$, which have the same depth. The unstable intermediate-potential black hole state corresponds to the local maximum of $G_L$. Then we focus on the probability evolution governed by the Fokker-Planck equation. Through solving the Fokker-Planck equating with different reflection/aborption boundary conditions and initial conditions, the dynamics of switching between the coexistent HPBH and LPBL phases is probed within the first passage time. Furthermore, the effect of temperature on the dynamic property of phase transition is also investigated.