Stability and phase transition of black holes in Einstein-Maxwell-dilaton gravity

IF 2.5 3区 物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS
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引用次数: 0

Abstract

In this research, we study black hole stability and phase transition in Einstein-Maxwell-dilaton (EMD) gravity. A dilaton field is non-minimally related to the Maxwell field in the EMD gravity and is an intriguing alternative for General Relativity. By using the thermodynamic laws of the black holes, temperature, entropy, heat capacity, pressure, critical points and Gibbs free energy of charged static dilaton black holes in EMD gravity were all thoroughly explored and effects of dilaton constant on these quantities are studied and the results are compared with Schwarzschild, Reissner-Nordström, and Gibbons-Maeda-Garfinkle-Horowitz-Strominger (GMGHS) black holes. In other cases, the system has stable and unstable areas. Since the heat capacity is discontinuous, the system experiences a phase transition, and Van der Waals-like phase transitions occur between the small and large black holes. It has been observed that the heat capacity for the GMGHS and Schwarzschild black holes is always negative, making these systems unstable.

爱因斯坦-麦克斯韦-稀拉顿引力中黑洞的稳定性和相变
在这项研究中,我们研究了爱因斯坦-麦克斯韦-稀拉顿(EMD)引力中的黑洞稳定性和相变。在 EMD 引力中,稀释力场与麦克斯韦场是非最小相关的,是广义相对论的一种有趣的替代方案。通过利用黑洞的热力学定律,深入探讨了EMD引力中带电静态稀释黑洞的温度、熵、热容量、压力、临界点和吉布斯自由能,研究了稀释常数对这些量的影响,并将结果与施瓦兹柴尔德、赖斯纳-诺德斯特伦和吉本斯-麦达-加芬克-霍洛维茨-斯特罗姆格(GMGHS)黑洞进行了比较。在其他情况下,系统有稳定区和不稳定区。由于热容量是不连续的,系统会发生相变,在小黑洞和大黑洞之间会发生类似范德华的相变。据观察,GMGHS 和施瓦兹柴尔德黑洞的热容量总是负的,这使得这些系统不稳定。
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来源期刊
Nuclear Physics B
Nuclear Physics B 物理-物理:粒子与场物理
CiteScore
5.50
自引率
7.10%
发文量
302
审稿时长
1 months
期刊介绍: Nuclear Physics B focuses on the domain of high energy physics, quantum field theory, statistical systems, and mathematical physics, and includes four main sections: high energy physics - phenomenology, high energy physics - theory, high energy physics - experiment, and quantum field theory, statistical systems, and mathematical physics. The emphasis is on original research papers (Frontiers Articles or Full Length Articles), but Review Articles are also welcome.
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