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On phase transition behaviors of Kerr–Sen black hole
International Journal of Geometric Methods in Modern Physics ( IF 1.8 ) Pub Date : 2020-08-11 , DOI: 10.1142/s0219887820501698
A. Belhaj 1 , A. El Balali 1 , W. El Hadri 1 , H. El Moumni 2 , M. A. Essebani 3 , M. B. Sedra 3, 4
Affiliation  

We investigate phase transitions and critical behaviors of the Kerr–Sen black hole in four dimensions. Computing the involved thermodynamical quantities including the specific heat and using the Ehrenfest scheme, we show that such a black hole undergoes a second-order phase transition. Adopting a new metric form derived from the Gibss free energy scaled by a conformal factor associated with extremal solutions, we calculate the geothermodynamical scalar curvature recovering similar phase transitions. Then, we obtain the scaling laws and the critical exponents, matching perfectly with mean field theory.

中文翻译:

关于克尔森黑洞的相变行为

我们从四个维度研究 Kerr-Sen 黑洞的相变和临界行为。计算所涉及的热力学量,包括比热并使用 Ehrenfest 方案,我们表明这样的黑洞经历了二级相变。采用由与极值解相关的共形因子缩放的吉布斯自由能派生的新度量形式,我们计算了恢复相似相变的地热动力学标量曲率。然后,我们获得了与平均场理论完美匹配的标度律和临界指数。
更新日期:2020-08-11
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