Negative Temperature of Inner Horizon and Planck Absolute Entropy of a Kerr-Newman Black Hole

• Published in: Communications in theoretical physics Vol. 53; no. 1; pp. 83 - 86
• Main Author: 刘博 刘文彪
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.01.2010
• Subjects: 普朗克绝对熵; 热力学; 能斯特定理; 负温度; 雅可比方法; 黑洞熵
• ISSN: 0253-6102
• DOI: 10.1088/0253-6102/53/1/19

Considering the contribution of both the outer and inner horizons, the Hamilton-Jacobi method is applied to a Kerr-Newman black hole and a negative temperature of the inner horizon is obtained. Under the negative temperature inside the black hole, the thermodynamics of the two horizons is studied, and the new Bekenstein-Smarr formula is given. The entropies of the inner and outer horizons are all positive. The new entropy expression of the black hole satisfies the Nernst Theorem and can be regarded as the Planck absolute entropy.