Entropy of Kerr-Newman Black Hole Continuously Goes to Zero when the Hole Changes from Nonextreme Case to Extreme Case

Chin. Phys. Lett.

1999, Vol. 16

Issue (9): 698-670 DOI:

Original Articles

Entropy of Kerr-Newman Black Hole Continuously Goes to Zero when the Hole Changes from Nonextreme Case to Extreme Case

ZHAO Zheng;ZHU Jian-yang;LIU Wen-biao

Department of Physics, Beijing Normal University, Beijing 100875

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ZHAO Zheng, ZHU Jian-yang, LIU Wen-biao 1999 Chin. Phys. Lett. 16 698-670

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Abstract A new formulation of the Bekenstein-Smarr formula of a Kerr-Newman black hole is given. The re-defined black hole entropy continuously goes to zero as the black hole temperature approaches absolute zero, which satisfies the Nernst theorem. Our new result suggests that the Kerr-Newman black hole should be regarded as a composite thermodynamic system composed of two sub-systems, its outer horizon and its inner horizon. There exists a new quantum thermal effect. “Hawking absorption”, near the inner horizon of the black hole.

Keywords: 97.60.Lf 04.20.-q

Published: 01 September 1999

PACS:	97.60.Lf	(Black holes)
	04.20.-q	(Classical general relativity)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1999/V16/I9/0698

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