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Acta Physica Sinica (Overseas Edition), 1999, Vol. 8(2): 109-117    DOI: 10.1088/1004-423X/8/2/004
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ENTROPY IN DEMIANSKI-NEWMAN BLACK HOLE

Wan Lang-hui (万浪辉), Zhu Jian-yang (朱建阳)
Department of Physics, Jiangxi Normal University, Nanchang 330027, China
Abstract  By using the brick-wall model we calculate the free energy and the entropy including the superradiant effect mode of the scalar field in Demianski-Newman black hole. When the radial cut-off factor $\bar{\varepsilon}$ and the angular cut-off factor $\delta$ satisfy a proper relation, the entropy can be written as S=AH/4.
Received:  22 June 1998      Revised:  08 October 1998      Accepted manuscript online: 
PACS:  04.70.-s (Physics of black holes)  
  05.70.Ce (Thermodynamic functions and equations of state)  
  04.60.-m (Quantum gravity)  
Fund: Project supported by the Natural Science Foundation of Jiangxi Province (Grant No.961253), China.

Cite this article: 

Wan Lang-hui (万浪辉), Zhu Jian-yang (朱建阳) ENTROPY IN DEMIANSKI-NEWMAN BLACK HOLE 1999 Acta Physica Sinica (Overseas Edition) 8 109

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