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Quantum thermodynamical properties of the slowly changing nonstationary Kerr-Newman black hole

Wang Gang-Zhu Wang Ji-Long

Quantum thermodynamical properties of the slowly changing nonstationary Kerr-Newman black hole

Wang Gang-Zhu, Wang Ji-Long
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  • Abstract views:  2746
  • PDF Downloads:  562
  • Cited By: 0
Publishing process
  • Received Date:  18 July 2003
  • Accepted Date:  13 October 2003
  • Published Online:  05 March 2004

Quantum thermodynamical properties of the slowly changing nonstationary Kerr-Newman black hole

  • 1. 太原理工大学应用物理系,太原 030024

Abstract: Introducing the notion of the local thermal equilibrium,the Hawking effect and the entropy of a nonstationary Kerr-Newman black hole whose metric changes slowly are studied by the method of Damour-Ruffini and the thin film model.First,we obtain the Hawking radiation temperature and the thermal spectrum formula,and show that the Hawking temperature depends on the time and the location on the event horizon,the thermal spectrum is a quasi-black-body's thermal spectrum.Second,we calculate the black hole entropy,which is just the Bekenstein-Hawking entropy with the same geometrical cutoff relationship as in the static and spherical case.The results show that the temperature of the black hole is a local quantity,and the entropy of the nonstationary black hole is also proportional to the horizon area as in the case of stationary black holes.

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