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Advances in High Energy Physics
Volume 2014, Article ID 794626, 8 pages
Research Article

Researching on Hawking Effect in a Kerr Space Time via Open Quantum System Approach

1Department of Physics, Hubei University for Nationalities, Enshi Hube 445000, China
2Department of Physics, Institute of Theoretical Physics, Beijing Normal University, Beijing 100875, China

Received 21 January 2014; Accepted 30 January 2014; Published 9 March 2014

Academic Editor: Xiaoxiong Zeng

Copyright © 2014 Xian-Ming Liu and Wen-Biao Liu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3.


It has been proposed that Hawking radiation from a Schwarzschild or a de Sitter spacetime can be understood as the manifestation of thermalization phenomena in the framework of an open quantum system. Through examining the time evolution of a detector interacting with vacuum massless scalar fields, it is found that the detector would spontaneously excite with a probability the same as the thermal radiation at Hawking temperature. Following the proposals, the Hawking effect in a Kerr space time is investigated in the framework of an open quantum systems. It is shown that Hawking effect of the Kerr space time can also be understood as the the manifestation of thermalization phenomena via open quantum system approach. Furthermore, it is found that near horizon local conformal symmetry plays the key role in the quantum effect of the Kerr space time.