Hawking radiation from the dilaton--(anti) de Sitter black hole via covariant anomaly
Han Yi-Wen(韩亦文)a), Bao Zhi-Qing(包志清)b), and Hong Yun(洪云)a)
a College of Computer Science, Chongqing Technology and Business University, Chongqing 400067, China; b Math and Statistics of Chongqing Technology and Business University, Chongqing 400067, China
Abstract Adopting the anomaly cancellation method, initiated by Robinson and Wilczek recently, this paper discusses Hawking radiation from the dilaton--(anti) de Sitter black hole. To save the underlying gauge and general covariance, it introduces covariant fluxes of gauge and energy--momentum tensor to cancel the gauge and gravitational anomalies. The result shows that the introduced compensating fluxes are equivalent to those of a 2-dimensional blackbody radiation at Hawking temperature with appropriate chemical potential.
Received: 06 May 2008
Revised: 17 June 2008
Accepted manuscript online:
PACS:
04.70.Dy
(Quantum aspects of black holes, evaporation, thermodynamics)
Fund: Project supported by the Scientific
and Technological Foundation of Chongqing Municipal Education
Commission of China (Grant No KJ0707011).
Cite this article:
Han Yi-Wen(韩亦文), Bao Zhi-Qing(包志清), and Hong Yun(洪云) Hawking radiation from the dilaton--(anti) de Sitter black hole via covariant anomaly 2009 Chin. Phys. B 18 62
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