中国物理B ›› 2009, Vol. 18 ›› Issue (1): 62-65.doi: 10.1088/1674-1056/18/1/011

• GENERAL • 上一篇    下一篇

Hawking radiation from the dilaton--(anti) de Sitter black hole via covariant anomaly

韩亦文1, 洪云1, 包志清2   

  1. (1)College of Computer Science, Chongqing Technology and Business University, Chongqing 400067, China; (2)Math and Statistics of Chongqing Technology and Business University, Chongqing 400067, China
  • 收稿日期:2008-05-06 修回日期:2008-06-17 出版日期:2009-01-20 发布日期:2009-01-20
  • 基金资助:
    Project supported by the Scientific and Technological Foundation of Chongqing Municipal Education Commission of China (Grant No KJ0707011).

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)   

  1. 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
  • Received:2008-05-06 Revised:2008-06-17 Online:2009-01-20 Published:2009-01-20
  • Supported by:
    Project supported by the Scientific and Technological Foundation of Chongqing Municipal Education Commission of China (Grant No KJ0707011).

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摘要： 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.

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.

Key words: Hawking radiation, covariant anomaly, dilaton--(anti) de Sitter black hole

中图分类号:  (Quantum aspects of black holes, evaporation, thermodynamics)

  • 04.70.Dy
97.60.Lf (Black holes)