中国物理B ›› 2009, Vol. 18 ›› Issue (11): 4721-4725.doi: 10.1088/1674-1056/18/11/019

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Fermion tunneling of charged particles from a non-static black hole in de Sitter space

李慧玲1, 杨树政2   

  1. (1)College of Physics Science and Technology, Shenyang Normal University, Shenyang 110034, China; (2)Institute of Theoretical Physics, China West Normal University, Nanchong 637002, China
  • 收稿日期:2009-02-12 修回日期:2009-03-05 出版日期:2009-11-20 发布日期:2009-11-20
  • 基金资助:
    Project supported by the National Nature Science Foundation of China (Grant No 10773008).

Fermion tunneling of charged particles from a non-static black hole in de Sitter space

Li Hui-Ling(李慧玲)a)† and Yang Shu-Zheng(杨树政)b)   

  1. a College of Physics Science and Technology, Shenyang Normal University, Shenyang 110034, China; b Institute of Theoretical Physics, China West Normal University, Nanchong 637002, China
  • Received:2009-02-12 Revised:2009-03-05 Online:2009-11-20 Published:2009-11-20
  • Supported by:
    Project supported by the National Nature Science Foundation of China (Grant No 10773008).

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摘要： Introducing a new coordinate system and choosing a set of appropriate matrices γ^μ , this paper attempts to investigate the fermion tunneling of charged particles across the event horizon from the Vaidya--Bonner de Sitter black hole. The result shows that the tunneling rate of the non-static black hole is related not only to the change of Bekenstein--Hawking entropy but also to the integral of the changing horizon, which violates unitary theory and is different from the stationary case.

Abstract: Introducing a new coordinate system and choosing a set of appropriate matrices  $\gamma^\mu$, this paper attempts to investigate the fermion tunneling of charged particles across the event horizon from the Vaidya--Bonner de Sitter black hole. The result shows that the tunneling rate of the non-static black hole is related not only to the change of Bekenstein--Hawking entropy but also to the integral of the changing horizon, which violates unitary theory and is different from the stationary case.

Key words: fermion, tunneling rate, energy conservation, charge conservation