Which coordinate representations can give correct Hawking temperature of Kerr black hole by tunneling approach |
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Authors: | Chikun Ding and Jiliang Jing |
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Institution: | 1.Institute of Physics and Department of Physics,Hunan Normal University,Changsha, Hunan,People’s Republic of China;2.Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education,Hunan Normal University,Changsha, Hunan,People’s Republic of China |
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Abstract: | Some authors found that, in different coordinates, the tunneling approach gives different Hawking temperature for the Schwarzschild
black hole recently. In this paper, by studying the Hawking radiation of the Kerr black hole arising from the scalar and Dirac
particles, we find that, to obtain the Hawking temperature by using tunneling effect, the coordinate representations for the
stationary Kerr black hole should satisfy two conditions: (a) to keep the Killing vectors x(t)m{{\xi_{(t)}^\mu}} and x(j)m{{\xi_{(\varphi)}^\mu}} invariant; and (b) the radial coordinate transformation is a regular and non-zero function. |
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