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New Tortoise Coordinate and Hawking Radiation of Dirac Particles in a Non-stationary Kerr-Newman Black Hole

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Abstract

The Hawking effect of Dirac particles in a non-stationary Kerr-Newman black hole is investigated using an improved Damour-Ruffini method with a new tortoise coordinate transformation. In contrast with the old tortoise coordinate, the new one satisfies the dimensional requirement. It is interesting to note that the Hawking emission spectrum remains a blackbody one with a correction term ξ existing in the Hawking temperature. Compared with the old tortoise coordinate transformation, our results appears more accurate and reliable.

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Acknowledgements

This work is supported by the Foundation of China West Normal University (07B067).

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Correspondence to Xiao-Gang Lan.

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Lan, XG. New Tortoise Coordinate and Hawking Radiation of Dirac Particles in a Non-stationary Kerr-Newman Black Hole. Int J Theor Phys 51, 1195–1203 (2012). https://doi.org/10.1007/s10773-011-0995-4

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  • DOI: https://doi.org/10.1007/s10773-011-0995-4

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