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Absorption Cross Section and Decay Rate of Stationary Axisymmetric Einstein-Maxwell Dilaton Axion Black Hole |
| LIU Chang-Qing |
| Department of Physics and Information Engineering, HunanInstitute of Humanities Science and Technology, Loudi 417000 |
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| Cite this article: |
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LIU Chang-Qing 2010 Chin. Phys. Lett. 27 040401 |
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Abstract The low energy absorption cross section and the decay rate of the stationary Axisymmetric Einstein-Maxwell Dilaton Axion black hole for massless scalar particles is calculated analytically. It is shown that the partial absorption cross section increases as the rotating parameter a and the absolute value of the dilaton D decreases. It is also shown that the partial absorption cross section is not always positive due to superradiance factor ω-mΩ. However, the decay rate of this black hole is always positive.
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| Keywords:
04.70.Dy
11.30.Pb
11.25.-w
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Received: 25 December 2009
Published: 27 March 2010
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| PACS: |
04.70.Dy
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(Quantum aspects of black holes, evaporation, thermodynamics)
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11.30.Pb
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(Supersymmetry)
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11.25.-w
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(Strings and branes)
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