Mirror effect induced by the dilaton field on the Hawking radiation
- Department of General Education, Kobe City College of Technology, Kobe 651-2194 (Japan)
- Department of Physics, Kwansei Gakuin University, Sanda 669-1337 (Japan)
A ''stringy particle'' action is naturally derived from Kaluza-Klein compactification of a test string action coupled to the dilaton field in a conformally invariant manner. According to the standard procedure, we perform the second quantization of the stringy particle. As an interesting application, we consider evaporation of a near-extremal dilatonic black hole by Hawking radiation via the stringy particles. We show that a mirror surface which reflects them is induced by the dilaton field outside the the horizon when the size of the black hole is comparable to the Planck scale. As a result, the energy flux does not propagate across the surface, and hence the evaporation of the dilatonic black hole stops just before the naked singularity at the extremal state appears even though the surface gravity is non-zero in the extremal limit.
- OSTI ID:
- 20891788
- Journal Information:
- AIP Conference Proceedings, Vol. 861, Issue 1; Conference: Albert Einstein century international conference, Paris (France), 18-22 Jul 2005; Other Information: DOI: 10.1063/1.2399603; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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