| Issue |
EPL
Volume 85, Number 3, February 2009
|
|
|---|---|---|
| Article Number | 30007 | |
| Number of page(s) | 5 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/85/30007 | |
| Published online | 13 February 2009 | |
Quantum radiation of general nonstationary black holes
1
Institute of Theoretical Physics, Beijing University of Technology - Beijing 100022, China
2
Department of Physics, New Mexico State University - Las Cruces, NM 88003-8001, USA
3
CCAST (World Laboratory) - P. O. Box 8730, Beijing, 100080, China
Corresponding author: ychuang@bjut.edu.cn
Received:
20
November
2008
Accepted:
15
January
2009
Quantum radiation of general nonstationary black holes is investigated by using the method of generalized tortoise-coordinate transformation (GTT). It is shown in general that the temperature and the shape of the event horizon of this kind of black holes depend on time and angle. Further, we find that the chemical potential in the thermal-radiation spectrum is equal to the highest energy of the negative-energy state of particles in nonthermal radiation for general nonstationary black holes.
PACS: 04.70.Dy – Quantum aspects of black holes, evaporation, thermodynamics
© EPLA, 2009
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