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Entropy of Vaidya-deSitter Spacetime |
| LI Xiang; ZHAO Zheng |
| Department of Physics, Beijing Normal University,Beijing
100875
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| Cite this article: |
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LI Xiang, ZHAO Zheng 2001 Chin. Phys. Lett. 18 463-465 |
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Abstract As a statistical model of black hole entropy, the brick-wall method based on the thermal equilibrium in a large scale cannot be applied to the cases out of equilibrium, such as the non-static hole or the case with two horizons. However, the leading term of hole entropy called the Bekenstein-Hawking entropy comes from the contribution of the field near the horizon. According to this idea, the entropy of Vaidya-deSitter spacetime is calculated, A difference from the static case is that the result proportional to the area of horizon relies on a time-dependent cutoff. The condition of local equilibrium near the horizon is used as a working postulate.
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| Keywords:
97.60.Lf
04.20.-q
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Published: 01 March 2001
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