1Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030
2National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012
3Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080
Fermions Entropy of Vaidya-Bonner Black Hole
GAO Chang-Jun1,2;SHEN You-Gen1,2,3
1Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030
2National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012
3Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080
Abstract： Using the membrane model which is based on brick-wall model, the authors calculated the free energy and entropy of the Vaidya-Bonner black hole due to fermions fields. The result shows that the entropy of the Vaidya-Bonner black hole is exactly proportional to the area of its event horizon. The relationship between entropy and event horizon in such non-static case is just the same as that in the static or stationary case.
2001, Vol. 18 
