A method with which one can calculate the entropy of a non-stationary and non-spherically symmetric black hole is suggested. This method is universal to every kind of black holes. By means of thin film model, the entr...A method with which one can calculate the entropy of a non-stationary and non-spherically symmetric black hole is suggested. This method is universal to every kind of black holes. By means of thin film model, the entropy density at every point of the event horizon is calculated first, then the total entropy is obtained through integration.展开更多
We discuss the entropy of the Garfinkle-Horowitz-Strominger dilaton black hole by using the thin film brick-wallmodel,and the entropy obtained is proportional to the horizon area of the black hole confirming the Beken...We discuss the entropy of the Garfinkle-Horowitz-Strominger dilaton black hole by using the thin film brick-wallmodel,and the entropy obtained is proportional to the horizon area of the black hole confirming the Bekenstein-Hawking'sarea-entropy formula.Then,by comparing with the original brick-wall method,we find that the resultobtained by the thin film method is more reasonable avoiding some drawbacks,such as little mass approximation,neglecting logarithm term,and taking the term L^3 as a contribution of the vacuum surrounding the black bole,and thephysical meaning of the entropy is more clearer.展开更多
文摘A method with which one can calculate the entropy of a non-stationary and non-spherically symmetric black hole is suggested. This method is universal to every kind of black holes. By means of thin film model, the entropy density at every point of the event horizon is calculated first, then the total entropy is obtained through integration.
基金Supported by the National Natural Science Foundation of China under Grant No.10573004
文摘We discuss the entropy of the Garfinkle-Horowitz-Strominger dilaton black hole by using the thin film brick-wallmodel,and the entropy obtained is proportional to the horizon area of the black hole confirming the Bekenstein-Hawking'sarea-entropy formula.Then,by comparing with the original brick-wall method,we find that the resultobtained by the thin film method is more reasonable avoiding some drawbacks,such as little mass approximation,neglecting logarithm term,and taking the term L^3 as a contribution of the vacuum surrounding the black bole,and thephysical meaning of the entropy is more clearer.
