用brick-wall方法计算黑洞熵的再讨论

REDISSCUSSION OF BRICK-WALL METHOD

在薄层模型brick wall方法的基础上 ,进一步研究了黑洞熵的计算 ,发现黑洞熵来源于其视界面上每一个面元的贡献 .熵与视界面积成正比 ,不但适用于整个黑洞 ,也适用于黑洞视界的局部 .这一思想不但可以用于计算表面各点温度不同的动态黑洞的熵 ,而且使得人们对黑洞熵与视界面积关系的认识更加深入了一步 .

On the basis of thin film brick wall method, the calculation of black hole entropy is studied deeply. It is found that the entropy of a black hole is from every area cell on the event horizon. That the entropy is proportional to its area is right not only on the global black hole, but also on the every cell on the event horizon. The result can be used to calculate the entropy of dynamic black hole whose horizon temperature is different everywhere. Moreover, the relation of entropy and area is recognized more deeply.