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从Kim时空背景下的Klein-Gordon方程出发,利用brick-wall方法计算标量场的自由能和熵.得到标量场的熵不仅与黑洞的外视界面积有关,而且也是内视界面积的函数.所得结论,当取某种近似时,可得到熵只与外视界面积成正比的关系.并且表明,用内外视界位置参量表达的熵,在黑洞辐射温度趋于绝对零度时,黑洞的熵也趋于零,它满足能斯特定理,可视为黑洞的普朗克绝对熵
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关键词:
- brick-wall方法 /
- 黑洞熵 /
- 能斯特定理
We start with Klein-Gordon equation on the background of the Kim-black hole and calculate the free energy and entropy of a scalar field by the-brick-wall method. It is shown that the entropy is not only related to the area of an outer horizon but also is a function of inner horizon's area. Taking some appr oximation, we can obtain that the entropy only is proportional to the area of an outer horizon. Further more, the entropy expressed by location parameter of the outer and inner horizon approaches zero, when the radiation temperature of a black hole approaches zero. This satisfies the Nernst theorem. It can be taken as Planck absolute entropy of a black hole.-
Keywords:
- brick-wall method /
- entropy of black hole /
- Nernst theorem
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