Gibbons-Maeda黑洞背景下自旋场的量子熵  

The Quantum Entropy of Spin Fields in Gibbons-Maeda Black Hole Background

作　　者：刘晓莹[1] 任凤竹[2] 

机构地区：[1]湛江师范学院物理系,广东湛江524048 [2]河南大学物理与信息光电子学院,河南开封475001

出　　处：《河南大学学报（自然科学版）》2006年第4期19-23,共5页Journal of Henan University:Natural Science

基　　金：国家自然科学基金资助课题(10375051)

摘　　要：用brick-wall模型研究了Gibbons-Maeda黑洞背景下自旋场的量子熵.结果表明量子熵可分为两部分,即时空几何依赖部分和场的自旋依赖部分.时空几何依赖部分的线性发散项可化为正比于事件视界面积的形式,对数发散项与黑洞本身的性质有关;自旋依赖部分除了与黑洞本身的性质有关外还与与自旋场的自旋有关,不同的自旋场对黑洞熵的影响是不同的.The free energy and entropy of spin fields are calculated via brick-wall model in Gibbons-Maeda black hole background. It is shown that the quantum entropy includes two parts： The fist part is linearly and logarithmically divergent term, where the linearly divergent term can reduce to the form proportional to the event horizon area, the logarithmically divergent term relates to the characteristics of the black hole; the second part is logarithmically divergent term which also depends on the spin of the fields. The different spin fields have the different effect on the entropy.

关 键 词：G—M黑洞 量子熵 自旋 

分 类 号：P145.7[天文地球—天体物理]