Gibbons-Maeda黑洞附近中微子场的熵  

Entropy of neutrino fields near Gibbons-Maeda black hole

作　　者：张正贺[1] 梁桂荣[2] 

机构地区：[1]湛江师范学院物理科学与技术学院,广东湛江524048 [2]重庆大学数理学院,重庆400044

出　　处：《大学物理》2008年第3期30-32,36,共4页College Physics

摘　　要：从Gibbons-Maeda(G-M)时空背景下的线元出发,利用WKB近似,由自旋为1/2的中微子场方程求得径向波数pkr,在此基础上利用brick-wall方法计算了G-M黑洞附近中微子场的自由能和熵,并与标量场的熵作了比较,发现中微子场的主项熵是标量场的主项熵的7/8倍.According to the spin in Gibbons-Maeda dilaton, having applied WKB approximation, the r-number wave （pkr） is obtained through the equation of neutrino fields spinned 1/2. Basing on it, using brick -wall method to calculating the free energy and the entropy of neutrino fields that near black hole, and having compared with the entropy of scalar fields, the main entropy of neutrino fields is found 7/8 times as much as the main entropy of scalar fields.

关 键 词：G-M时空 熵 中微子 BRICK-WALL模型 

分 类 号：P145.7[天文地球—天体物理]