用新Tortoise坐标变换计算Vaidya黑洞的熵  

Calculatingting the Entropy of the Vaidya Black Hole with the New Tortoise Coordinate Transformation

作　　者：牛振风[1] 王秀清[1] 

机构地区：[1]河北北方学院物理系,河北张家口075000

出　　处：《河北北方学院学报（自然科学版）》2006年第3期13-17,共5页Journal of Hebei North University:Natural Science Edition

摘　　要：采用一种新的Tortoise坐标变换,约化视界附近Klein-Gordon方程,得到了黑洞的Hawking温度;并用薄膜模型计算了黑洞熵,得到了熵与视界面积成正比的Bekenstein关系.用这种Tortoise坐标变换,还可以使计算动态黑洞熵时所用的截断因子变得与静态和稳态情况相同.Under a new tortoise coordinate transformation, Hawking temperature of the Vaidya black hole is calculated by reducing the Klein-Gordon equation near the event horizon. Then by means of the thin film model, we obtain Bekenstein entropy, which is proporational to its event horizon with the same cutoff parameter as the static and stationary cases.

关 键 词：TORTOISE坐标变换 黑洞 HAWKING温度 截断因子 熵 

分 类 号：O414.11[理学—理论物理]