| 用新Tortoise坐标变换计算Vaidya黑洞的熵 |
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| 引用本文： | 牛振风,王秀清. 用新Tortoise坐标变换计算Vaidya黑洞的熵[J]. 河北北方学院学报(自然科学版), 2006, 22(3): 13-17 |
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| 作者姓名： | 牛振风 王秀清 |
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| 作者单位： | 河北北方学院物理系,河北,张家口,075000;河北北方学院物理系,河北,张家口,075000 |
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| 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.
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| 关 键 词： | Tortoise坐标变换 黑洞 Hawking温度 截断因子 熵 |
| 文章编号： | 1673-1492(2006)03-0013-04 |
| 收稿时间： | 2006-04-17 |
| 修稿时间： | 2006-04-17 |
Calculatingting the Entropy of the Vaidya Black Hole with the New Tortoise Coordinate Transformation |
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| NIU Zhen-feng,WANG Xiu-qing. Calculatingting the Entropy of the Vaidya Black Hole with the New Tortoise Coordinate Transformation[J]. JournalofHebeiNorthUniversity(NaturalScienceEdition), 2006, 22(3): 13-17 |
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| Authors: | NIU Zhen-feng WANG Xiu-qing |
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| Affiliation: | Department of Physics, Hebei North University, Zhangjiakou, Hebei 075000, China |
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| Abstract: | 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. |
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| Keywords: | tortoise coordinate transformation black hole Hawking temperature cut-off parameter entropy |
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