荷电Dilaton-Maxwell动态黑洞中Dirac场的熵

Entropy of Dirac Field in Charged Dynamical Dilaton-Maxwell Black Hole

在Dilaton-Maxwell黑洞中,将4个耦合的Dirac方程简化,作乌龟坐标变换,得到视界面附近处的辐射温度函数.采用薄膜brick-wall模型计算出该黑洞的熵,选择合适的截断因子,得到熵与该黑洞视界面积成正比的结论.

Using the Tortoise coordinate transformation for the coupling Dirac field equations, the Hawking temperature of Dilaton- Maxwell black hole is obtained. Adopting thin film brick-wall model, the entropy of the black hole is calculated by regulating the cutoff parameter. The results show that the entropy of the black hole is in proportion to the area of the event horizon.