Dirac quasinormal modes in spherically symmetric regular black holes
Dirac quasinormal modes in spherically symmetric regular black holes
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DOI：
10.1103/physrevd.88.064001
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发表时间：
2013-08
影响因子：
5
通讯作者：
Jin Li;Hong-Hao Ma;Kai Lin
中科院分区：
文献类型：
--
作者：
Jin Li;Hong-Hao Ma;Kai Lin
利用WKB近似，研究了球对称规则时空中的无质量狄拉克准正规模和大质量狄拉克准正规模。分析了QNM频率与参数(角动量数L、磁单极子电荷β和场质量m)之间的关系，讨论了球对称规则黑洞磁单极子的极值电荷.此外，我们还应用展开方法对量子网格子模型进行了反指数展开，得到了具有良好精度的L和n元的结果。最后，我们改进了传统的有限差分方法，使之适用于大质量狄拉克情形，并说明了大质量狄拉克场的动力学演化。
Using the WKB approximation, massless and massive Dirac quasinormal modes (QNMs) are studied in spherically symmetric regular spacetimes. We analyze the relationships between QNM frequencies and the parameters (angular momentum number $l$, magnetic monopole charge $\beta$ and the mass of the field $m$), and discuss the extreme charge of magnetic monopole $\beta_{e}$ for spherically symmetric regular black holes (BHs). Furthermore, we apply an expansion method to expand QNMs in inverse powers of $L=l+1/2$, and confirm good precision with $l>n$. Finally, we improve traditional finite difference method to be available in massive Dirac case, and illuminate the dynamical evolution of massive Dirac field.