Decay of a charged scalar and Dirac fields in the Kerr-Newman-de Sitter background
Decay of a charged scalar and Dirac fields in the Kerr-Newman-de Sitter background
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DOI：
10.1103/physrevd.76.084018
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发表时间：
2007-07
影响因子：
5
通讯作者：
R. Konoplya;A. Zhidenko
中科院分区：
文献类型：
--
作者：
R. Konoplya;A. Zhidenko
我们发现了在旋转带电黑洞背景下带电标量场和狄拉克场的准正态模，用Kerr-Newman-de Sitter解描述。研究了准正则谱与黑洞参数质量M、角动量a、电荷Q以及{λ}项和场电荷Q的关系。特别注意黑洞电荷的近极值极限。特别地，我们发现对于标量场和狄拉克场，当黑洞电荷q小于某个阈值（接近电荷的极值，依赖于黑洞的参数）时，当q<0时，带电扰动衰减更快，而当q<0时，带电扰动衰减更慢。
We find the quasinormal modes of the charged scalar and Dirac fields in the background of the rotating charged black holes, described by the Kerr-Newman-de Sitter solution. The dependence of the quasinormal spectrum upon the black hole parameters mass M, angular momentum a, charge Q, as well as on values of the {lambda}-term and a field charge q is investigated. Special attention is given to the near extremal limit of the black hole charge. In particular, we find that for both scalar and Dirac fields, charged perturbations decay quicker for q>0 and slower for q<0 for values of black holes charge Q less than some threshold value, which is close to the extremal value of charge and depend on parameters of the black holes.