Quasinormal modes of charged black holes with corrections from nonlinear electrodynamics
Quasinormal modes of charged black holes with corrections from nonlinear electrodynamics
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DOI：
10.1103/physrevd.105.044006
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发表时间：
2021-11
影响因子：
5
通讯作者：
Kimihiro Nomura;Daisuke Yoshida
中科院分区：
文献类型：
--
作者：
Kimihiro Nomura;Daisuke Yoshida
研究了非线性电动力学中球对称带电黑洞的引力和电磁扰动的准正规模。在线性麦克斯韦电动力学之外，我们考虑了一类由电磁场强度及其任意系数的Hodge对偶所写的高阶修正的拉格朗日量，并且我们用系数参数化了对拟正规频率的修正。证实了由于非线性电动力学的存在，宇称下的准正规模的等谱性通常会被破坏。作为应用，计算了Euler-Heisenberg和Born-Infeld电动力学中准正规频率的修正，阐明了非线性效应对准正规模的振荡周期和阻尼率的影响。
We study quasinormal modes related to gravitational and electromagnetic perturbations of spherically symmetric charged black holes in nonlinear electrodynamics. Beyond the linear Maxwell electrodynamics, we consider a class of Lagrangian with higher-order corrections written by the electromagnetic field strength and its Hodge dual with arbitrary coefficients, and we parametrize the corrections for quasinormal frequencies in terms of the coefficients. It is confirmed that the isospectrality of quasinormal modes under parity is generally violated due to nonlinear electrodynamics. As applications, the corrections for quasinormal frequencies in Euler-Heisenberg and Born-Infeld electrodynamics are calculated, then it is clarified that the nonlinear effects act to lengthen the oscillation period and enhance the damping rate of the quasinormal modes.