Time domain analysis of superradiant instability for the charged stringy black hole-mirror system

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	Time domain analysis of superradiant instability for the charged stringy black hole-mirror system
	Li, R; Tian, Y; Zhang, HB; Zhao, JK
刊名	PHYSICS LETTERS B
	2015
卷号	750 期号:0 页码:520-527
关键词	Charged black holes in string theory Superradiant instability Time domain analysis
通讯作者	Zhang, HB (reprint author), Beijing Normal Univ, Dept Phys, Beijing 100875, Peoples R China.
英文摘要	It has been proved that the charged stringy black holes are stable under the perturbations of massive charged scalar fields. However, superradiant instability can be generated by adding the mirror-like boundary condition to the composed system of charged stringy black hole and scalar field. The unstable boxed quasinormal modes have been calculated by using both analytical and numerical methods. In this paper, we further provide a time domain analysis by performing a long time evolution of charged scalar field configuration in the background of the charged stringy black hole with the mirror-like boundary condition imposed. We have used the ingoing Eddington-Finkelstein coordinates to derive the evolution equation, and adopted Pseudo-spectral method and the forth-order Runge-Kutta method to evolve the scalar field with the initial Gaussian wave packet. It is shown by our numerical scheme that Fourier transforming the evolution data coincides well with the unstable modes computed from frequency domain analysis. The existence of the rapid growth mode makes the charged stringy black hole a good test ground to study the nonlinear development of superradiant instability. (C) 2015 The Authors. Published by Elsevier B.V.
学科主题	Astronomy & Astrophysics ; Physics
类目[WOS]	Astronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields
关键词[WOS]	MASSIVE SCALAR PERTURBATIONS ; FIELD ; AMPLIFICATION ; EXTRACTION ; STABILITY ; SPACETIME ; ENERGY ; BOMB
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/20791]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Li, R,Tian, Y,Zhang, HB,et al. Time domain analysis of superradiant instability for the charged stringy black hole-mirror system[J]. PHYSICS LETTERS B,2015,750(0):520-527.
APA	Li, R,Tian, Y,Zhang, HB,&Zhao, JK.(2015).Time domain analysis of superradiant instability for the charged stringy black hole-mirror system.PHYSICS LETTERS B,750(0),520-527.
MLA	Li, R,et al."Time domain analysis of superradiant instability for the charged stringy black hole-mirror system".PHYSICS LETTERS B 750.0(2015):520-527.