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Numerical study of superradiant instability for charged stringy black hole-mirror system

Published 4 Dec 2014 in gr-qc and hep-th | (1412.1527v1)

Abstract: We numerically study the superradiant instability of charged massless scalar field in the background of charged stringy black hole with mirror-like boundary condition. We compare the numerical result with the previous analytical result and show the dependencies of this instability upon various parameters of black hole charge $Q$, scalar field charge $q$, and mirror radius $r_m$. Especially, we have observed that imaginary part of BQN frequencies grows with the scalar field charge $q$ rapidly.

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Authors (2)

  1. Ran Li 
  2. Junkun Zhao 

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