2014/12/04 by Ran Li, Junkun Zhao · 1 citation
Physics and Astronomy · #gr-qc #hep-th
paper · pdf · doi:10.1016/j.physletb.2014.12.007
published as Phys. Lett. B 740(2015)317-321 · 5 pages, 5 figures, accepted by PLB. arXiv admin note: text overlap with arXiv:1403.7279
arxiv created 2014/12/04 · arxiv updated 2015/01/14
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 rm. Especially, we have observed that imaginary part of BQN frequencies grows with the scalar field charge q rapidly.