Instability of Massive Scalar Fields in Kerr-Newman Spacetime

@inproceedings{Furuhashi2004InstabilityOM,
title={Instability of Massive Scalar Fields in Kerr-Newman Spacetime},
author={Furuhashi and Nambu},
year={2004}
}

We investigate the instability of charged massive scalar fields in Kerr-Newman spacetime. Due to the super-radiant effect of the background geometry, the bound state of the scalar field is unstable, and its amplitude grows in time. By solving the Klein-Gordon equation of the scalar field as an eigenvalue problem, we numerically obtain the growth rate of the amplitude of the scalar field. Although the dependence of the scalar field mass and the scalar field charge on this growth rate agrees with… CONTINUE READING