Schwarzschild-f(R) Black Holes and the Absence of Black Hole Bomb Effect

In this paper, we analytically study the superradiant stability of Schwarzschild-f® black holes under charged massive scalar perturbation. Using an analytic method based on Descartes’ rule of signs, we extend previous methods developed for higher-dimensional Reissner-Nordstrom black holes to the Schwarzschild-f® black hole cases. Our results show that Schwarzschild-f® black holes are superradiantly stable under charged massive scalar perturbation, implying the absence of the black hole bomb effect.