The superradiation phenomenon of R-N black holes can be unstable

According to traditional theory, RN black holes are stable even under superradiance conditions. However, if a complete mirror is placed near RN black holes, they may become unstable. Both the theory of inflation and precise astronomical observations indicate that the large-scale properties of the universe are asymptotically non-uniform, which closely approximates the theory of dS spacetime. In my research, the boundary conditions for bosons are influenced by cosmological constants. The conclusion is that the superradiant aperture of RN black holes may be unstable. If Bell's theorem is a more fundamental principle, then when the angular momentum of a black hole vanishes, boundary conditions will emerge for a scalar field interacting with the RN black hole (with the black hole and the scalar field forming a dS-like spacetime), leading to the formation of a potential well.