Late-time evolution of charged gravitational collapse and decay of charged scalar hair. III. Nonlinear analysis

We study the nonlinear gravitational collapse of a charged massless scalar field. We confirm the existence of oscillatory inverse power-law tails along future timelike infinity, future null infinity, and the future outer horizon. The nonlinear dumping exponents are in excellent agreement with the analytically predicted ones. Our results prove the analytic conjecture according to which a charged hair decays slower than a neutral one and also suggest the occurrence of mass inflation along the Cauchy horizon of a dynamically formed charged black hole.