Gravitational collapse involving electric charge in the decoupling limit of the dilatonic Gauss–Bonnet gravity

Abstract The paper discusses gravitational collapse of an electrically charged scalar field in the decoupling limit dilatonic Gauss–Bonnet gravity. emerging spacetimes contained Schwarzschild black holes for sufficiently big fields self-interaction strengths. Dependencies characteristics on and parameters turned out to be similar case hole masses radii as well their time formation terms retarded time. In cases minima were observed, while remaining a maximum existed. electric charge possessed when measured versus coupling constant was strictly decreasing with coupling. times charges decreased, increased strengths dynamical fields. Values energy density, radial pressure, pressure anisotropy collapsing biggest along hypersurface propagation initial peaks. For values constant, increase also observed vicinity central singularity within whole range advanced Non-zero dilaton outside event horizon may indicate hairy hole. local temperature calculated apparent increasing late evolution exhibited extrema areas, where dynamics gravity–matter system observed.