Quantum improved charged black holes

We consider quantum effects of gravitational and electromagnetic fields in spherically symmetric black hole spacetimes the asymptotic safety scenario. Introducing both running couplings from renormalization group equations applying a physically sensible scale identification scheme based on Kretschmann scalar, we construct mechanically corrected, or improved Reissner-Nordstrom metric. study global structure geometry show, particular, that central singularity is resolved, being generally replaced with regular Minkowski-core, where curvature tensor vanishes. Exploring cases more general identifications, further find space geometries divided into two regions: one for Minkowski-core other those weak at center. At boundary regions, has either Minkowski-, de Sitter-, anti-de Sitter(AdS)-core.