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Penrose process in Reissner-Nordström-AdS black hole spacetimes: Black hole energy factories and black hole bombs
The Penrose process for the decay of electrically charged particles in a Reissner-Nordstr\"om-anti--de Sitter black hole spacetime is studied. To extract large quantities of energy one needs to mount a recursive Penrose process where particles are confined and can bounce back to suffer ever again a decaying process in the …