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Gravitational collapse on the brane: a no-go theorem

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We investigate how braneworld gravity affects gravitational collapse and black hole formation by studying Oppenheimer-Snyder-like collapse on a Randall-Sundrum-type brane. Without making any assumptions about the bulk, we prove a no-go theorem: the exterior spacetime on the brane cannot be static, which is in stark contrast with general relativity. We also consider the role of Kaluza-Klein energy density in collapse, using a toy model.

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Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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Gravitational collapse on the brane: a no-go theorem