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Black diholes Emparan García de Salazar, Roberto A. Relativitat (Física) Forats negres (Astronomia) Gravitació Relativity (Physics) Black holes (Astronomy) Gravitation We present and analyze exact solutions of the Einstein-Maxwell and Einstein-Maxwell-dilaton equations that describe static pairs of oppositely charged extremal black holes, i.e., black diholes. The holes are suspended in equilibrium in an external magnetic field, or held apart by cosmic strings. We comment as well on the relation of these solutions to brane-antibrane configurations in string and M theory. 2010-05-06T09:25:48Z 2010-05-06T09:25:48Z 2000 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevD.61.104009 Physical Review D, 2000, vol. 61, núm. 10, p. 104009-1-104009-7 http://dx.doi.org/10.1103/PhysRevD.61.104009 (c) The American Physical Society, 2000 info:eu-repo/semantics/openAccess The American Physical Society Articles publicats en revistes (Física de la Matèria Condensada)