Embedding hairy black holes in a magnetic universe

Marco Astorino

Embedding hairy black holes in a magnetic universe

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arxiv 1301.6794 v2 pith:YKCBGJFO submitted 2013-01-28 gr-qc hep-thnlin.SI

Embedding hairy black holes in a magnetic universe

Marco Astorino This is my paper

classification gr-qc hep-thnlin.SI

keywords blackfieldhairyholesmagneticscalarsolutionuniverse

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Ernst's solution generating technique is adapted to Einstein-Maxwell theory conformally (and minimally) coupled to a scalar field. This integrable system enjoys a SU(2,1) symmetry which enables one to move, by Kinnersley transformations, though the axisymmetric and stationary solution space, building an infinite tower of physically inequivalent solutions. As a specific application, metrics associated to scalar hairy black holes, such as the ones discovered by Bocharova, Bronnikov, Melnikov and Bekenstein, are embedded in the external magnetic field of the Melvin universe.

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