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Phantom Black Holes in Einstein-Maxwell-Dilaton Theory

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arxiv 0901.4543 v2 pith:XKT44BN7 submitted 2009-01-28 hep-th astro-ph.HEgr-qc

classification hep-thastro-ph.HEgr-qc
keywords blackeinstein-maxwell-dilatonphantomanalysecasescausalclassescorresponding
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We obtain the general static, spherically symmetric solution for the Einstein-Maxwell-dilaton system in four dimensions with a phantom coupling for the dilaton and/or the Maxwell field. This leads to new classes of black hole solutions, with single or multiple horizons. Using the geodesic equations, we analyse the corresponding Penrose diagrams revealing, in some cases, new causal structures.

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  1. Novel electrically charged wormhole, black hole and black bounce exact solutions in hybrid metric-Palatini gravity

    gr-qc 2024-12 conditional novelty 5.0 of 10

    Exact charged solutions in hybrid metric-Palatini gravity with zero scalar potential produce traversable wormholes, double-horizon black holes, black bounces, and infinite-horizon spacetimes.

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