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Black diholes

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arxiv hep-th/9906160 v3 pith:UWGVYBAX submitted 1999-06-21 hep-th gr-qc

Roberto Emparan This is my paper · ORCID
classification hep-thgr-qc
keywords blackdiholesholessolutionsanalyzeapartbrane-antibranecharged
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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.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Newman-Janis Algorithm from Taub-NUT Instantons

    gr-qc 2024-12 conditional novelty 7.0 of 10

    The Kerr metric is shown to be the exact nonlinear superposition of two Taub-NUT instantons of opposite chirality, explaining the Newman-Janis algorithm.

  2. Charged multi-sheet wormhole solutions

    gr-qc 2026-05 unverdicted novelty 6.0 of 10

    Constructs charged multi-sheet wormhole solutions in 4D Einstein-Maxwell-massless phantom scalar gravity via Harrison transformation, demonstrating regular solutions exist beyond the Q_e² + Q_m² < M² bound with throat...

  3. Traversable Asymptotically Flat Wormholes with Short Transit Times

    hep-th 2019-08 conditional novelty 6.0 of 10

    Quantum back-reaction from cosmic-string fluctuations can make a non-extremal charged wormhole traversable for early signals, with transit time d plus logarithmic terms, approaching the minimum allowed in higher dimensions.

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