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arxiv: 1511.02634 · v1 · submitted 2015-11-09 · 🌀 gr-qc

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Superradiance in static black hole spacetimes

Carolina L. Benone , Lu\'is C. B. Crispino
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classification 🌀 gr-qc
keywords absorptionblackcrossscalarsectionamplifiedarbitrarybackground
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We investigate the absorption of a massive and charged scalar field in a Reissner-Nordstr\"om background. We compare our numerical results for the absorption cross section, obtained for arbitrary frequencies, with the low- and high-frequency limits. We find, in particular, that the total absorption cross section can be negative, showing that planar scalar waves can be superradiantly amplified by black holes.

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

  1. Superradiant Suppression of Non-minimally Coupled Scalar fields for a Rotating Charged dS Black Hole in Conformal Weyl Gravity

    hep-th 2026-04 unverdicted novelty 6.0

    Superradiant amplification of charged scalar fields around rotating charged de Sitter black holes is suppressed in conformal Weyl gravity relative to general relativity, with strong exponential suppression for massive...