pith. sign in

arxiv: 1511.02634 · v1 · pith:IMML2R7Jnew · submitted 2015-11-09 · 🌀 gr-qc

Superradiance in static black hole spacetimes

Carolina L. Benone , Lu\'is C. B. Crispino This is my paper
classification 🌀 gr-qc
keywords absorptionblackcrossscalarsectionamplifiedarbitrarybackground
0
0 comments X
read the original abstract

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.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 2 Pith papers

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...

  2. Superradiance -- the 2020 Edition

    gr-qc 2015-01 unverdicted novelty 4.0

    Black-hole superradiance extracts energy via the ergoregion and can trigger instabilities with applications to dark matter, beyond-Standard-Model physics, and laboratory analogs.