Holographic Derivation of Kerr-Newman Scattering Amplitudes for General Charge and Spin

TL;DR

This paper derives scattering amplitudes for particles near Kerr-Newman black holes using holographic methods, providing evidence for a Kerr-Newman/CFT correspondence by matching classical results.

Contribution

It introduces a holographic approach to compute Kerr-Newman black hole scattering amplitudes, extending the Kerr/CFT correspondence to charged and spinning black holes.

Findings

Results match classical spacetime calculations from the 1970s.

Provides evidence supporting the Kerr-Newman/CFT correspondence.

Calculations include scalars, fermions, photons, and gravitons.

Abstract

Near-superradiant scattering of charged scalars and fermions by a near-extreme Kerr-Newman black hole and photons and gravitons by a near-extreme Kerr black hole are computed as certain Fourier transforms of correlators in a two-dimensional conformal field theory. The results agree with the classic spacetime calculations from the 1970s, thereby providing good evidence for a conjectured Kerr-Newman/CFT correspondence.