Superresonance effect from a rotating acoustic black hole and Lorentz symmetry breaking

TL;DR

This paper explores how Lorentz symmetry breaking influences superresonance in rotating acoustic black holes, revealing enhanced wave amplification and broader scattering spectra due to Lorentz violation.

Contribution

It demonstrates the impact of Lorentz symmetry breaking on superresonance phenomena in acoustic black holes, extending understanding of wave amplification effects.

Findings

Superresonance can be amplified by Lorentz symmetry breaking.

Lorentz violation widens the spectrum of scattered wave functions.

Energy extraction from acoustic black holes is affected by Lorentz-violating parameters.

Abstract

We investigate the possibility of the acoustic superresonance phenomenon (analog to the superradiance in black hole physics), i.e., the amplification of a sound wave by reflection from the ergoregion of a rotating acoustic black hole with Lorentz symmetry breaking. For rotating black holes the effect of superradiance corresponds to the situation where the incident waves has reflection coefficient greater than one, and energy is extracted from them. For an acoustic Kerr-like black hole its rate of loss of mass is affected by the Lorentz symmetry breaking. We also have shown that for suitable values of the Lorentz violating parameter a wider spectrum of particle wave function can be scattered with increased amplitude by the acoustic black hole.