Particle Production in the Interiors of Acoustic Black Holes

TL;DR

This paper investigates phonon creation inside acoustic black hole horizons using toy models, revealing a non-thermal spectrum caused by anomalous scattering in the interior, contrasting with exterior behavior.

Contribution

It demonstrates that phonon spectra inside acoustic black holes are non-thermal due to interior scattering effects, a novel insight into acoustic black hole physics.

Findings

Interior phonon spectrum is non-thermal

Anomalous scattering occurs inside horizons

Contrasts with exterior thermal spectra

Abstract

Phonon creation inside the horizons of acoustic black holes is investigated using two simple toy models. It is shown that, unlike what occurs in the exterior regions, the spectrum is not thermal. This non-thermality is due to the anomalous scattering that occurs in the interior regions.