Intrinsic instability of sonic white holes

TL;DR

This paper demonstrates that sonic white holes in Bose-Einstein condensates inherently possess a discrete spectrum of instabilities, unaffected by high-energy physics analogues, challenging their stability and potential as black hole models.

Contribution

It reveals the intrinsic instability spectrum of sonic white holes, independent of trans-Planckian physics, providing new insights into analogue gravity systems.

Findings

Sonic white holes exhibit a discrete instability spectrum.

Instability spectrum is insensitive to trans-Planckian physics.

Implications for the stability of analogue black hole models.

Abstract

Artificial black holes, such as sonic holes in Bose-Einstein condensates, may give insights into the role of the physics at the event horizon beyond the Planck scale. We show that sonic white holes give rise to a discrete spectrum of instabilities that is insensitive to the analogue of trans-Planckian physics for Bose-Einstein condensates.