Symmetry breaking Rayleigh-Taylor instability in a two-component Bose-Einstein condensate

TL;DR

This paper investigates how symmetry breaking occurs in the Rayleigh-Taylor instability within a two-component Bose-Einstein condensate, revealing nonlinear pattern formations like mushroom shapes due to parameter changes.

Contribution

It demonstrates the conditions under which rotation symmetry is broken and characterizes the resulting nonlinear interface patterns in the condensate.

Findings

Symmetry breaking occurs when interatomic interaction or trap frequency is altered.

Interface deforms into mushroom-shaped nonlinear patterns.

The study provides insights into instability dynamics in quantum fluids.

Abstract

The interfacial instability and subsequent dynamics in a phase-separated two-component Bose-Einstein condensate with rotation symmetry are studied. When the interatomic interaction or the trap frequency is changed, the Rayleigh-Taylor instability breaks the rotation symmetry of the interface, which is subsequently deformed into nonlinear patterns including mushroom shapes.