Restoring quasi-reversibility with a single topological charge

TL;DR

This study investigates how a rotating Bose-Einstein condensate's reversibility is affected by interactions and vortices, revealing that a single vortex can quasi-restore reversibility in a high-rotation regime.

Contribution

It demonstrates that a single vortex can restore quasi-reversibility in a rotating Bose-Einstein condensate, highlighting the role of topological charge in reversible dynamics.

Findings

Reversibility is broken by interactions without vortices.

Presence of a single vortex quasi-restores reversibility.

System behavior depends on vortex presence and interaction strength.

Abstract

We numerically study a rotating Bose-Einstein condensate placed transiently over the critical rotation frequency i.e. in a regime where the rotation frequency is larger than the radial frequency of the confinement. We study the reversibility of this process depending on the strength of the interactions and the presence of vortices. We find that the reversibility is broken by the interactions in the absence of vortices but systematically quasi-restored in the presence of a single vortex.