Structural change of vortex patterns in anisotropic Bose-Einstein condensates

TL;DR

This paper investigates how increasing anisotropy in a rotating Bose-Einstein condensate causes significant structural changes in vortex patterns, including zig-zag and linear configurations, with implications for many-body system control.

Contribution

It reveals the detailed structural transformations of vortex arrangements in anisotropic traps and links these changes to eigenmode behaviors, advancing understanding of vortex dynamics.

Findings

Vortex patterns transition from symmetric to zig-zag and linear configurations.

Eigenmode behaviors signal structural changes in vortex arrangements.

Structural changes enable potential control of many-body vortex systems.

Abstract

We study the changes in the spatial distribution of vortices in a rotating Bose-Einstein condensate due to an increasing anisotropy of the trapping potential. Once the rotational symmetry is broken, we find that the vortex system undergoes a rich variety of structural changes, including the formation of zig-zag and linear configurations. These spatial re-arrangements are well signaled by the change in the behavior of the vortex-pattern eigenmodes against the anisotropy parameter. The existence of such structural changes opens up possibilities for the coherent exploitation of effective many-body systems based on vortex patterns.