A method to create disordered vortex arrays in atomic Bose-Einstein condensates

TL;DR

This paper proposes a novel method to generate turbulence in a trapped atomic Bose-Einstein condensate by manipulating the wave function, leading to the creation of disordered vortex arrays, and analyzes their dynamics through simulations.

Contribution

It introduces a new technique involving wave function conjugation to induce turbulence in BECs, which has not been explored before.

Findings

Successful creation of disordered vortex arrays in BECs.

Observation of vortex dynamics via 2D GPE simulations.

Insights into turbulence development in quantum fluids.

Abstract

We suggest a method to create turbulence in a trapped atomic Bose-Einstein condensate (BEC). By replacing in the upper half part of our box the wave function, Psi, with its complex conjugate, Psi^{*}, new negative vortices are introduced into the system. The simulations are performed by solving the two-dimensional Gross-Pitaevskii equation (2D GPE). We study the successive dynamics of the wave function by monitoring the evolution of density and phase profile.