Quantum Turbulence in a Trapped Bose-Einstein Condensate
Michikazu Kobayashi, Makoto Tsubota
TL;DR
This paper investigates quantum turbulence in trapped Bose-Einstein condensates by numerical simulation, demonstrating vortex tangling and energy spectra consistent with Kolmogorov turbulence law.
Contribution
It introduces a method to induce and analyze quantum turbulence in BECs using dual-axis rotation, revealing vortex tangling and Kolmogorov-like energy spectra.
Findings
Quantum turbulence with tangled vortices achieved in BECs.
Energy spectrum follows Kolmogorov law.
Vortices are not crystallized but tangled.
Abstract
We study quantum turbulence in trapped Bose-Einstein condensates by numerically solving the Gross-Pitaevskii equation. Combining rotations around two axes, we successfully induce quantum turbulent state in which quantized vortices are not crystallized but tangled. The obtained spectrum of the incompressible kinetic energy is consistent with the Kolmogorov law, the most important statistical law in turbulence.
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