Transition to quantum turbulence in a Bose-Einstein condensate through the bending-wave instability of a single-vortex ring

T.-L. Horng, C.-H. Hsueh, S.-C. Gou
2008 Physical Review A. Atomic, Molecular, and Optical Physics  
We investigate the dynamics of an unstable vortex ring in a pancake-shaped Bose-Einsten condensate by solving the Gross-Pitaevskii equation numerically. It is found that a quasisteady turbulent state with long relaxation time can be achieved through the disruption of a perturbed vortex ring in the condensate owing to the bending-wave instability. We verify that this quantum turbulent state is characterized by Kolmogorov energy spcetrum.
doi:10.1103/physreva.77.063625 fatcat:kn5le7gxlncn5cfcv5upt4sqiq