Vortex structures in dilute quantum fluids

  title={Vortex structures in dilute quantum fluids},
  author={Thomas Winiecki and James F. McCann and Charles S. Adams},
– Vortex structures in dilute quantum fluids are studied using the Gross-Pitaevskii equation. The velocity and momentum of multiply quantized vortex rings are determined and their core structures analysed. For flow past a spherical object, we study the encircling and pinned ring solutions, and determine their excitation energies as a function of the flow velocity for both penetrable and impenetrable objects. The ring and laminar flow solutions converge at a critical velocity, which decreases… CONTINUE READING