a class="link" rel="nofollow" href=" This video presents dark solitons in a trapped Bose-Einstein condensate decaying into quantum vortex rings.br br Simulation of condensates with vortices in rotating anisotropic traps, then a 12-vortex array, then condensate containing a soliton in a spherical trap.br br ---br It's Never too Late to Study:br a class="link" rel="nofollow" href=" ---br Notice: This video is copyright by its respectful owners.br The website address on the video does not mean anything.