Splitting of doubly quantized vortices in dilute Bose-Einstein   condensates
  We investigate the dynamics of doubly charged vortices generated in dilute Bose-Einstein condensates by using the topological phase imprinting technique. We find splitting times of such vortices and show that thermal atoms are responsible for their decay. 
K. Gawryluk, T. Karpiuk, M. Brewczyk, K. Rzazewski