Split vortices in optically coupled Bose-Einstein condensates
J.J. García-Ripoll, V.M. Pérez-García, F. Sols
Physical Review A, 66, 021602(R) (2002).
MOLAB authors
We study a rotating two-component Bose-Einstein condensate in which an optically induced Josephson coupling allows for population transfer between the two species. In a regime where separation of species is favored, the ground state of the rotating system displays domain walls with velocity fields normal to them. Such a configuration looks like a vortex split into two halves, with atoms circulating around the vortex and changing their internal state as they cross the domain wall.