The introduction of static and rotating domain-wall cross patterns for a Bose-Einstein condensate (BEC) in a two-dimensional (2D) trap, was studied. With opposite signs of the wave functions in each pair of sectors filled by the same species, the patterns were generated by the intersection of two domain walls (DW) separating immiscible species. Corresponding to the values of physical parameters accessible for both BECs and photonic-crystal fibers (PCF), full stability domains for the quiescent and rotating crosses were identified. The results show that the patterns generated by the intersection of more than two DWs were observed to be unstable, and that they rearrange themselves into the fundamental crosses.
|Physical Review A - Atomic, Molecular, and Optical Physics
|Published - Oct 2004