Modulational instability in Bose-Einstein condensates in optical lattices
Modulational instability in Bose-Einstein condensates in optical lattices
A self-consistent theory of a cylindrically shaped Bose-Einstein condensate (BEC) periodically modulated by a laser beam is presented. We show, both analytically and numerically, that modulational instability/stability is the mechanism by which wave functions of soliton type can be generated in a cylindrically shaped BEC subject to a one-dimensional optical …