Density Modulations of Bose-Einstein Condensates via Laser-Induced Interactions
Density Modulations of Bose-Einstein Condensates via Laser-Induced Interactions
We show that the dipole-dipole interatomic forces induced by an off-resonant running laser beam can lead to a self-bound pencil-shaped Bose condensate, even if the laser beam is a plane wave. For an appropriate laser intensity the ground state has a quasi-one-dimensional density modulation---a Bose-Einstein ``supersolid.''