Stability of an attractive bosonic cloud with van der Waals interaction
Stability of an attractive bosonic cloud with van der Waals interaction
We investigate the structure and stability of Bose-Einstein condensate of $^{7}$Li atoms with realistic van der Waals interaction by using the potential harmonic expansion method. Besides the known low-density metastable solution with contact delta function interaction, we find a stable branch at a higher density which corresponds to the formation …