Stabilizing an attractive Bose-Einstein condensate by driving a surface collective mode
Stabilizing an attractive Bose-Einstein condensate by driving a surface collective mode
Bose-Einstein condensates with attractive interatomic interactions undergo collective collapse beyond a critical number. We show theoretically that if the low-lying collective modes of the condensate are excited, the radial breathing mode further destabilizes the condensate. Remarkably, excitation of the quadrupolar surface mode causes the condensate to become more stable, imparting …