Parametric resonance of a Bose-Einstein condensate in a ring trap with periodically driven interactions
Parametric resonance of a Bose-Einstein condensate in a ring trap with periodically driven interactions
We study the instability of a ring Bose-Einstein condensate under a periodic modulation of interatomic interactions. The condensate exhibits temporal and spatial patterns induced by the parametric resonance, which can be characterized by Bogoliubov quasiparticle excitations in the Floquet basis. As the ring geometry significantly limits the number of excitable …