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29 March 2024
 
  » arxiv » 1206.4834

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Parametric resonance of capillary waves at the interface between two immiscible Bose-Einstein condensates
D. Kobyakov ; V. Bychkov ; E. Lundh ; A. Bezett ; M. Marklund ;
Date 21 Jun 2012
AbstractWe study parametric resonance of capillary waves on the interface between two immiscible Bose-Einstein condensates pushed towards each other by an oscillating force. Guided by analytical models, we solve numerically the coupled Gross-Pitaevskii equations for two-component Bose-Einstein condensate at zero temperature. We show that, at moderate amplitudes of the driving force, the instability is stabilized due to non-linear modifications of the oscillation frequency. When the amplitude of the driving force is large enough, we observe detachment of droplets from the Bose-Einstein condensates, resulting in generation of quantum vortices (skyrmions). We analytically investigate the vortex dynamics, and conditions of quantized vortex generation.
Source arXiv, 1206.4834
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