Parametric resonance of capillary waves at the interface between two immiscible Bose-Einstein condensates

Autor:	Kobyakov, D., Bychkov, V., Lundh, E., Bezett, A., Marklund, M.
Rok vydání:	2012
Předmět:	Condensed Matter - Quantum Gases Nonlinear Sciences - Pattern Formation and Solitons
Zdroj:	Phys. Rev. A 85, 013630 (2012)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevA.86.023614
Popis:	We 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. Comment: (Version 2) 11 resized figures. One new reference added
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1206.4834 Zobrazit plný text záznamu View this record from Arxiv