Coherent Dynamics of Vortex Formation in Trapped Bose-Einstein Condensates
B. M. Caradoc-Davies, R. J. Ballagh, K. Burnett
TL;DR
This paper models the coherent vortex formation dynamics in trapped Bose-Einstein condensates, highlighting a critical stirring speed and proposing an experimental method for vortex state preparation.
Contribution
It introduces a simple quantitative model that accurately describes vortex dynamics and identifies a critical angular speed for vortex formation.
Findings
Vortex cycles occur at specific stirring speeds.
A critical angular speed threshold for vortex creation.
Proposed experimental method for vortex state preparation.
Abstract
Simulations of a rotationally stirred condensate show that a regime of simple behaviour occurs in which a single vortex cycles in and out of the condensate. We present a simple quantitative model of this behaviour, which accurately describes the full vortex dynamics, including a critical angular speed of stirring for vortex formation. A method for experimentally preparing a condensate in a central vortex state is suggested.
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