Vortex formation in weakly-interacting inhomogeneous Bose condensates
B. Jackson, J. F. McCann, and C. S. Adams
TL;DR
This paper uses 2D Gross-Pitaevskii simulations to study vortex formation in inhomogeneous Bose condensates when an object moves through the fluid, revealing phase-slip and velocity evolution mechanisms.
Contribution
It presents the first detailed simulation of vortex formation in inhomogeneous Bose condensates using time-dependent Gross-Pitaevskii equations.
Findings
Vortex formation occurs during object flow in Bose condensates.
Phase-slip accumulation is key to vortex nucleation.
Fluid velocity evolution explains vortex dynamics.
Abstract
We solve the time-dependent Gross-Pitaevskii in 2-D to simulate the flow of an object through a dilute Bose condensate trapped in a harmonic well. We demonstrate vortex formation and analyze the process in terms of the accumulation of phase-slip and the evolution of the fluid velocity.
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Taxonomy
TopicsCold Atom Physics and Bose-Einstein Condensates · Strong Light-Matter Interactions · Quantum, superfluid, helium dynamics