Analytic vortex dynamics in an annular Bose-Einstein condensate
| Autor: | Kalle-Antti Suominen, L. A. Toikka |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases ta114 FOS: Physical sciences Mechanics Vorticity 01 natural sciences 010305 fluids & plasmas law.invention Vortex Vortex ring Classical mechanics Quantum Gases (cond-mat.quant-gas) law Vortex stretching Condensed Matter::Superconductivity 0103 physical sciences Compressibility Precession Annulus (firestop) 010306 general physics Condensed Matter - Quantum Gases Bose–Einstein condensate |
| Zdroj: | Physical Review A. 93 |
| ISSN: | 1050-2947 |
| Popis: | We consider analytically the dynamics of an arbitrary number and configuration of vortices in an annular Bose-Einstein condensate obtaining expressions for the free energy and vortex precession rates to logarithmic accuracy. We also obtain lower bounds for the lifetime of a single vortex in the annulus. Our results enable a closed-form analytic treatment of vortex-vortex interactions in the annulus that is exact in the incompressible limit. The incompressible hydrodynamics that is developed here paves the way for more general analytical treatments of vortex dynamics in non-simply connected geometries. 7 pages, 4 figures |
| Databáze: | OpenAIRE |
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