Density Dependence of Charge-4 Vortex Splitting in Bose-Einstein Condensates

We studied the axial-direction density dependence of the splitting of a charge-4 vortex created in ^sup 87^Rb Bose-Einstein condensates. Vortices were generated by topological phase imprinting, and the axial density of the condensates was controlled by an optical potential. Linear and triangular arr...

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Published in:Journal of the Physical Society of Japan 2016-05, Vol.85 (5), p.1-1
Main Authors: Shibayama, Hitoshi, Tsukada, Akinori, Yoshihara, Takahisa, Kuwamoto, Takeshi
Format: Article
Language:English
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Bose-Einstein condensates
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Density
Dynamic tests
Dynamics
Fluid flow
Physics
Splitting
Topology
Vortices
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Tsukada, Akinori
Yoshihara, Takahisa
Kuwamoto, Takeshi
description We studied the axial-direction density dependence of the splitting of a charge-4 vortex created in ^sup 87^Rb Bose-Einstein condensates. Vortices were generated by topological phase imprinting, and the axial density of the condensates was controlled by an optical potential. Linear and triangular arrangements of four single-charged vortices that emerged through the charge-4 vortex collapse were observed. The splitting of the charge-4 vortices was suppressed by maintaining the density outside the l = 2 unstable mode regions where linear arrangements were formed. In addition, we studied vortex dynamics in a high density region for which investigations have not been previously performed.
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source American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list)
subjects Bose-Einstein condensates
Collapse
Density
Dynamic tests
Dynamics
Fluid flow
Physics
Splitting
Topology
Vortices
title Density Dependence of Charge-4 Vortex Splitting in Bose-Einstein Condensates
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