Vortex knots on three-dimensional lattices of nonlinear oscillators coupled by space-varying links

被引：3
|
作者：
Ruban, Victor P. [1 ]
机构：
[1] Landau Inst Theoret Phys RAS, Chernogolovka 142432, Moscow Region, Russia
来源：
PHYSICAL REVIEW E | 2019年 / 100卷 / 01期
关键词：
VORTICES;
D O I：
10.1103/PhysRevE.100.012205
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Quantized vortices in a complex wave field described by a defocusing nonlinear Schrodinger equation with a space-varying dispersion coefficient are studied theoretically and compared to vortices in the Gross-Pitaevskii model with external potential. A discrete variant of the equation is used to demonstrate numerically that vortex knots in three-dimensional arrays of oscillators coupled by specially tuned weak links can exist for as long times as many as tens of typical vortex turnover periods.
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页数：6
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