Vortex knots on three-dimensional lattices of nonlinear oscillators coupled by space-varying links.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 31499831.
- Also identified by DOI 10.1103/PhysRevE.100.012205.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Quantized vortices in a complex wave field described by a defocusing nonlinear Schrödinger 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.