Direct and reverse precession of a massive vortex in a binary Bose--Einstein condensate
Quantum Gases
2022-06-29 v1 Pattern Formation and Solitons
Abstract
The dynamics of a filled massive vortex is studied numerically and analytically using a two-dimensional model of a two-component Bose--Einstein condensate trapped in a harmonic trap. This condensate exhibits phase separation. In the framework of the coupled Gross--Pitaevskii equations, it is demonstrated that, in a certain range of parameters of the nonlinear interaction, the precession of a sufficiently massive vortex around the center is strongly slowed down and even reverses its direction with a further increase in the mass. An approximate ordinary differential equation is derived that makes it possible to explain this behavior of the system.
Cite
@article{arxiv.2205.14878,
title = {Direct and reverse precession of a massive vortex in a binary Bose--Einstein condensate},
author = {Victor P. Ruban},
journal= {arXiv preprint arXiv:2205.14878},
year = {2022}
}
Comments
6 pages, 4 figures, to appear as [JETP Letters, 2022, Vol. 115, No. 7, pp. 415-421]