Dynamics of polar-core spin vortices in a ferromagnetic spin-1 Bose-Einstein condensate

被引：21

作者：

Williamson, Lewis A. ^{[1
]}

Blakie, P. B. ^{[1
]}

机构：

[1] Univ Otago, Dept Phys, Dodd Walls Ctr Photon & Quantum Technol, Dunedin 9016, New Zealand

来源：

PHYSICAL REVIEW A | 2016年 / 94卷 / 06期

关键词：

SPONTANEOUS SYMMETRY-BREAKING; GASES; VORTEX;

D O I：

10.1103/PhysRevA.94.063615

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A ferromagnetic spin-1 condensate supports polar-core spin vortices (PCVs) in the easy plane phase. We derive a model for the dynamics of these PCVs using a variational Lagrangian approach. The PCVs behave as massive charged particles interacting under the two-dimensional Coulomb interaction, with the mass arising from interaction effects within the vortex core. We compare this model to numerical simulations of the spin-1 Gross-Pitaevskii equations and find semiquantitative agreement. In addition, the numerical results suggest that the PCV core couples to spin waves, and this affects the PCV dynamics even far from the core. We identify areas of further research that could extend the model of PCV dynamics presented here.

引用

页数：9

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