Non-coaxial vortices in two-component Bose-Einstein condensates: Persistent precession and nutation
Pattern Formation and Solitons
2015-05-18 v1 Quantum Gases
Abstract
It is demonstrated that a two-component Bose-Einstein condensate (BEC) with all-repulsive inter-atomic interactions loaded into a radially symmetric harmonic trap supports robust non-coaxial vortices with approximately orthogonal vortex lines in each of the components. These cross vortices are excited from the linear modes by a sudden switch-on of the nonlinearity (via Feshbach resonance) and are characterized by persistent dynamical regimes of precession with nutation, resembling the motion of a rigid body. The obtained dynamics can be understood qualitatively on the basis of a simple mechanical model.
Cite
@article{arxiv.1505.04113,
title = {Non-coaxial vortices in two-component Bose-Einstein condensates: Persistent precession and nutation},
author = {R. Driben and V. V. Konotop and T. Meier},
journal= {arXiv preprint arXiv:1505.04113},
year = {2015}
}