Dipolar condensed atomic mixtures and miscibility under rotation
Abstract
By considering symmetric and asymmetric dipolar coupled mixtures (with dysprosium and erbium isotopes), we report a study on relevant anisotropic effects, related to spatial separation and miscibility, due to dipole-dipole interactions (DDIs) in rotating binary dipolar Bose-Einstein condensates. The binary mixtures are kept in strong pancake-like traps, with repulsive two-body interactions modeled by an effective two-dimensional (2D) coupled Gross-Pitaevskii equation. The DDI are tuned from repulsive to attractive by varying the dipole polarization angle. A clear spatial separation is verified in the densities for attractive DDIs, being angular for symmetric mixtures and radial for asymmetric ones. Also relevant is the mass-imbalance sensibility observed by the vortex-patterns in symmetric and asymmetric-dipolar mixtures. In an extension of this study, here we show how the rotational properties and spatial separation of these dipolar mixture are affected by a quartic term added to the harmonic trap of one of the components.
Cite
@article{arxiv.1911.02734,
title = {Dipolar condensed atomic mixtures and miscibility under rotation},
author = {Lauro Tomio and Ramavarmaraja Kishor Kumar and Arnaldo Gammal},
journal= {arXiv preprint arXiv:1911.02734},
year = {2019}
}
Comments
13 pages, 4 figures. Contribution to the proceedings for the 24th European Few-Body conference, Surrey, UK, 2019