Dipolar condensed atomic mixtures and miscibility under rotation

Lauro Tomio; Ramavarmaraja Kishor Kumar; Arnaldo Gammal

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arXiv · 1911.02734

Dipolar condensed atomic mixtures and miscibility under rotation

Lauro Tomio·Ramavarmaraja Kishor Kumar·Arnaldo Gammal

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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.

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Lauro Tomio, Ramavarmaraja Kishor Kumar, Arnaldo Gammal. 2019-11-07. Dipolar condensed atomic mixtures and miscibility under rotation. https://arxiv.org/abs/1911.02734

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