Speaker
Description
By considering symmetric and asymmetric dipolar coupled mixtures (with dysprosium, erbium and rubidium isotopes), we reporta study on relevant anisotropic effects, related to spatial separation and miscibility, due to dipole-dipole interactions (DDI) in rotating binary dipolar mixtures Bose-Einstein condensates [1].
The binary mixtures are kept in strong pancake-shaped trap, with repulsive two-body interactions modeled by an effective two-dimensional 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 DDI, being angular for symmetric mixtures and radial for asymmetric ones. Another relevant outcome is the observed mass-imbalance sensibility verified by the vortex-pattern binary distributions in symmetric and asymmetric-dipolar mixtures, which requires the use of a relation for nonhomogeneous mixtures to estimate the miscibility of two components.
References:
[1] R.K. Kumar, L. Tomio and A. Gammal,
Spatial separation of rotating binary Bose-Einstein condensates by tuning the dipolar interactions, Phys. Rev. A {\bf 99}, 043606 (2019); id.,
Vortex patterns in rotating dipolar Bose-Einstein condensate mixtures with squared optical lattices, J. Phys. B 52, 025302 (2018);
R.K. Kumar, L. Tomio, B.A. Malomed and A. Gammal,
Vortex lattices in binary Bose-Einstein condensates with dipole-dipole interactions, Phys. Rev. A {\bf 96}, 063624 (2017).
