Vortices in quantum droplets of heteronuclear Bose mixtures

Caldara, Matteo; Ancilotto, Francesco

doi:10.1103/physreva.105.063328

Cited by 8 publications

(1 citation statement)

References 59 publications

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“…Theoretical studies of the rotational phenomena in quantum droplets formed by ultracold atoms have already been reported both in the 2D regime [14][15][16][17][18][19][20][21][22][23] and in the 3D regime [24][25][26]. In those studies, emphasis is given to the stability-or lack of stability-of optical vortices.…”

Section: Introductionmentioning

confidence: 99%

Rotational Dynamics Induced by Low-Energy Binary Collisions of Quantum Droplets

2023

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A theoretical analysis of the rotational dynamics induced by off-axis binary collisions of quantum droplets constituted by ultracold atoms is reported. We focus on quantum droplets formed by degenerate dilute Bose gases made from binary mixtures of alkaline atoms under feasible experimental conditions. The stability of the ground state is known to be longer for the chosen heteronuclear gases than for the homonuclear ones. In both cases, we find that the dynamics seem to privilege high similarity of the density of each atomic species. However, the evolution of the phase of the corresponding order parameter differs significantly for heteronuclear admixtures. We evaluate the fidelity as a figure of merit for the overlap between the order parameters of each atomic species. Dynamical evidence of the differences between the phases of the order parameters is predicted to manifest in their corresponding linear and angular momenta. We numerically verify that the total angular and linear momenta are both conserved during the collision. Some direct correlations between the Weber number and the impact parameter with the distribution of the dynamical variables are established.

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