Vortices in quantum droplets of heteronuclear Bose mixtures
arXiv:2202.02230 · doi:10.1103/PhysRevA.105.063328
Abstract
We have theoretically investigated the structure of spinning self-bound droplets made of K-Rb Bose mixture by solving the Gross-Pitaevskii equation including beyond-mean-field correction in the Lee-Huang-Yang form. The structure and energetics of vortex formation in the self-bound mixture have been elucidated, showing that the formation of linear vortices in the heavier species is energetically favoured over other configurations. A fake (partially filled) core develops as a consequence in the other species, resulting in a hole which might be imaged in experiments. The interplay between vortices and capillary waves, which are the two ways angular momentum can be stored in a swirling superfluid, is studied in detail by computing the relation between angular momentum and rotational frequency. The results show intriguing similarities with the case of a prototypical superfluid, i.e. He droplets when set into rotation. A two-branches curve in the stability diagram, qualitatively similar to the one expected for classical (incompressible and viscous) rotating liquid droplets, is obtained when vortices are present in the droplets, while prolate (i.e. non axi-symmetric) shapes are only permitted in vortex-free droplets.
arXiv comment13 pages, 16 figures (Revised version)
References in corpus (37)
- Quantum Mechanical Stabilization of a Collapsing Bose-Bose Mixture
- Quantum liquid droplets in a mixture of Bose-Einstein condensates
- Self-bound quantum droplets in atomic mixtures
- Quantum-fluctuation-driven crossover from a dilute Bose-Einstein condensate to a macro-droplet in a dipolar quantum fluid
- Observation of a dipolar quantum gas with metastable supersolid properties
- Feshbach resonances in rubidium 87: Precision measurement and analysis
- Observation of Quantum Droplets in a Heteronuclear Bosonic Mixture
- Collisions of self-bound quantum droplets
- Vortex solitons: Old results and new perspectives
- Two-dimensional vortex quantum droplets
- Feshbach resonances in ultracold K(39)
- Three-dimensional droplets of swirling superfluids
- Dilute dipolar quantum droplets beyond the extended Gross-Pitaevskii equation
- Quantum droplets of dipolar mixtures
- Rotating binary Bose-Einstein condensates and vortex clusters in quantum droplets
- Density Functional Theory of doped superfluid liquid helium and nanodroplets
- Vortices in self-bound dipolar droplets
- Metastability of quantum droplet clusters
- Coherent diffractive imaging of single helium nanodroplets with a high harmonic generation source
- Lee-Huang-Yang effects in the ultracold mixture of Na and Rb with attractive interspecies interactions
- Exotic vortex lattices in two-species Bose-Einstein condensates
- Three-Dimensional Shapes of Spinning Helium Nanodroplets
- Self-bound ultra dilute Bose mixtures within Local Density Approximation
- Cavity Optomechanics in a Levitated Helium Drop
- Angular momentum in rotating superfluid droplets
- Spinning superfluid helium-4 nanodroplets
- Vortex arrays in nanoscopic superfluid helium droplets
- The variational approximation for two-dimensional quantum droplets
- Effective expression of the Lee-Huang-Yang energy functional for heteronuclear mixtures
- Splitting of singly and doubly quantized composite vortices in two-component Bose-Einstein condensates
- Breathing mode in two-dimensional binary self-bound Bose gas droplets
- Structured hetero-symmetric quantum droplets
- Ground state and rotational properties of two-dimensional self-bound quantum droplets
- Quantum Monte Carlo study of a vortex in superfluid He and search for a vortex state in the solid
- Coexistence of vortex arrays and surface capillary waves in spinning prolate superfluid He-4 nanodroplets
- Probing quantum turbulence in He by quantum evaporation measurements
- Vortex precession and exchange in a Bose-Einstein condensate