Breakup of quantum liquid filaments into droplets

Abstract

We have investigated how the Rayleigh-Plateau instability of a filament made of a 41K-87Rb self-bound mixture may lead to an array of identical quantum droplets, with typical breaking times which are shorter than the lifetime of the mixture. If the filament is laterally confined -- as it happens in a toroidal trap -- and atoms of one species are in excess with respect to the optimal, equilibrium ratio, the droplets are immersed into a superfluid background made by the excess species which provides global phase coherence to the system, suggesting that the droplets array in the unbalanced system may display supersolid character. This possibility has been investigated by computing the non-classical translational inertia coefficient. The filament may be a reasonable representation of a self-bound mixture subject to toroidal confinement when the bigger circle radius of the torus is much larger than the filament radius.

11 pages, 8 figures

References in corpus (6)

• Quantum liquid droplets in a mixture of Bose-Einstein condensates
• Quantum-fluctuation-driven crossover from a dilute Bose-Einstein condensate to a macro-droplet in a dipolar quantum fluid
• Feshbach resonances in rubidium 87: Precision measurement and analysis
• Feshbach resonances in ultracold K(39)
• Density Functional Theory of doped superfluid liquid helium and nanodroplets
• Nanoscopic jets and filaments of superfluid He-4 at zero temperature: a DFT study

Cited by in corpus (3)

• Dynamical formation of multiple quantum droplets in a Bose-Bose mixture
• Particle imbalanced weakly interacting quantum droplets in one-dimension
• Fragmentation Temperature of 1D and 3D Quantum Droplets in a BEC Mixture