Formation and fragmentation of quantum droplets in a quasi-one dimensional dipolar Bose gas

Abstract

We theoretically investigate the droplets formation in a tightly trapped one-dimensional dipolar gas of bosonic atoms. When the strength of the dipolar interaction becomes sufficiently attractive compared to the contact one, we show how a solitonic-like density profile evolves into a liquid-like droplet on increasing the number of particles in the trap. The incipient gas-liquid transition is also signalled by a steep increase of the breathing mode and a change in sign of the chemical potential. Upon a sudden release of the trap, varying the number of trapped atoms and the scattering length, the numerical solution of a time-dependent generalized Gross-Pitaevskii equation shows either an evaporation of the cloud, the formation of a single self-bound droplet or a fragmentation in multiple droplets.These results can be probed with lanthanides atoms and help in characterizing the effect of the dipolar interaction in a quasi-one-dimensional geometry.

RevTex 4, 11 PDF figures, 10 pages

References in corpus (10)

• Bose-Einstein Condensation of Erbium
• 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
• Dipolar gases in quasi one-dimensional geometries
• Solitons in Tonks-Girardeau gas with dipolar interactions
• Light-induced quantum droplet phases of lattice bosons in multimode cavities
• Variational Bethe Ansatz approach for dipolar one-dimensional bosons
• Polarization angle dependence of the breathing modes in confined one-dimensional dipolar bosons
• Beyond Gross-Pitaevskii equation for 1D gas: quasiparticles and solitons
• Morphology of dipolar Bose droplets

Cited by in corpus (8)

• Solitary waves in a quantum droplet-bearing system
• Ultrawide dark solitons and droplet-soliton coexistence in a dipolar Bose gas with strong contact interactions
• Superexchange Liquefaction of Strongly Correlated Lattice Dipolar Bosons
• Quantum Monte Carlo-based density functional for one-dimensional Bose-Bose mixtures
• Breathing mode of a quantum droplet in a quasi-one-dimensional dipolar Bose gas
• Expansion of strongly interacting dipolar bosons in 1D optical lattices
• Effect of transverse confinement on a quasi-one dimensional dipolar Bose gas
• Phase diagram and elementary excitations of strongly interacting droplets with non-local interactions