Abstract
Quantum droplets are ultradilute liquid states that emerge from the competitive interplay of two Hamiltonian terms, the mean-field energy and beyond-mean-field correction, in a weakly interacting binary Bose gas. We relate the formation of droplets in symmetric and asymmetric two-component one-dimensional boson systems to the modulational instability of a spatially uniform state driven by the beyond-mean-field term. Asymmetry between the components may be caused by their unequal populations or unequal intra-component interaction strengths. Stability of both symmetric and asymmetric droplets is investigated. Robustness of the symmetric solutions against symmetry-breaking perturbations is confirmed.
Original language | English |
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Article number | 174 |
Journal | Symmetry |
Volume | 12 |
Issue number | 1 |
DOIs | |
State | Published - 2020 |
Keywords
- Binary Bose-Einstein condensate
- Modulational instability
- Quantum droplet