Journal
SYMMETRY-BASEL
Volume 12, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/sym12010174
Keywords
quantum droplet; binary Bose-Einstein condensate; modulational instability
Categories
Funding
- IBS [IBS-R024-D1]
- Ministry of Education, Science, and Technological Development of Republic of Serbia [III45010]
- COST Action [CA 16221]
- Japan Society for the Promotion of Science (JSPS) [18K03472]
- Israel Science Foundation [1287/17]
- Indian National Science Academy
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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.
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