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.
CITATION STYLE
Mithun, T., Maluckov, A., Kasamatsu, K., Malomed, B. A., & Khare, A. (2020). Modulational instability, inter-component asymmetry, and formation of quantum droplets in one-dimensional binary bose gases. Symmetry, 12(1). https://doi.org/10.3390/SYM12010174
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