Modulational instability, inter-component asymmetry and formation of quantum droplets in one-dimensional binary Bose gases
arXiv:1911.02676 · doi:10.3390/sym12010174
Abstract
Quantum droplets are ultradilute liquid states which 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.
To be published in Symmetry (special issue on Symmetry and Mesoscopic Physics)
References in corpus (10)
- Quantum liquid droplets in a mixture of Bose-Einstein condensates
- Self-bound droplets of a dilute magnetic quantum liquid
- Collisions of self-bound quantum droplets
- Two-dimensional solitons and quantum droplets supported by competing self- and cross-interactions in spin-orbit-coupled condensates
- Metastability of quantum droplet clusters
- Symmetry breaking of quantum droplets in a dual-core trap
- Onset of a modulational instability in trapped dipolar Bose-Einstein condensates
- Quantum solitons in spin-orbit-coupled Bose-Bose mixtures
- Low-Dimensional Self-Bound Quantum Rabi-Coupled Bosonic Droplets
- Formation of granular structures in trapped Bose-Einstein condensates under oscillatory excitations