Modulational instability, inter-component asymmetry and formation of quantum droplets in one-dimensional binary Bose gases
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.
Keywords
Cite
@article{arxiv.1911.02676,
title = {Modulational instability, inter-component asymmetry and formation of quantum droplets in one-dimensional binary Bose gases},
author = {Thudiyangal Mithun and Aleksandra Maluckov and Kenichi Kasamatsu and Boris A. Malomed and Avinash Khare},
journal= {arXiv preprint arXiv:1911.02676},
year = {2020}
}
Comments
To be published in Symmetry (special issue on Symmetry and Mesoscopic Physics)