Self-bound Bose-Fermi liquids in lower dimensions
Abstract
We study weakly interacting mixtures of ultracold atoms composed of bosonic and fermionic species in 2D and 1D. When interactions between particles are appropriately tuned, self-bound quantum liquids can be formed. We show that while formation of these droplets in 2D is due to the higher order correction terms contributing to the total energy and originating in quantum fluctuations, in 1D geometry the quantum fluctuations have a negligible role on formation of the self-bound systems. The leading mean-field interactions are then sufficient for droplet formation in 1D. We analyse stability conditions for 2D and 1D systems and predict values of equilibrium densities of droplets.
Cite
@article{arxiv.1808.04793,
title = {Self-bound Bose-Fermi liquids in lower dimensions},
author = {Debraj Rakshit and Tomasz Karpiuk and Paweł Zin and Mirosław Brewczyk and Maciej Lewenstein and Mariusz Gajda},
journal= {arXiv preprint arXiv:1808.04793},
year = {2019}
}
Comments
Modified analysis in 2D and new results in 1D; 5 pages, 6 figures;