Mobile impurities interacting with a few one-dimensional lattice bosons
Quantum Gases
2023-02-06 v2 Quantum Physics
Abstract
We report a comprehensive study of the ground-state properties of one and two bosonic impurities immersed in small one-dimensional optical lattices loaded with a few interacting bosons. We model the system with a two-component Bose-Hubbard model and solve the problem numerically by means of the exact diagonalization (ED) method. We report binding energies of one and two impurities across the superfluid (SF) to Mott-insulator (MI) transition and confirm the formation of two-body bound states of impurities induced by repulsive interactions. In particular, we found that an insulator bath induces tightly bound di-impurity dimers, whereas a superfluid bath induces shallower bound states.
Cite
@article{arxiv.2207.09309,
title = {Mobile impurities interacting with a few one-dimensional lattice bosons},
author = {Vasil R. Yordanov and Felipe Isaule},
journal= {arXiv preprint arXiv:2207.09309},
year = {2023}
}
Comments
23 pages, 13 figures. Accepted version