Hubbard model for atomic impurities bound by the vortex lattice of a rotating BEC
Quantum Gases
2016-06-22 v1 Quantum Physics
Abstract
We investigate cold bosonic impurity atoms trapped in a vortex lattice formed by condensed bosons of another species. We describe the dynamics of the impurities by a bosonic Hubbard model containing occupation-dependent parameters to capture the effects of strong impurity-impurity interactions. These include both a repulsive direct interaction and an attractive effective interaction mediated by the BEC. The occupation dependence of these two competing interactions drastically affects the Hubbard model phase diagram, including causing the disappearance of some Mott lobes
Keywords
Cite
@article{arxiv.1512.09334,
title = {Hubbard model for atomic impurities bound by the vortex lattice of a rotating BEC},
author = {T. H. Johnson and Y. Yuan and W. Bao and S. R. Clark and C. Foot and D. Jaksch},
journal= {arXiv preprint arXiv:1512.09334},
year = {2016}
}
Comments
5 pages main text, 18 pages supplemental material