Three-body interactions with cold polar molecules
摘要
We show that polar molecules driven by microwave fields give naturally rise to strong three-body interactions, while the two-particle interaction can be independently controlled and even switched off. The derivation of these effective interaction potentials is based on a microscopic understanding of the underlying molecular physics, and follows from a well controlled and systematic expansion into many-body interaction terms. For molecules trapped in an optical lattice, we show that these interaction potentials give rise to Hubbard models with strong nearest-neighbor two-body and three-body interaction. As an illustration, we study the one-dimensional Bose-Hubbard model with dominant three-body interaction and derive its phase diagram.
引用
@article{arxiv.cond-mat/0703688,
title = {Three-body interactions with cold polar molecules},
author = {H. P. Büchler and A. Micheli and P. Zoller},
journal= {arXiv preprint arXiv:cond-mat/0703688},
year = {2015}
}
备注
8 pages, 4 figures