Fast dynamics for atoms in optical lattices
Abstract
Cold atoms in optical lattices allow for accurate studies of many body dynamics. Rapid time-dependent modifications of optical lattice potentials may result in significant excitations in atomic systems. The dynamics in such a case is frequently quite incompletely described by standard applications of tight-binding models (such as e.g. Bose-Hubbard model or its extensions) that typically neglect the effect of the dynamics on the transformation between the real space and the tight-binding basis. We illustrate the importance of a proper quantum mechanical description using a multi-band extended Bose-Hubbard model with time-dependent Wannier functions. We apply it to situations, directly related to experiments.
Cite
@article{arxiv.1210.7957,
title = {Fast dynamics for atoms in optical lattices},
author = {Mateusz Lacki and Jakub Zakrzewski},
journal= {arXiv preprint arXiv:1210.7957},
year = {2013}
}
Comments
4pp+supplement, final version accepted in Phys. Rev. Lett