AC-induced superfluidity
Other Condensed Matter
2007-10-30 v2
Abstract
We argue that a system of ultracold bosonic atoms in a tilted optical lattice can become superfluid in response to resonant AC forcing. Among others, this allows one to prepare a Bose-Einstein condensate in a state associated with a negative effective mass. Our reasoning is backed by both exact numerical simulations for systems consisting of few particles, and by a theoretical approach based on Floquet-Fock states.
Cite
@article{arxiv.0709.0605,
title = {AC-induced superfluidity},
author = {Andre Eckardt and Martin Holthaus},
journal= {arXiv preprint arXiv:0709.0605},
year = {2007}
}
Comments
Accepted for publication in Europhysics letters, 6 pages, 4 figures, Changes in v2: reference 7 replaced by a more recent one