Self-trapping of Bose-Einstein condensates in optical lattices
Abstract
The self-trapping phenomenon of Bose-Einstein condensates (BECs) in optical lattices is studied extensively by numerically solving the Gross-Pitaevskii equation. Our numerical results not only reproduce the phenomenon that was observed in a recent experiment [Anker {\it et al.}, Phys. Rev. Lett. {\bf 94} (2005)020403], but also find that the self-trapping breaks down at long evolution times, that is, the self-trapping in optical lattices is only temporary. The analysis of our numerical results shows that the self-trapping in optical lattices is related to the self-trapping of BECs in a double-well potential. A possible mechanism of the formation of steep edges in the wave packet evolution is explored in terms of the dynamics of relative phases between neighboring wells.
Keywords
Cite
@article{arxiv.cond-mat/0601249,
title = {Self-trapping of Bose-Einstein condensates in optical lattices},
author = {Bingbing Wang and Panming Fu and Jie Liu and Biao Wu},
journal= {arXiv preprint arXiv:cond-mat/0601249},
year = {2007}
}
Comments
8 pages, 15 figures