Josephson Current Flowing in Cyclically Coupled Bose-Einstein Condensates
软凝聚态物质
2009-10-31 v2
摘要
The Josephson effect in cyclically coupled Bose-Einstein condensates is studied theoretically. We analyze the simultaneous Gross-Pitaevskii equations with coupling terms between adjacent condensates. Depending on the initial relative phases between condensates, Josephson current flows cyclically to make a quantized vortex. Reducing the coupling between condensates changes the motion from periodic to chaotic, thus suppressing the cyclic current. The relation to the Kibble-Zurek mechanism is discussed.
引用
@article{arxiv.cond-mat/9911389,
title = {Josephson Current Flowing in Cyclically Coupled Bose-Einstein Condensates},
author = {Makoto Tsubota and Kenichi Kasamatsu},
journal= {arXiv preprint arXiv:cond-mat/9911389},
year = {2009}
}
备注
4 pages, 3 figure, to be published in Journal of Physical Society of Japan