光晶格中玻色-氦原子气的物质波干涉、约舍夫振荡及其破坏
软凝聚态物质
2015-06-24 v1
摘要
我们使用轴对称时依赖的平均场格子-皮塔维斯基方程，研究了由 Cataliotti 等人实验 [Science 293 (2001) 843, New J. Phys. 5 (2003) 71.1] 描述的斥性玻色-氦原子气在谐振势加上一维光晶格势约束下的约舍夫振荡。在研究光晶格约束下释放后物质波干涉的形成后，我们直接探讨了将谐振阱在光轴上位移后，交替出现的原子超流约舍夫电流。我们发现，当将谐振阱位移超过临界距离时，约舍夫电流将被破坏，这表明该玻色-氦原子气发生从超流向经典绝缘体的相变。
关键词
引用
@article{arxiv.cond-mat/0308498,
title = {Matter-wave interference, Josephson oscillation and its disruption in a Bose-Einstein condensate on an optical lattice},
author = {Sadhan K. Adhikari},
journal= {arXiv preprint arXiv:cond-mat/0308498},
year = {2015}
}
备注
5 pages; 8 ps and eps figures, Lead parallel session talk in the 17th International Conference on Few-Body Physics, Duke University 2003, to appear in Nuclear Physics A