线耦合盘状玻色-爱因斯坦凝聚体中的自发对称破缺
量子气体
2012-01-17 v1 斑图形成与孤子
摘要
我们研究了隧道耦合对一对具有自吸引内禀非线性的平行盘状玻色-爱因斯坦凝聚体的影响。每个凝聚体被束缚在面内与横向谐振子势阱的组合中。研究表明，根据自相互作用强度和隧道耦合的不同，系统的基态表现出一种相变，该相变连接了三种构型：耦合凝聚体中原子数相等的对称构型、布居数不平衡的非对称构型（宏观量子自陷的体现）以及坍缩态。本文也报道了在盘状凝聚体中存在涡旋时系统相图的修正。对稳态构型周围动力学的研究揭示了强烈依赖于构型对称性的性质。
引用
@article{arxiv.1106.5340,
title = {Spontaneous symmetry breaking in linearly coupled disk-shaped Bose-Einstein condensates},
author = {Luca Salasnich and Boris A. Malomed},
journal= {arXiv preprint arXiv:1106.5340},
year = {2012}
}
备注
13 pages, 8 figures, accepted for publication in Molecular Physics, special issue "Luciano Reatto Festschrift" [LS thanks Luciano Reatto for 9 years of fruitful scientific collaboration at the Physics Department of the University of Milano]