Bose-Einstein condensates with large number of vortices.
Bose-Einstein condensates with large number of vortices.
复制标题
DOI：
10.1103/physrevlett.87.060403
复制
发表时间：
2001-04
影响因子：
8.6
通讯作者：
T. Ho
中科院分区：
文献类型：
--
作者：
T. Ho
我们表明，作为在三维玻色-爱因斯坦凝聚体的涡旋数的增加，系统达到“量子霍尔”制度的密度分布是一个高斯在xy平面和一个倒抛物线剖面沿着z。系统的角动量随着涡格的收缩而增加。然而，科里奥利力阻止涡格的单位晶胞收缩超过最小尺寸。尽管麻省理工学院最近的实验并不完全处于量子霍尔状态，但它已经足够接近目前的结果，可以用作指导。量子霍尔区可以很容易地通过适当的改变电流的实验参数。
We show that as the number of vortices in a three dimensional Bose-Einstein condensate increases, the system reaches a "quantum Hall" regime where the density profile is a Gaussian in the xy plane and an inverted parabolic profile along z. The angular momentum of the system increases as the vortex lattice shrinks. However, Coriolis force prevents the unit cell of the vortex lattice from shrinking beyond a minimum size. Although the recent MIT experiment is not exactly in the quantum Hall regime, it is close enough for the present results to be used as a guide. The quantum Hall regime can be easily reached by moderate changes of the current experimental parameters.