Moving obstacle potential in a spin-orbit-coupled Bose-Einstein condensate
Moving obstacle potential in a spin-orbit-coupled Bose-Einstein condensate
复制标题
自旋轨道耦合玻色-爱因斯坦凝聚体中移动障碍物势
DOI：
10.1103/physreva.96.033613
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发表时间：
2017-07
影响因子：
2.9
通讯作者：
Saito Hiroki
中科院分区：
文献类型：
--
作者：
Kato Masaya;Zhang Xiao-Fei;Saito Hiroki
我们研究了在具有 Rashba 自旋轨道耦合的赝自旋 $1/2$ 玻色-爱因斯坦凝聚体的平面波状态下移动的障碍物势周围的动力学。我们对系统的动力学进行了数值研究，发现它不仅取决于障碍物的速度，而且还显着取决于障碍物运动的方向，这一点通过 Bogoliubov 分析得到了验证。获得相对于速度和方向的激励图。还研究了临界速度对自旋轨道耦合强度和障碍物尺寸的依赖性。
We investigate the dynamics around an obstacle potential moving in the plane-wave state of a pseudospin-$1/2$ Bose-Einstein condensate with Rashba spin-orbit coupling. We numerically investigate the dynamics of the system and find that it depends not only on the velocity of the obstacle but also significantly on the direction of obstacle motion, which are verified by a Bogoliubov analysis. The excitation diagram with respect to the velocity and direction is obtained. The dependence of the critical velocity on the strength of the spin-orbit coupling and the size of the obstacle is also investigated.