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arXiv 1707.09136cond-mat.quant-gas
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自旋-轨道耦合玻色-爱因斯坦凝聚体中的运动障碍势

Moving obstacle potential in a spin-orbit-coupled Bose-Einstein condensate

Masaya Kato, Xiao-Fei Zhang, Hiroki Saito

摘要:

研究了具有Rashba自旋轨道耦合的赝自旋- $1/2$玻色-爱因斯坦凝聚体平面波态中障碍势的动力学行为。我们数值研究系统的动力学,发现它不仅取决于障碍物的速度,但也显着的障碍物运动的方向,这是验证了Bogoliubov分析。得到了关于速度和方向的激励图。研究了临界速度与自旋轨道耦合强度和障碍物大小的关系。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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