Many-body tunneling dynamics of Bose-Einstein condensates and vortex states in two spatial dimensions
Many-body tunneling dynamics of Bose-Einstein condensates and vortex states in two spatial dimensions
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DOI：
10.1103/physreva.92.043627
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发表时间：
2015-10-27
影响因子：
2.9
通讯作者：
Alon, Ofir E.
中科院分区：
文献类型：
--
作者：
Beinke, Raphael;Klaiman, Shachar;Alon, Ofir E.
在这项工作中，我们研究了二维径向双阱中玻色-爱因斯坦凝聚态的非平衡多体隧道动力学。我们研究了粒子间斥力的影响，并比较了角动量对多体隧道动力学的影响。通过求解完整的多体薛定谔方程可以获得精确的多体动力学。我们证明，具有确定总角动量的宏观涡旋态确实会隧道化，并且即使在弱排斥力的情况下，也需要多体处理来捕获正确的隧道动力学。一般来说，当隧道系统带有角动量时，多体效应会在较弱的相互作用下发生。
In this work, we study the out-of-equilibrium many-body tunneling dynamics of a Bose-Einstein condensate in a two-dimensional radial double well. We investigate the impact of interparticle repulsion and compare the influence of angular momentum on the many-body tunneling dynamics. Accurate many-body dynamics are obtained by solving the full many-body Schrodinger equation. We demonstrate that macroscopic vortex states of definite total angular momentum indeed tunnel and that, even in the regime of weak repulsions, a many-body treatment is necessary to capture the correct tunneling dynamics. As a general rule, many-body effects set in at weaker interactions when the tunneling system carries angular momentum.