Vortex patterns of atomic Bose-Einstein condensates in a density-dependent gauge potential
Vortex patterns of atomic Bose-Einstein condensates in a density-dependent gauge potential
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DOI：
10.1103/physreva.102.011303
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发表时间：
2020-07-27
影响因子：
2.9
通讯作者：
Nitta, Muneto
中科院分区：
文献类型：
--
作者：
Edmonds, Matthew;Nitta, Muneto
我们从理论上考察了被捕获的准二维超冷玻色子在密度依赖规范势作用下的涡旋态，实现了原子凝聚体的有效非线性旋转，并证明了这是目前超冷原子实验技术所能达到的。非线性旋转具有双重效应；除了扭曲凝结物的形状外，它还会导致不均匀的涡度，从而导致独特的形态和拓扑状态，包括不遵循标准Abrikosov结果的环状涡排列。由于缺乏全局实验室参照系，本文还探讨了与刚体旋转不同的困涡流动力学。
We theoretically examine the vortex states of a gas of trapped quasi-two-dimensional ultracold bosons subject to a density-dependent gauge potential, realizing an effective nonlinear rotation of the atomic condensate, which we also show is within the reach of current experimental techniques with ultracold atom experiments. The nonlinear rotation has a twofold effect; as well as distorting the shape of the condensate it also leads to an inhomogeneous vorticity resulting in unique morphological and topological states, including ring vortex arrangements that do not follow the standard Abrikosov result. The dynamics of trapped vortices are also explored, which differ from the case of rigid-body rotation due to the absence of a global laboratory reference frame.