Topological stirring of two-dimensional atomic Bose-Einstein condensates

Topological stirring of two-dimensional atomic Bose-Einstein condensates
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二维原子玻色-爱因斯坦凝聚态的拓扑搅拌

DOI:
10.1088/1742-6596/544/1/012021
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发表时间:
2014
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Conference Series
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White A
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我们通过移动三个激光搅拌器将涡旋搅拌到被捕获的准二维原子玻色-爱因斯坦凝聚态中。我们应用 Boyland 等人(2000)引入的搅拌协议,该协议有效地在经典流体中构建拓扑混沌,并被归类为伪阿诺索夫搅拌协议。将它们与低效的混合对应物、有限阶搅拌协议进行比较。我们研究低效的搅拌方案是否会导致涡流更加聚集的分布。涡旋在凝聚体中“混合”或分布的效率对于研究连续受迫量子湍流的动力学以及湍流二维超流体中逆级联的存在性非常重要。
We stir vortices into a trapped quasi two-dimensional atomic Bose-Einstein condensate by moving three laser stirrers. We apply stirring protocols introduced by Boyland et al.(2000), that efficiently build in topological chaos in classical fluids and are classified as Pseudo-Anosov stirring protocols. These are compared to their inefficient mixing counterparts, finite-order stirring protocols. We investigate if inefficient stirring protocols result in a more clustered distribution of vortices. The efficiency with which vortices are'mixed'or distributed in a condensate is important for investigating dynamics of continuously forced quantum turbulence and the existence of the inverse cascade in turbulent two-dimensional superfluids.
二维可压缩量子湍流中的直接能量级联
DOI: --
发表时间: 2010
期刊: Phys. Rev
影响因子: --
作者:
R. Numasato;M. Tsubota and V. S. L vov
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DOI: 10.1016/j.cpc.2012.08.016
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搅拌原子玻色-爱因斯坦凝聚中湍流的出现和衰变。
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