Effect of condensate depletion on the critical velocity for vortex nucleation in quantum fluids
Effect of condensate depletion on the critical velocity for vortex nucleation in quantum fluids
复制标题
凝聚态耗尽对量子流体中涡旋成核临界速度的影响
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
C. Adams
中科院分区：
文献类型：
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作者：
M. Leadbeater;T. Winiecki;C. Adams
通过对均匀稀释量子流体中物体运动的数值模拟，我们发现在恒定平均超流密度下，涡旋形成的临界速度依赖于凝聚分数。我们认为，在较低的凝聚分数较低的临界速度是由于无涡和涡状态之间的转换驱动的密度波动。
By performing numerical simulations of object motion through homogeneous dilute quantum fluids, we show that the critical velocity for vortex formation at constant average superfluid density depends on the condensate fraction. We suggest that the lower critical velocity at lower condensate fraction is due to transitions between the no-vortex and vortex states driven by density fluctuations.