Stationary wave patterns generated by an impurity moving with supersonic velocity through a Bose-Einstein condensate

Stationary wave patterns generated by an impurity moving with supersonic velocity through a Bose-Einstein condensate
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DOI：
10.1103/physreva.79.053619
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发表时间：
2009-02
期刊：
Physical Review A
影响因子：
2.9
通讯作者：
Tzyy-Leng Horng;S. Gou;T.-C. Lin;G. El;A. Itin;A. Kamchatnov
Tzyy-Leng Horng;S. Gou;T.-C. Lin;G. El;A. Itin;A. Kamchatnov
中科院分区：
物理与天体物理2区
文献类型：
--
作者：
Tzyy-Leng Horng;S. Gou;T.-C. Lin;G. El;A. Itin;A. Kamchatnov

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研究了一个小的点状杂质以超声速通过玻色-爱因斯坦凝聚体所产生的固定三维（3D）波的形成。得到了稳态远场密度分布的渐近公式。与三维数值模拟的比较表明，在距离障碍物几个波长的范围内，这些公式已经足够精确。
Formation of stationary three-dimensional (3D) wave patterns generated by a small pointlike impurity moving through a Bose-Einstein condensate with supersonic velocity is studied. Asymptotic formulae for a stationary far-field density distribution are obtained. Comparison with the three-dimensional numerical simulations demonstrates that these formulae are accurate enough already at the distances from the obstacle equal to a few wavelengths.