Dynamics of bubbles in a two-component Bose-Einstein condensate
Dynamics of bubbles in a two-component Bose-Einstein condensate
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DOI：
10.1103/physreva.83.033602
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发表时间：
2010-11
影响因子：
2.9
通讯作者：
Kazuki Sasaki;Naoya Suzuki;H. Saito
中科院分区：
文献类型：
--
作者：
Kazuki Sasaki;Naoya Suzuki;H. Saito
研究了两组分玻色-爱因斯坦凝聚体的动力学行为，其中一个组分的气泡穿过另一个组分。Gross-Pitaevskii方程的数值模拟揭示了与量子化涡旋的产生相关的各种动力学。在二维空间中，一个圆形的气泡变形成椭圆形，并分裂成带有漩涡的碎片，这些碎片经历了马格努斯效应。同时也产生了Benard-von Karman涡街。在三维空间中，球形气泡变形为带有涡环的环面。当两个环形成时，它们表现出蛙跳动力学。
The dynamics of a phase-separated two-component Bose-Einstein condensate are investigated, in which a bubble of one component moves through the other component. Numerical simulations of the Gross-Pitaevskii equation reveal a variety of dynamics associated with the creation of quantized vortices. In two dimensions, a circular bubble deforms into an ellipse and splits into fragments with vortices, which undergo the Magnus effect. The Benard-von Karman vortex street is also generated. In three dimensions, a spherical bubble deforms into toruses with vortex rings. When two rings are formed, they exhibit leapfrogging dynamics.