Dynamics of dark solitons in a trapped superfluid fermi gas.
Dynamics of dark solitons in a trapped superfluid fermi gas.
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DOI：
10.1103/physrevlett.106.185301
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发表时间：
2010-11
影响因子：
8.6
通讯作者：
R. Scott;F. Dalfovo;L. Pitaevskiĭ;S. Stringari
中科院分区：
文献类型：
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作者：
R. Scott;F. Dalfovo;L. Pitaevskiĭ;S. Stringari
研究了超流费米气体中玻色-爱因斯坦凝聚体与Bardeen-Cooper-Schrieffer（BEC-BCS）交叉的孤子振荡。我们推导出一个精确的方程的振荡周期的可观测量，我们确认通过求解时间相关的Bogoliubov-de Gennes方程。因此，我们揭示了孤子的外观和动力学的交叉，并表明，周期显着增加的孤子变得浅的BCS一侧的共振。最后，我们提出了一个实验协议来测试我们的预测。
We study soliton oscillations in a trapped superfluid Fermi gas across the Bose-Einstein condensate to Bardeen-Cooper-Schrieffer (BEC-BCS) crossover. We derive an exact equation for the oscillation period in terms of observable quantities, which we confirm by solving the time-dependent Bogoliubov-de Gennes equations. Hence we reveal the appearance and dynamics of solitons across the crossover, and show that the period dramatically increases as the soliton becomes shallower on the BCS side of the resonance. Finally, we propose an experimental protocol to test our predictions.