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arXiv 0802.3019cond-mat.other
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双组分玻色-爱因斯坦凝聚体中的法拉第不稳定性

Faraday instability in a two-component Bose Einstein condensate

Aranya B. Bhattacherjee

摘要:

受最近关于玻色-爱因斯坦凝聚体(BEC)中法拉第波的实验的启发,我们研究了两组分雪茄形BEC受横向约束强度周期性调制的动力学。结果表明,两个耦合的Mathieu方程支配系统的动力学。我们发现,相混合态的双组分BEC比相分离态的BEC对斑图形成的不稳定性相对更大。

英文摘要:

Motivated by recent experiments on Faraday waves in Bose Einstein condensates (BEC) we investigate the dynamics of two component cigar shaped BEC subject to periodic modulation of the strength of the transverse confinement. It is shown that two coupled Mathieu equations govern the dynamics of the system. We found that the two component BEC in a phase mixed state is relatively more unstable towards pattern formation than the phase segregated state.

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