Dynamics of highly unbalanced Bose-Bose mixtures: miscible vs. immiscible gases
Dynamics of highly unbalanced Bose-Bose mixtures: miscible vs. immiscible gases
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高度不平衡玻色-玻色混合物的动力学：混溶气体与不混溶气体
DOI：
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
A. Recati
中科院分区：
文献类型：
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作者：
A. Sartori;A. Recati
我们研究了高度不平衡玻色-玻色混合物中少数组分的集体模式。在混相情况下，少数分量感受到有效的外部电位，并推导出模态频率的解析表达式。后者与少数组分相互作用强度无关。在非混相情况下，我们发现基态可以是双畴壁孤子。虽然模态频率在跃迁时是连续的，但它们的行为在混相情况下是非常不同的。利用耦合Gross-Pitaevskii方程，数值研究了孤子结构的动力学行为和频率对种间和种内相互作用的依赖关系。
We study the collective modes of the minority component of a highly unbalanced Bose-Bose mixture. In the miscible case the minority component feels an effective external potential and we derive an analytical expression for the mode frequencies. The latter is independent of the minority component interaction strength. In the immiscible case we find that the ground state can be a two-domain walls soliton. Although the mode frequencies are continuous at the transition, their behaviour is very different with respect to the miscible case. The dynamical behaviour of the solitonic structure and the frequency dependence on the inter- and intra-species interaction is numerically studied using coupled Gross-Pitaevskii equations.
影响因子：
1.8
作者：
Bruderer, M.;Bao, W.;Jaksch, D.
通讯作者：
Jaksch, D.