Observation and analysis of multiple dark-antidark solitons in two-component Bose-Einstein condensates
Observation and analysis of multiple dark-antidark solitons in two-component Bose-Einstein condensates
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DOI：
10.1103/physreva.102.023301
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发表时间：
2020-02
影响因子：
2.9
通讯作者：
G. Katsimiga;S. Mistakidis;T. Bersano;M. Ome;S. Mossman;K. Mukherjee;K. Mukherjee;P. Schmelcher-P.-Schmel
中科院分区：
文献类型：
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作者：
G. Katsimiga;S. Mistakidis;T. Bersano;M. Ome;S. Mossman;K. Mukherjee;K. Mukherjee;P. Schmelcher-P.-Schmel
本文研究了排斥相互作用玻色-爱因斯坦凝聚体中多重暗-反暗孤子（DAD）的静态和动态性质。出于实验观察涉及多个DAD，我们提出了一个理论研究，展示了暗（反暗）孤子的混合物的第一（第二）组件组成的束缚态存在不同值的种间相互作用。据发现，合奏的几个DAD可能存在稳定的配置，而较大的DAD阵列，相对于种间相互作用强度的稳定性的相关窗口变得越来越窄。此外，动态形成的状态组成的交替DAD的两个组件的混合物进行监测。观察到这些状态的复杂的动力学演化，导致排序DAD或跳动的暗暗孤子取决于种间耦合的强度。这项研究表明，未来的调查DAD配置明确的途径。
We report on the static and dynamical properties of multiple dark-antidark solitons (DADs) in two-component, repulsively interacting Bose-Einstein condensates. Motivated by experimental observations involving multiple DADs, we present a theoretical study which showcases that bound states consisting of dark (antidark) solitons in the first (second) component of the mixture exist for different values of interspecies interactions. It is found that ensembles of few DADs may exist as stable configurations, while for larger DAD arrays, the relevant windows of stability with respect to the interspecies interaction strength become progressively narrower. Moreover, the dynamical formation of states consisting of alternating DADs in the two components of the mixture is monitored. A complex dynamical evolution of these states is observed, leading either to sorted DADs or to beating dark-dark solitons depending on the strength of the interspecies coupling. This study demonstrates clear avenues for future investigations of DAD configurations.