Solitary waves in a quantum droplet-bearing system
Solitary waves in a quantum droplet-bearing system
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DOI：
10.1103/physreva.107.063308
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发表时间：
2023-02
影响因子：
2.9
通讯作者：
G. Katsimiga;S. Mistakidis;G. N. Koutsokostas;D. Frantzeskakis;R. Carretero-González;P. Kevrekidis
中科院分区：
文献类型：
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作者：
G. Katsimiga;S. Mistakidis;G. N. Koutsokostas;D. Frantzeskakis;R. Carretero-González;P. Kevrekidis
我们揭示了暗孤子解的存在性和稳定性，因为它们从捕获的量子液滴的范围延伸到同核对称玻色混合物中的托马斯-费米极限。利用相平面分析，我们确定了不同类型量子液滴的存在状态，并随后检查了该系统中黑色和灰色孤子以及扭结型结构的可能性。此外，我们采用朗道动力学方法来提取相关扩展 Gross-Pitaevskii 模型中单个暗孤子振荡频率的分析估计。在这个框架内，我们还发现浸入液滴中的单个孤子是稳定的，而多孤子配置则表现出振荡不稳定性的参数窗口。我们的结果为研究当代实验环境中液滴环境中非线性多孤子激发的动力学特征铺平了道路。
We unravel the existence and stability properties of dark soliton solutions as they extend from the regime of trapped quantum droplets towards the Thomas-Fermi limit in homonuclear symmetric Bose mixtures. Leveraging a phase-plane analysis, we identify the regimes of existence of different types of quantum droplets and subsequently examine the possibility of black and gray solitons and kink-type structures in this system. Moreover, we employ the Landau dynamics approach to extract an analytical estimate of the oscillation frequency of a single dark soliton in the relevant extended Gross-Pitaevskii model. Within this framework, we also find that the single soliton immersed in a droplet is stable, while multisoliton configurations exhibit parametric windows of oscillatory instabilities. Our results pave the way for studying dynamical features of nonlinear multisoliton excitations in a droplet environment in contemporary experimental settings.