论文标题
偶极混合物的量子液滴
Quantum droplets of dipolar mixtures
论文作者
论文摘要
最近，实现了两极分子偶极的玻璃纤维凝结物，开辟了令人兴奋的可能性，以研究超含量量子液体的混合物。虽然非偶极自结合的混合物必然可以混乱，而两种密度之间的比率约为固定比率，但偶极性情况的密度比是游离的。结果，自我结合的偶极混合物呈现定性新颖，物理学更丰富，其特征是三个可能的地面阶段：可混杂，对称的不混溶和不对称的不混溶，这原则上可能出现在任何人口失衡处。由于相互的非本地分组间吸引力，可以自我结合的不混溶液滴，从而导致液滴分子的形成。此外，我们对杂质制度的分析表明，大多数组成部分中的量子波动可修改杂质的混杂性。我们的作品为在超稀释液体中探索纺纱物物理学的探索带来了有趣的观点，这应该在某种程度上类似于4HE-3HE液滴和杂质掺杂的氦液滴。
Recently achieved two-component dipolar Bose-Einstein condensates open exciting possibilities for the study of mixtures of ultra-dilute quantum liquids. While non-dipolar self-bound mixtures are necessarily miscible with an approximately fixed ratio between the two densities, the density ratio for the dipolar case is free. As a result, self-bound dipolar mixtures present qualitatively novel and much richer physics, characterized by three possible ground-state phases: miscible, symmetric immiscible and asymmetric immiscible, which may in principle occur at any population imbalance. Self-bound immiscible droplets are possible due to mutual non-local inter-component attraction, which results in the formation of a droplet molecule. Moreover, our analysis of the impurity regime, shows that quantum fluctuations in the majority component crucially modify the miscibility of impurities. Our work opens intriguing perspectives for the exploration of spinor physics in ultra-dilute liquids, which should resemble to some extent that of 4He-3He droplets and impurity-doped helium droplets.
