论文标题
二维自结合量子液滴的基态和旋转特性
Ground state and rotational properties of two-dimensional self-bound quantum droplets
论文作者
论文摘要
我们考虑了二维自结合的量子液滴，该液滴由两种Bose-Einstein冷凝物的混合物组成。我们从基态开始，然后在存在外部（谐波）电位的情况下转向该系统的旋转响应。我们确定各个阶段，具体取决于原子数，外部限制的强度和角动量。这些包括质量激发的中心，幽灵涡流以及单量化和多重量化的涡流。根据我们的结果，这是研究超流体状态的绝佳系统。
We consider a two-dimensional self-bound quantum droplet, which consists of a mixture of two Bose-Einstein condensates. We start with the ground state, and then turn to the rotational response of this system, in the presence of an external (harmonic) potential. We identify various phases, depending on the atom number, the strength of the external confinement and the angular momentum. These include center of mass excitation, ghost vortices, as well as vortices of single and multiple quantization. According to our results, this is an excellent system for the study of superfluid states.
