论文标题
监禁下的液滴：竞争与孤儿界面状态
Droplet under confinement: Competition and coexistence with soliton bound state
论文作者
论文摘要
我们研究了量子液滴及其相关的相变的稳定性，该相位均匀地限制在准二维中。我们表明，在增加原子数或减少限制长度时，限制引起的边界效应可能很重要，这使量子液滴朝着孤子结合状态的形成破坏了量子液滴。特别是，随着原子数的增加，我们发现了孤子基态的重新进入，而液滴仅在有限的数字窗口中稳定，而这些窗口敏感地取决于限制长度。在液滴 - 索尔顿过渡附近，它们可以在能量景观中作为两个局部最小值彼此共存。以两个物种的$^{39} $ k玻色子为例，我们已经根据原子数和限制长度绘制了液滴 - 索尔顿过渡和共存的相图。在当前的冷原子实验中，很容易探测量子液滴和孤子之间的揭示的有趣的竞争。
We study the stability of quantum droplet and its associated phase transitions in ultracold Bose-Bose mixtures uniformly confined in quasi-two-dimension. We show that the confinement-induced boundary effect can be significant when increasing the atom number or reducing the confinement length, which destabilizes the quantum droplet towards the formation of a soliton bound state. In particular, as increasing the atom number we find the reentrance of soliton ground state, while the droplet is stabilized only within a finite number window that sensitively depends on the confinement length. Near the droplet-soliton transitions, they can coexist with each other as two local minima in the energy landscape. Take the two-species $^{39}$K bosons for instance, we have mapped out the phase diagram for droplet-soliton transition and coexistence in terms of atom number and confinement length. The revealed intriguing competition between quantum droplet and soliton under confinement can be readily probed in current cold atoms experiments.
