论文标题
量子液滴的形成和碎片，在准中二极化的偶极胶气中
Formation and fragmentation of quantum droplets in a quasi-one dimensional dipolar Bose gas
论文作者
论文摘要
从理论上讲，我们研究了在骨气原子的紧密捕获的一维偶极气中的液滴形成。当与接触相比，当偶极相互作用的强度变得足够吸引人时，我们展示了孤子样密度曲线如何演变成液态液滴，以增加陷阱中的颗粒数量。初期的气体液体过渡也通过呼吸模式的急剧增加和化学电位的迹象变化来发出信号。陷阱突然释放后，改变了捕获的原子的数量和散射长度，时间依赖性的概括性毛pitaevskii方程的数值解显示，云的蒸发既可以蒸发，形成了单个自结合的液滴或在多个液滴中的片段化的结果。准一维几何形状。
We theoretically investigate the droplets formation in a tightly trapped one-dimensional dipolar gas of bosonic atoms. When the strength of the dipolar interaction becomes sufficiently attractive compared to the contact one, we show how a solitonic-like density profile evolves into a liquid-like droplet on increasing the number of particles in the trap. The incipient gas-liquid transition is also signalled by a steep increase of the breathing mode and a change in sign of the chemical potential. Upon a sudden release of the trap, varying the number of trapped atoms and the scattering length, the numerical solution of a time-dependent generalized Gross-Pitaevskii equation shows either an evaporation of the cloud, the formation of a single self-bound droplet or a fragmentation in multiple droplets.These results can be probed with lanthanides atoms and help in characterizing the effect of the dipolar interaction in a quasi-one-dimensional geometry.
