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arXiv 2207.00513cond-mat.quant-gasnlin.PS
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三维玻色-爱因斯坦凝聚体中的量子液滴

Quantum droplets in three-dimensional Bose-Einstein condensates

Sherzod R. Otajonov

摘要:

用变分法和数值方法研究了三维玻色-爱因斯坦凝聚体的性质。在变分方法中,我们使用了超高斯试探函数,并证明了这种试探函数给出了一个很好的方法来描述量子液滴。得到了变分参数的解析方程。量子液滴的平衡位置附近的小振荡的频率估计。研究还发现,周期性调制的耦合常数导致量子液滴参数的共振振荡或发射波取决于调制的振幅。控制方程的直接数值模拟支持的预测。

英文摘要:

The properties of 3D Bose-Einstein condensate have been studied with variational and numerical methods. In the variational approach, we use the super-Gaussian trial function, and it is demonstrated that this trial function gives a good approach for the descriptions of the quantum droplets. The analytical equations for the variational parameters are obtained. The frequency of small oscillations of quantum droplets near the equilibrium position is estimated. It is also found that periodic modulation of the coupling constants leads to the resonance oscillations of the quantum droplets parameters or emission of waves depending on the amplitude of the modulations. The predictions are supported by direct numerical simulation of governing equation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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