论文标题
除了Lee-huang-yang的自我结合混合物的描述
Beyond Lee-Huang-Yang description of self-bound Bose mixtures
论文作者
论文摘要
我们研究了自结合的超纤维玻色 - 玻璃混合物的特性，超出了Lee-huang-yang的描述。我们的方法是基于以自洽的方式确定混合物的声子模式的均值校正和相关状态方程的计算。新获得的基态能量与最近的量子蒙特卡洛计算表现出了极好的一致性，从而简单而准确地描述了与接触类型相互作用的自结界混合物。我们通过调整毛taevskii方程来进一步显示有限尺寸液滴的平衡性能的数值结果。我们的分析扩展到一维混合物，在该混合物中，发现与平衡密度的量子蒙特卡洛预测有很好的一致性。最后，我们讨论温度对液相稳定性的影响。
We investigate the properties of self-bound ultradilute Bose-Bose mixtures, beyond the Lee-Huang-Yang description. Our approach is based on the determination of the beyond mean-field corrections to the phonon modes of the mixture in a self-consistent way and calculation of the associated equation of state. The newly obtained ground state energies show excellent agreement with recent quantum Monte Carlo calculations, providing a simple and accurate description of the self-bound mixtures with contact type interaction. We further show numerical results for the equilibrium properties of the finite size droplet, by adjusting the Gross-Pitaevskii equation. Our analysis is extended to the one-dimensional mixtures where an excellent agreement with quantum Monte Carlo predictions is found for the equilibrium densities. Finally, we discuss the effects of temperature on the stability of the liquid phase.
