标题： 谐波势中束缚的玻色-玻色混合物：量子蒙特卡罗研究 显示英文标题

标题： Harmonically trapped Bose-Bose mixtures: a quantum Monte Carlo study

摘要： 我们使用量子蒙特卡罗方法研究了一个谐波束缚的玻色-玻色混合系统。 我们的密度分布结果在相同条件下与通过Gross-Pitaevskii方程得出的平均场预测进行了系统比较。 相互作用强度和质量之间的相空间非常丰富。 对于均匀系统，混溶性准则在该系统中应用得相当好，但在分离临界线附近有一些差异。 我们观察到平均场结果与蒙特卡罗结果之间存在显著差异，当质量不对称性增加时，这种差异会放大。 在分析的相互作用区域内，我们观察到结果的普遍性，这些结果超出了Gross-Pitaevskii方程的适用范围。 显示英文摘要

摘要： We study a harmonically confined Bose-Bose mixture using quantum Monte Carlo methods. Our results for the density profiles are systematically compared with mean-field predictions derived through the Gross-Pitaevskii equation in the same conditions. The phase space as a function of the interaction strengths and the relation between masses is quite rich. The miscibility criterion for the homogeneous system applies rather well to the system, with some discrepancies close to the critical line for separation. We observe significant differences between the mean-field results and the Monte Carlo ones, that magnify when the asymmetry between masses increases. In the analyzed interaction regime, we observe universality of our results which extend beyond the applicability regime for the Gross-Pitaevskii equation.