论文标题
量子多体系统的主动学习阶段边界
Active learning phase boundaries of a quantum many-body system
论文作者
论文摘要
我们描述了如何使用机器学习领域的技术来指导变异能量最小化方案来搜索量子多体系统的相边界。建模的物理系统提出了有限动量冷凝物的状态,也称为FFLO状态,以及统一的超氟相位相位,其本身就很有趣。但是,从计算的角度来看,对众多相边界的完整描述很昂贵。在这项工作中,我们将能量最小化的输出视为标记的音节数据集,以训练支持向量分类器,以将有限动量冷凝物与超氟和正常状态分开。然后,我们可以使用训练有素的支撑矢量分类器来重新集中最小化器,以加强其在分隔三个区域的边界附近的计算。这样做将阻止使用最小化器在正常或超流体区域内执行昂贵的计算,从而更有效地使用了计算时间。我们描述的过程的应用很简单,应适用于相边界的任何计算搜索。
We describe how to use techniques from the field of Machine Learning to direct a variational energy minimization scheme to search for phase boundaries of a quantum many-body system. The modeled physical system presents states of finite momentum condensate, also known as FFLO states, as well as a uniform superfluid phase-all of which is interesting in its own right; however, a full description of the multitude of phase boundaries is expensive from a computational standpoint. In this work, we treat the output of the energy minimization as a labeled sythetic data set to train a support vector classifier to separate states of finite momentum condensate from superfluid and normal states. We can then use the trained support vector classifier to refocus the minimizer to intensify its calculations near the boundary separating each of the three regions. Doing so will preclude using the minimizer to perform expensive calculations deep within the normal or superfluid regions, resulting in more efficient use of compute time. The application of the procedure we describe is straightforward and should be applicable in any computational search of phase boundaries.