We establish an efficient approximation algorithm for the partition functions of a class of quantum spin systems at low temperature, which can be viewed as stable quantum perturbations of classical spin systems. Our algorithm is based on combining the contour representation of quantum spin systems of this type due to Borgs, Koteck\'y, and Ueltschi with the algorithmic framework developed by Helmuth, Perkins, and Regts, and Borgs et al.

翻译：我们为低温量子旋转系统的分类功能建立了一个高效近似算法,这可以被视为古典旋转系统的稳定的量子扰动。 我们的算法基于将Borgs、Koteck\'y和Ueltschi等公司造成的这类量子旋转系统的轮廓表示与Helmuth、Perkins和Regts以及Borgs等公司开发的算法框架结合起来。