论文标题
巨大XXZ链的精确实时纵向相关函数
Exact real-time longitudinal correlation functions of the massive XXZ chain
论文作者
论文摘要
我们应用了最近开发的热型要素扩展方法来评估自旋 - $ \ frac {1} {2} $ xxz链的实时纵向自旋旋转函数在温度下$ t = 0 $。获得模型中包含所有类型激发的分析结果，没有任何近似值。这允许在此强烈相互作用的量子系统中准确计算实时相关函数，以进行任意距离和时间。
We apply the recently developed thermal form factor expansion method to evaluate the real-time longitudinal spin-spin correlation functions of the spin-$\frac{1}{2}$ XXZ chain in the antiferromagnetically ordered regime at temperature $T=0$. An analytical result containing all types of excitations in the model is obtained, without any approximations. This allows for the accurate calculation of the real-time correlation functions in this strongly interacting quantum system for arbitrary distances and times.
