标题： 改善格点QCD中的介子两点函数 显示英文标题

标题： Improving meson two-point functions in lattice QCD

摘要： 我们描述并测试了一种在格点QCD中计算欧几里得介子两点函数的方法。Dirac算符的低能本征模贡献通过对夸克源的所有位置求平均得到，而高模贡献则以传统方式通过每个格点的一个或少数几个源点来估算。在某些道中，我们观察到对于较小的夸克质量，两点函数有显著改善。 显示英文摘要

摘要： We describe and test a method to compute Euclidean meson two-point functions in lattice QCD. The contribution from the low-lying eigenmodes of the Dirac operator is averaged over all positions of the quark sources. The contribution from the higher modes is estimated in the traditional way with one or a few source points per lattice. In some channels, we observe a significant improvement in the two-point functions for small quark masses.