In master-field simulations of lattice QCD, the expectation values of interest are obtained from a single or at most a few representative gauge-field configurations on very large lattices. If the light quarks are included, the generation of these fields using standard techniques is however challenging in view of various algorithmic instabilities and precision issues. Ways to overcome these problems are described here for the case of the O(a)-improved Wilson formulation of lattice QCD and the viability of the proposed measures is then checked in extensive simulations of the theory with 2+1 flavours of quarks.

中文翻译：

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O(a) 改进的晶格 QCD 的主场模拟：算法、稳定性和准确性

在晶格 QCD 的主场模拟中，感兴趣的期望值是从非常大的晶格上的单个或至多几个代表性规范场配置中获得的。如果包括轻夸克，考虑到各种算法的不稳定性和精度问题，使用标准技术生成这些场是具有挑战性的。此处针对 O(a) 改进的格子 QCD 的威尔逊公式的情况描述了克服这些问题的方法，然后在具有 2+1 夸克风味的理论的广泛模拟中检查了所提出措施的可行性。