标题： 重子质量：格点QCD和手征有效场论 显示英文标题

标题： Hadron masses: lattice QCD and chiral effective field theory

摘要： 这项工作讨论了格点结果的手征外推的可靠性、可能的障碍以及未来展望。 在第一部分中，从统计不确定性和收敛性的角度，对核子质量的格点计算与手征微扰理论的拟合进行了深入探讨。 利用格点体积依赖性作为额外拟合约束的来源。 在讨论与介子-核子散射的一致性时，明确了Delta(1232)激发态的作用。 在工作的第二部分中，使用三味手征微扰理论分析了介子和K介子质量的格点数据。 SU(3)-SU(2)匹配条件允许检验对Gell-Mann、Oakes、Renner关系的偏离。 介绍章节提供了明显协变重子手征微扰理论的快速入门指南，格点QCD的基本理解以及相关统计方法的自包含解释。 显示英文摘要

摘要： This work discusses reliability, possible obstacles and the future perspective of chiral extrapolation of lattice results. In the first part, chiral perturbation theory fits to lattice calculations of the nucleon mass are thoroughly explored in terms of statistical uncertainty and convergence. Lattice volume dependence is exploited as a source of additional fit constraints. In discussing consistency with pion-nucleon scattering, the role of the Delta(1232) excitation is clarified. In the second part of the work, pion and kaon mass lattice data are analyzed using three-flavor chiral perturbation theory. SU(3)-SU(2) matching conditions permit to examine deviations from the Gell-Mann, Oakes, Renner relation. Introductory chapters provide a quick start guide to manifestly covariant baryon chiral perturbation theory, basic understanding of lattice QCD and a self-contained explanation of the relevant statistical methods.