Hadron Spectroscopy and Structure from Lattice QCD
Hadron Spectroscopy and Structure from Lattice QCD
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DOI：
10.1007/s00601-022-01764-y
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发表时间：
2022-09
期刊：
影响因子：
1.6
通讯作者：
Huey-Wen Lin
中科院分区：
文献类型：
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作者：
Huey-Wen Lin
格点QCD是一种理论工具，它使我们能够在完全系统控制下直接研究QCD的非微扰区。该方法是基于正则化QCD在一个有限的四维欧几里德时空格点，并经常研究使用数值计算的QCD相关函数的路径积分形式主义，使用国家规模的超级计算机。为了与实验数据相联系，数值结果被外推到连续（具有晶格间距）和无限体积（）极限。当使用比物理质量更大的夸克质量进行计算时（为了节省计算时间），我们也必须接受这个极限。在过去的十年中，有显着的进展，在有效的算法的规范场配置和工具，从格QCD相关函数提取相关信息的生成系综的发展。格子QCD计算已经达到了一个水平，它们不仅补充，而且指导当前和即将到来的实验计划。在这堂课中，我们将简要描述强子光谱学和结构的晶格计算方法。
Lattice QCD is a theoretical tool that allows us to study the nonperturbative regime of QCD directly with full systematic control. The approach is based on regularizing QCD on a finite four-dimensional Euclidean spacetime lattice and is often studied using numerical computations of QCD correlation functions in the path-integral formalism using national-scale supercomputers. To make contact with experimental data, the numerical results are extrapolated to the continuum (with lattice spacing) and infinite-volume () limits. When the calculation is done using heavier-than-physical quark masses (to save computational time), one also has to take thelimit. In the past decade, there has been significant progress in the development of efficient algorithms for the generation of ensembles of gauge-field configurations and tools for extracting relevant information from lattice-QCD correlation functions. Lattice-QCD calculations have reached a level where they not only complement, but also guide current and forthcoming experimental programs. In this lecture, we will briefly describe the methodology of lattice calculations on the topics of hadron spectroscopy and structure.