论文标题
核子结构计算中的激发态
Excited states in nucleon structure calculations
论文作者
论文摘要
激发的状态贡献代表了晶格QCD中强元结构计算的巨大挑战。对于出现指数性信号到噪声问题的物理系统，它们通常会阻碍地基矩阵元素的提取，从而在此类数量的晶格计算中引入了主要的系统误差来源。审查了治疗激发态贡献和相关晶格研究的当前状态的方法的开发，重点是臭名昭著地受到激发态污染影响的核子结构计算。
Excited state contributions represent a formidable challenge for hadron structure calculations in lattice QCD. For physical systems that exhibit an exponential signal-to-noise problem they often hinder the extraction of ground state matrix elements, introducing a major source of systematic error in lattice calculations of such quantities. The development of methods to treat the contribution of excited states and the current status of related lattice studies are reviewed with focus on nucleon structure calculations that are notoriously affected by excited state contamination.
