论文标题
QCD中的拓扑和斧头
Topology and axions in QCD
论文作者
论文摘要
QCD轴处于QCD拓扑和暗物质搜索的十字路口。我们在这里介绍了拓扑研究在晶格上的现状，及其对轴突物理的影响。我们概述了晶格拓扑提出的具体挑战，即处理它们的不同建议，拓扑对QCD光谱的可观察效应及其与手性和轴向对称性的相互关系。我们回顾了向夸克gluon等离子体的过渡，过渡时拓扑的命运以及对高温极限的方法。我们讨论了达到宇宙学相关性和对QCD轴上的限制所需的外推。
QCD axions are at the crossroads of QCD topology and Dark Matter searches. We present here the current status of topological studies on the lattice, and their implication on axion physics. We outline the specific challenges posed by lattice topology, the different proposals for handling them, the observable effects of topology on the QCD spectrum and its interrelation with chiral and axial symmetries. We review the transition to the Quark Gluon Plasma, the fate of topology at the transition, and the approach to the high temperature limit. We discuss the extrapolations needed to reach the regime of cosmological relevance, and the resulting constraints on the QCD axion.
