Topology and axions in QCD

M. Lombardo, A. Trunin
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引用次数: 26

Abstract

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.
QCD 中的拓扑和轴子
QCD 轴子是 QCD 拓扑学和暗物质搜索的交叉点。我们在此介绍晶格拓扑研究的现状及其对轴子物理学的影响。我们概述了晶格拓扑学带来的具体挑战、处理这些挑战的不同建议、拓扑学对 QCD 谱的可观测效应及其与手性和轴对称的相互关系。我们回顾了向夸克胶子等离子体的过渡、拓扑在过渡中的命运以及接近高温极限的过程。我们讨论了达到宇宙学相关机制所需的外推,以及由此产生的对 QCD 轴子的约束。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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