Quantum Chromodynamics, Quark Confinement, and Chiral Symmetry Breaking: A Bridge Between Elementary Particle Physics and Nuclear Physics
Quantum Chromodynamics, Quark Confinement, and Chiral Symmetry Breaking: A Bridge Between Elementary Particle Physics and Nuclear Physics
复制标题
量子色动力学、夸克禁闭和手性对称破缺：基本粒子物理和核物理之间的桥梁
DOI：
10.1007/978-981-15-8818-1_22-1
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Suganuma Hideo
中科院分区：
文献类型：
--
作者：
Ryotaro Kase;Shinji Tsujikawa;Suganuma Hideo
量子色动力学（QCD）是强相互作用的基本理论，它被描述为夸克和胶子的SU（Nc）规范理论。尽管QCD作用的形式很简单，但QCD本身就创造了各种有趣的物理现象和数千种不同的强子。在这一章中，在对QCD物理作了简要的概述之后，我们回顾了非微扰QCD的两个重要性质，即色禁闭和自发手征对称性破缺，包括它们的基础和最新进展。本文用强相互作用的第一性原理计算方法--格点QCD，从夸克间势的角度研究了各种强子中的夸克禁闭。因此，通量管（或弦）图像被发现是广泛适用于夸克禁闭在介子，重子和多夸克强子在QCD。本章还涉及相关的有趣的话题，如QCD和夸克模型之间的可能联系，禁闭机制的双超导图片，夸克禁闭和手征对称性破缺之间的关系。
Quantum chromodynamics (QCD) is the fundamental theory of the strong interaction, and it is described as an SU(Nc) gauge theory of quarks and gluons. In spite of the simple form of QCD action, QCD alone creates various interesting physical phenomena and thousands of different hadrons. In this chapter, after a brief overview of QCD physics, two important properties of nonperturbative QCD, that is, color confinement and spontaneous chiral symmetry breaking, are reviewed, including both the basics and recent progress. Quark confinement in various hadrons is investigated in terms of inter-quark potentials, using lattice QCD, the first-principles calculation of the strong interaction. As a result, the flux-tube (or string) picture is found to be widely applicable to quark confinement in mesons, baryons, and multi-quark hadrons in QCD. This chapter also deals with related interesting topics, such as a possible connection between QCD and the quark model, the dual superconductor picture for the confinement mechanism, and the relation between quark confinement and chiral symmetry breaking.