TL;DR
This paper reviews the fundamental aspects of chiral symmetry in QCD, including its spontaneous breakdown, low-energy theorems, chiral effective Lagrangians, and the impact of anomalies, providing a comprehensive overview of the topic.
Contribution
It offers a detailed overview of chiral symmetry in QCD, highlighting the role of effective Lagrangians and anomalies in understanding low-energy phenomena.
Findings
Chiral symmetry in QCD is spontaneously broken.
Chiral effective Lagrangians are essential for chiral perturbation theory.
Anomalies influence the realization of chiral symmetry.
Abstract
The main aspects of chiral symmetry in QCD are presented. The necessity of its spontaneous breakdown is explained. Some low-energy theorems are reviewed. The role of chiral effective Lagrangians in the formulation and realization of chiral perturbation theory is emphasized. The consequences of the presence of anomalies are sketched.
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