Chiral symmetry and the U(1) problem

Chiral symmetry and the U(1) problem This review gives a detailed account of recent progress in the U(l) problem from the point of view of the anomalous Ward identities and the large Ne expansion. Two important ingredients that go into the formulation of the U(l) problem, chiral symmetry and the QCD anomaly, are extensively discussed. The basic concepts and techniques of chiral symmetry and chiral perturbation theory, as realized in the Gell-Mann-Oakes- Renner scheme, are reviewed. The physical meaning of the anomaly is clarified and its effects are consistently implemented through the anomalous Ward identities. These equations are extensively analysed in the chiral an

Authors: Christos G.A.Pages: 86     Year: 1984

Tags: problem symmetry chiral

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