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Christos G.A. — Chiral symmetry and the U(1) problem
Christos G.A. — Chiral symmetry and the U(1) problem



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Название: Chiral symmetry and the U(1) problem

Автор: Christos G.A.

Аннотация:

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 and/or large Nc limits. The $ periodicity puzzle, its solution and the required
spectrum of topological charge are discussed in the framework of chiral perturbation theory. Other aspects of the U(l) problem, such as: the means
by which the /|' obtains its large mass, the details of the required (modified) Kogut-Susskind mechanism, phenomenological applications, effective chiral Lagrangians incorporating effects of the anomaly and proofs of spontaneous chiral symmetry breaking are considered from the viewpoint of the large Nc and topological expansions.


Язык: en

Рубрика: Физика/Квантовая теория поля/Теория калибровочных полей/

Статус предметного указателя: Нет и не будет

ed2k: ed2k stats

Год издания: 1984

Количество страниц: 86

Добавлена в каталог: 14.08.2005

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