Paul Urban Facts and Prospects of Gauge Theories 9783709185407

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Автор: Paul Urban
Название: Facts and Prospects of Gauge Theories
ISBN: 9783709185407
Издательство: Springer
Классификация:

Атомная и молекулярная физика

Ядерная физика

Квантовая физика (квантовая механика и квантовая теория поля)

ISBN-10: 3709185408
Обложка/Формат: Soft cover
Страницы: 890
Вес: 1.52 кг.
Дата издания: 25.01.2012
Серия: Few-Body Systems
Язык: English
Издание: Softcover reprint of
Иллюстрации: Biography
Размер: 244 x 170 x 45
Читательская аудитория: Professional & vocational
Основная тема: Elementary Particles, Quantum Field Theory
Подзаголовок: Proceedings of the XVII. Internationale Universit?tswochen f?r Kernphysik 1978 der Karl-Franzens-Universit?t Graz at Schladming (Steiermark, Austria), 21st February - 3rd March 1978
Ссылка на Издательство: Link
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Поставляется из: Германии
Описание: These lectures concern the properties of topological charge in gauge theories and the physical effects which have been attributed to its existence. No introduction to this subject would be adequate without a discussion of the original work of Belavin, Polyakov, Schwarz, and Tyupkin 1], of the beautiful calculation by t Hooft 2,3], and of the occurrence of 8-vacua 4-6]. Other important topics include recent progress on solutions of the Yang-Mills equation of motion 7,8], and the problem of parity and time-reversal invariance in strong interactions 9] (axions 10,11], etc. ). In a few places, I have strayed from the conventional line and in one important case, disagreed with it. The im- portant remark concerns the connection between chirality and topological charge first pointed out by t Hooft 2]: in the literature, the rule is repeatedly quoted with the wrong sign If QS is the generator for Abelian chiral transformations of massless quarks with N flavours, the correct form of the rule is Qs = - 2N {topological charge} (1. 1) where QS means the out eigenvalue of QS minus the in eigenvalue. The sign can be checked by consulting the standard WKB calculation 2,3], rotating to Minkowski space, and observing that the sum of right-handed chiralities of operators in a Greens function equals - QS. The wrong sign is an automatie consequence of a standard but incorrect derivation in which the axial charge is misidentified.

Facts and Prospects of Gauge Theories, Paul Urban