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Schwinger Action Principle and Effective Action

Name: Schwinger Action Principle and Effective Action
Brand: Cambridge University Press
SKU: 02051568
Price: 98.71 EUR
Availability: InStock
Author: David J. Toms
ISBN: 9781107406308

David J. Toms

Language

English

Book Paperback

Libristo code: 02051568

Publishers Cambridge University Press, August 2012

This book, first published in 2007, is an introduction to the Schwinger action principle in quantum... Full description

Libristo code: 02051568

240 b

98.71 €

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This book, first published in 2007, is an introduction to the Schwinger action principle in quantum mechanics and quantum field theory, with applications to a variety of different models including Bose–Einstein condensation, the Casimir effect and trapped Fermi gases. The book begins with a brief review of the action principle in classical mechanics and classical field theory. It then moves on to quantum field theory, focusing on the effective action method. This is introduced as simply as possible by using the zero-point energy of the simple harmonic oscillator as the starting point. The book concludes with a more complete definition of the effective action, and demonstrates how the provisional definition used earlier is the first term in the systematic loop expansion. The renormalization of interacting scalar field theory is presented to two-loop order. This book will interest graduate students and researchers in theoretical physics who are familiar with quantum mechanics.