The Schwinger Action Principle and Effective Action

By:

David J. Toms

Format:

Hardback

Series:

Cambridge Monographs on Mathematical Physics

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Description

This book 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.

Author Biography:

David Toms is Reader in Mathematical Physics in the School of Mathematics and Statistics at Newcastle University. Prior to joining Newcastle University, Dr Toms was a NATO Science Fellow at Imperial College London, and a postdoctoral fellow at the University of Wisconsin-Milwaukee. His research interests include the formalism of quantum field theory and its applications, and his most recent interests are centred around Kaluza-Klein theory, based on the idea that there are extra spatial dimensions beyond the three obvious ones.

Release date Australia

November 15th, 2007

Author

David J. Toms

Audience

Professional & Vocational

Pages

508

Series

Cambridge Monographs on Mathematical Physics

Dimensions

170x244x29

ISBN-13

9780521876766

Product ID

1973590

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