Introduction to Quantum Field Theory  book cover
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Introduction to Quantum Field Theory




ISBN 9789056992378
Published November 16, 2000 by CRC Press
456 Pages

 
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Book Description

This text explains the features of quantum and statistical field systems that result from their field-theoretic nature and are common to different physical contexts. It supplies the practical tools for carrying out calculations and discusses the meaning of the results. The central concept is that of effective action (or free energy), and the main technical tool is the path integral, although other formalisms are also mentioned. The author emphasizes the simplest models first, then progresses to discussions of real systems before addressing more general and rigorous conclusions. The book is structured around carefully selected problems, which are solved in detail.

Table of Contents

PART ONE: The Path Integral in Quantum Mechanics: Action in Classical Mechanics. The Path Integral in Quantum Mechanics. The Euclidean Path Integral. PART TWO: Introduction to Quantum Field Theory. Classical and Quantum Fields. Vacuum Energy in n4 Theory. Renormalization of the Effective Action. Renormalization Group. Concluding Remarks. PART THREE: More Complex Fields and Objects: From Particles to Fields: Path Integral Fermions. Gauge Fields. Topological Objects. Some Integrals and Products. Splitting of Levels in Double-Well Potential. Lie Algebra

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