Chapter 3. Perturbation Theory and Evaluation of the S-Matrix

  1. Mike Guidry

Published Online: 29 DEC 2007

DOI: 10.1002/9783527617357.ch3

Gauge Field Theories: An Introduction with Applications

Gauge Field Theories: An Introduction with Applications

How to Cite

Guidry, M. (2007) Perturbation Theory and Evaluation of the S-Matrix, in Gauge Field Theories: An Introduction with Applications, Wiley-VCH Verlag GmbH, Weinheim, Germany. doi: 10.1002/9783527617357.ch3

Author Information

  1. Department of Physics University of Tennessee Knoxville, Tennessee and Oak Ridge National Laboratory Oak Ridge, Tennessee

Publication History

  1. Published Online: 29 DEC 2007
  2. Published Print: 28 OCT 1991

ISBN Information

Print ISBN: 9780471631170

Online ISBN: 9783527617357

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Keywords:

  • physical observables;
  • quantum field theory;
  • expansion methods;
  • S-matrix elements;
  • vectors

Summary

This chapter contains sections titled:

  • Interaction Representation

  • Definition of the S-Matrix

  • Interaction Picture Fourier Expansions

  • Reduction by Wick's Theorem

  • Example: Self-coupled Scalar Field

  • Differential Cross Sections

  • Example: Spinor Electrodynamics

  • Graphs That Are Excluded

  • Feynman Rules for Electrodynamics

  • Background and Further Reading