Chapter 4. Variational Principles for Off-Shell Amplitudes

  1. Sadhan K. Adhikari

Published Online: 28 JAN 2005

DOI: 10.1002/3527602801.ch4

Variational Principles and the Numerical Solution of Scattering Problems

Variational Principles and the Numerical Solution of Scattering Problems

How to Cite

Adhikari, S. K. (2005) Variational Principles for Off-Shell Amplitudes, in Variational Principles and the Numerical Solution of Scattering Problems, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527602801.ch4

Author Information

  1. Institute of Theoretical Physics, Universidade Estadual Paulista, São Paulo, Brazil

Publication History

  1. Published Online: 28 JAN 2005
  2. Published Print: 11 MAR 1998

ISBN Information

Print ISBN: 9780471181934

Online ISBN: 9783527602803

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Keywords:

  • off-shell amplitudes;
  • Schwinger variational principle;
  • Newton variational principle;
  • iterative variational schemes;
  • Kohn variational principles;
  • insertion techniques;
  • general matrix elements;
  • Γ matrix

Summary

This chapter contains sections titled:

  • Introduction

  • Schwinger Variational Principle

    • Formulation

    • Choice of Basis Functions

    • Application to Nuclear Problems

  • Newton Variational Principle

  • Iterative Variational Schemes

  • Variational Principles of Higher Order

  • Complex and Real Kohn Variational Principles

  • Variational Principles with Distorted Waves

  • Insertion Techniques

  • Variational Principles for General Matrix Elements

  • Variational Principles for the Γ Matrix

  • Anomalous Behavior

    • Anomaly-Free Kohn Method

  • Notes and References