Part II describes three methods for QED calculations, a) the standard S-matrix formulation, b) the Two-times Green’s-function method, developed by the St Petersburg Atomic Theory group, and c) the Covariant-evolution operator (CEO) method, recently developed by the Gothenburg Atomic Theory group.
From the Contents: Introduction.- Time-Independent Formalism.- Time-Dependent Formalism.- S-Matrix.- Green's Functions.- Covariant Evolution Operator and Green's Operator.- Numerical Illustrations to Part II.- Covariant Evolution Combined With Electron Correlation.
“The book provides a first-time unified perspective based upon quantum field theory and illustrated with several numerical examples. Many chapters were re-edited, with improved writing from the author’s original text.” (Eric Howard, Contemporary Physics, October, 29, 2018)
