E-Books →Renormalized Quantum Field Theory

The aim of the book is to present the main results on renormaliza- tion in a mathematically rigorous and complete way. The first chapter is introductory - it contains all necessary preliminary information on conventional quantum field theory. Renormalization on the level of individual diagrams is considered in Chapter III. The basic tool here is the a-parametric representation for the renormalized Feynman amplitudes .* The latter allows the most adequate approach to problems of convergence, asymptotic behaviour, etc. The a-parametric technique is developed in Chapter II. Sophisticated as it might seem, it supplies a deeper insight into the structure of Feynman diagrams.