Advanced Quantum Theory

The goal of this textbook is to provide an understanding of the forces of nature in their simplest and most general terms. It begins with a discussion of transformation theory, which is used by the author to formulate advanced quantum theory in group-theoretical language. The second section deals with scattering theory and includes many applications in nuclear, atomic and solid-state physics. Emphasis is placed on relativistic Feynman diagrams. The book concludes with a description of the finite parts of higher-order graphs in field theory and dispersion theory.