A monograph, which can also be used as a textbook for graduate students, this book contains new and novel applications of Schwinger's well-known functional solu

A unified description of the major soluble and approximate models of relativistic quantum field theory, this compact treatment explores functional methods appli

Presenting a variety of topics that are only briefly touched on in other texts, this book provides a thorough introduction to the techniques of field theory. Co

The importance and the beauty of modern quantum field theory resides in the power and variety of its methods and ideas, which find application in domains as dif