Detailed account of important technique for researchers and graduate students working in condensed matter and theoretical physics.

Focusing on the purely theoretical aspects of strongly correlated electrons, this volume brings together a variety of approaches to models of the Hubbard type -

This book is a course in modern quantum field theory as seen through the eyes of a theorist working in condensed matter physics. It contains a gentle introducti

For many years, the physics of strongly correlated systems was considered a theorists' playground, right at the border with pure mathematics, where physicists f

This research monograph offers an introduction to advanced quantum field theoretical techniques for many-particle systems beyond perturbation theory. Several sc