The second edition expanded significantly to include modern "hot topics." It covers the essentials—functional integration, mean-field theory, and linear response—but excels in its treatment of:
The second edition, in particular, remains a staple because it bridges the gap between abstract formalism and physical intuition. 1. The Pedagogy: "Concepts First" Condensed Matter Field Theory, Second Edition
To keep the book from being 2,000 pages, some intermediate algebraic steps are left to the reader. You will need a pen and paper nearby. The second edition expanded significantly to include modern