While it is an "introductory" QFT book for condensed matter, it is not "easy."
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: Condensed Matter Field Theory, Second Edition
You need a very strong handle on linear algebra and complex analysis. While it is an "introductory" QFT book for
If you want to understand the why behind terms like "Goldstone modes" or "Effective Field Theory" appearing in papers, the first few chapters are gold. They aren't "plug-and-chug"; they often require you to
The problems at the end of each chapter are excellent but demanding. They aren't "plug-and-chug"; they often require you to derive a seminal result in the field. Who is this for?
The writing is conversational and energetic. The authors often "speak" to the reader, acknowledging when a derivation is tricky or when a particular approximation is a leap of faith. This makes a dense subject feel much more approachable. 4. The "Altland & Simons" Difficulty