It is arguably the best primary textbook for a many-body physics or QFT course.
It allows you to visualize fluctuations and collective modes (like phonons or plasmons) as field configurations rather than just algebraic manipulations. 2. Breadth of Content 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. It is arguably the best primary textbook for
Condensed Matter Field Theory by Alexander Altland and Ben Simons is widely considered the "gold standard" for graduate students and researchers transitioning from introductory many-body physics to the modern language of quantum field theory (QFT). Condensed Matter Field Theory, Second Edition