Introduction to the Functional Renormalization Group

From the reviews:

“The authors of this textbook provide a comprehensive introduction to the method, including its foundation in the renormalization group … . an excellent introduction to the method, recommendable to anyone who is looking for a powerful method to deal with non-perturbative (and perturbative) problems in the continuum. The introduction is lucid and quite accessible. The book is definitely recommended for anyone interested in such an approach. … it would serve well as a basis for an introductory course for advanced graduate and Ph.D. students.” (Axel Maas, Mathematical Reviews, Issue 2011 h)