I am trying to read Fradkin's book "Field Theories of Condensed Matter Physics" but I am finding it to be a bit hard to follow at some places. In particular, I find that Fradkin sometimes throws some formulas out of nowhere and while I can work through most of them, some are too difficult for me to understand/derive. I was thus wondering what books would you recommend as a supplement to it.
I know of Altland and Simon's "Condensed Matter Field Theory" and Shankar's "Quantum Field Theory and COndensed Matter Physics" but the former is as advanced as Fradkin's book (from a first impression--but I could be wrong) and the latter is way simpler than Fradkin's book.
Any recommendations are appreciated.
EDIT: The things that I mostly want to cover from Fradkin's book is sigma models, topological terms, topological phases, gauge theories in condensed matter, quantum hall effects from the perspective of field theory, quantum entanglement. I need a book that implements the theory of Lie groups/algebras and representations to make things more formal (but a book written for physicists). Obviously, the supplementary book need not include all these topics.
