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Jan 1, 2022 at 11:28 comment added Eric Arnéo Vespira Kengne Thanks very much @user1504.
Dec 6, 2010 at 23:56 comment added user1504 The main reference for this stuff is Glimm & Jaffe's book. Get the 2nd edition if you can; a lot of important material appears in the Appendix there. You'll probably also like Battle's 'Wavelets & Renormalization', if you can find it. Rivasseau's writings are also very much worth reading. I'm not sure what you mean by "strongest results" in this context. Maybe Balaban's construction of finite-volume 4d Yang-Mills measure on gauge invariant observables...
Dec 6, 2010 at 23:54 comment added user1504 The theory of renormalization tells you how the lattice actions for different lattices should be related to one another; in particular, it tells you which interactions become stronger and which become weaker as you change the lattice spacing.
Dec 6, 2010 at 22:56 comment added timur Thanks a lot! This is exactly the kind of description I was looking for without explicitly noticing it myself. With MO and the internet the world seems to have became one big math department. A couple of questions: Where does the renormalizability come in this picture? Can you give one reference on one of the simplest nontrivial cases (e.g., two-dimensional QFT) where this programme has been successfully carried out, and one reference on one of the strongest known results in this direction?
Sep 6, 2010 at 8:43 vote accept Florian
Sep 1, 2010 at 21:25 history answered user1504 CC BY-SA 2.5