Gentle introduction to rigorous Renormalization Group: a worked fermionic example
Gentle introduction to rigorous Renormalization Group: a worked fermionic example
Much of our understanding of critical phenomena is based on the notion of Renormalization Group (RG), but the actual determination of its fixed points is usually based on approximations and truncations, and predictions of physical quantities are often of limited accuracy. The RG fixed points can be however given a …