
AN INTRODUCTION TO THE NON PERTURBATIVE RENORMALIZATION GROUPBertrand DelamotteUniversitès Paris VI  Pierre et Marie CurieThe non perturbative renormalization group of Wilson is introduced in the context of (statistical) field theory. We first derive the exact renormalization group equation for the coarse grained free energy. Then, we focus on the para/ferromagnetic phase transition and within the simplest truncation of the exact renormalization group equation we study the critical physics in all dimensions between two and four.See also: B. Delamotte. A hint of renormalization. Am. J. Phys. 72 (2004) 170184. Personal webpage 