Wilsonian Renormalization Group In The Functional Nonperturbative Approach
arXiv:2003.00373
Abstract
We consider a functional relation between a given Wilsonian RG flow, which has to be related to a specific coarse-graining procedure, and an infinite family of (UV cutoff) scale dependent field redefinitions. Within this framework one can define a family of Wilsonian proper-time exact RG equations associated to an arbitrary regulator function. New applications of these RG flow schemes to the Ising Universality class in three dimensions in the derivative expansion are shortly illustrated.
14 pages, 1 figure, contribution to the XXVth edition of the conference in Vietri "PAFT 2019, Current problems in theoretical physics", to appear on the International Journal of Geometric Methods in Modern Physics