Seminarium Fizyki Materii Skondensowanej

The aim of this presentation is to convey the audience to an overview of the Random Field Ising Model (RFIM), a paradigmatic system in the field of statistical mechanics in the presence of quenched disorder. I will first discuss several experimental realizations that were considered in the past. I will then present the remarkable results obtained back in the 70's, in particular the famous dimensional reduction property, discovered by Parisi and Sourlas. I will comment on the controversy that emerged at that time.In the second part of the talk , I will give a summary of the work that I did, in collaboration with G. Tarjus. I will give the main necessary ingredients (functional renormalization-group, nonperturbative renormalization group) and give our main results. For the seminar link contact Pawel Jakubczyk.