An exact renormalization group approach to frustrated magnets

Abstract

Frustrated magnets are a notorious example where usual perturbative methods fail. Having recourse to an exact renormalization group approach, one gets a coherent picture of the physics of Heisenberg frustrated magnets everywhere between d=2 and d=4: all known perturbative results are recovered in a single framework, their apparent conflict is explained while the description of the phase transition in d=3 is found to be in good agreement with the experimental context.

4 pages, Latex, invited talk at the Second Conference on the Exact Renormalization Group, Rome, September 2000, for technical details see http://www.lpthe.jussieu.fr/~tissier