Dual Lattice Blockspin Transformation and Perfect Monopole Action for Su(2) Gauge Theory

Abstract

Recent studies of confinement based on the idea of abelian monopole condensation are reviewed briefly. Emphasis is placed on the approach to get the effective monoole action using the blockspin transformation on the dual lattice. The trajectory obtained looks to be the renormalized one in SU (2) QCD. A disorder parameter of confinement is constructed. Monopole condensation occurs also in SU (3) QCD.