ISU - Multigrid for computing propagators

Abstract

The Iteratively Smoothing Unigrid algorithm (ISU), a new multigrid method for computing propagators in Lattice Gauge Theory, is explained. The main idea is to compute good (i.e.\ smooth) interpolation operators in an iterative way. This method shows {\em no critical slowing down} for the 2-dimensional Laplace equation in an SU(2) gauge field. First results for the Dirac-operator are also shown.

Comments: 3 pages, latex, no figures, Contribution to Lattice 94, uses espcrc2.sty and fleqn.sty as required for lattice proceedings