Properties of confining gauge field configurations in the pseudoparticle approach

Abstract

The pseudoparticle approach is a numerical method to approximate path integrals in SU(2) Yang-Mills theory. Path integrals are computed by summing over all gauge field configurations, which can be represented by a linear superposition of a small number of pseudoparticles with amplitudes and color orientations as degrees of freedom. By comparing different pseudoparticle ensembles we determine properties of confining gauge field configurations. Our results indicate the importance of long range interactions between pseudoparticles and of non trivial topological properties.

Talk given at Quark Confinement and the Hadron Spectrum VII, Ponta Delgada, Azores, 2-7 September 2006; 4 pages, 2 figures; the following article has been submitted to QCHS VII proceedings; after it is published, it will be found at http://proceedings.aip.org/proceedings/