Running coupling for Wilson bermions

Abstract

A non perturbative finite size scaling technique is used to study a running coupling in lattice Yang-Mills theory coupled to a bosonic Wilson spinor field in the Schrödinger functional scheme. This corresponds to two negative flavours. The scaling behaviour in this case is compared to quenched results and to QCD with two flavours. The continuum limit is confronted with renormalized perturbation theory.

Comments: 7 pages, 3 figures. Talk given at the International Symposium on Lattice Field Theory, June 28--July 3, 1999, in Pisa, Italy