Curing O(a) Errors in 3-D Lattice SU(2) x U(1) Higgs Theory

Abstract

We show how to make O(a) corrections in the bare parameters of 3-D lattice SU(2) times U(1) Higgs theory which remove O(a) errors in the match between the infrared behavior and the infrared behavior of the continuum theory. The corrections substantially improve the convergence of lattice data to a small a limit.

Comments: 33 pages with figures (uses psfig). Corrects an algebraic error in the gauge field self-energy calculation which changes the result for the gauge field renormalization at the 15 % level