Extracting the effective Polyakov line action from SU(2) and SU(3) lattice gauge theories

Abstract

We describe the "relative weights" method used to compute the effective Polyakov line action corresponding to a given lattice gauge theory, and present some results that have been obtained so far. The main motivation is the sign problem, which may be easier to address in the effective theory than in the underlying gauge theory.

Comments: 10 pages, 7 figures. Presented at the QCD TNT-3 meeting, 2-6 Sept. 2013, Trento, Italy