Equation of state for pure SU(3) gauge theory with renormalization group improved action

Abstract

A lattice study of the equation of state for pure SU(3) gauge theory using a renormalization-group (RG) improved action is presented. The energy density and pressure are calculated on a (Formula presented) and a (Formula presented) lattice employing the integral method. Extrapolating the results to the continuum limit, we find the energy density and pressure to be in good agreement with those obtained with the standard plaquette action within the error of 3–4 %. © 1999 The American Physical Society.