Estimating the chiral-symmetryrestoration temperature in two-flavor QCD

Abstract
We combine measurements of the chiral-symmetryrestoration transition temperature and hadron masses in lattice QCD with two flavors of light quarks to estimate the transition temperature in megaelectronvolts. We compare this estimate to results of ‘‘quenched’’ QCD to estimate the effects of our large lattice spacing on the results. We find that the dynamical quarks lower the temperature of the phase transition relative to the pure gauge theory.