Numerically Solving Quark-Loop Effects on Dressed Gluon Propagator in Chiral Limit

We do a numerical calculation on the quark-loop effects on the dressedgluon propagator in the chiral limit. It is found that the quark-loopeffects on the dressed gluon propagator are significant in solving thequark propagator in the rainbow approximation of the Dyson-Schwinger equation. The approach we used here is quite general and can also be used to calculate both the chemical potential and current quark mass dependence ofthe dressed gluon propagator.