The 10th International Workshop on Chiral Dynamics

In the framework of a two-loop order calculation for an effective field theory of scalar, vector and fermion fields interacting with the metric field we show that for the cosmological constant term which is fixed by the condition of vanishing vacuum energy, the graviton remains massless and there exists a self-consistent effective field theory of general relativity defined on a flat Minkowski background. Next, using this result we address the issues of fine tuning of the strong interaction contribution to the vacuum energy and the compatibility of chiral symmetry in the light quark sector with the consistency of the effective field theory of general relativity in a flat Minkovski background.