Matching current correlators in lattice QCD to chiral perturbation theory
Chiral perturbation theory gives direct and unambiguous predictions for the form of various two-point hadronic correlates at low momentum in terms of a finite set of couplings in a chiral Lagrangian. In this paper we study the feasibility of extracting the couplings in the chiral Lagrangian (through 1-loop order) by fitting two-point correlates computed in lattice QCD to the predicted chiral form.