Abstract
Finite-range regularized chiral effective field theory is presented in the context of approximation schemes ubiquitous in modern lattice QCD calculations. Using FRR techniques, the power-counting regime (PCR) of chiral perturbation theory can be estimated. To fourth-order in the expansion at the 1% tolerance level, we find 0 {le} m{sub {pi}} {le} 180 MeV for the PCR, extending only a small distance beyond the physical pion mass.
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