Power Counting Regime of Chiral Extrapolation and Beyond
High Energy Physics - Lattice
2010-02-17 v1
Abstract
Finite-range regularised (FRR) 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 m_\pi < 180 MeV for the PCR, extending only a small distance beyond the physical pion mass.
Keywords
Cite
@article{arxiv.hep-lat/0510070,
title = {Power Counting Regime of Chiral Extrapolation and Beyond},
author = {Derek B. Leinweber and Anthony W. Thomas and Ross D. Young},
journal= {arXiv preprint arXiv:hep-lat/0510070},
year = {2010}
}
Comments
Lattice 2005 (hadron spectrum and quark masses), 6 pages, 2 figures