Covariant QCD Modeling of Light Meson Physics
Abstract
We summarize recent progress in soft QCD modeling based on the set of Dyson--Schwinger equations truncated to ladder-rainbow level. This covariant approach to hadron physics accommodates quark confinement and implements the QCD one-loop renormalization group behavior. We compare the dressed quark propagator, pseudoscalar and vector meson masses as a function of quark mass, and the rho -> pi pi coupling to recent lattice-QCD data. The error in the Gell-Mann--Oakes--Renner relation with increasing quark mass is quantified by comparison to the exact pseudoscalar mass relation as evaluated within the ladder-rainbow Dyson-Schwinger model.
Keywords
Cite
@article{arxiv.nucl-th/0301040,
title = {Covariant QCD Modeling of Light Meson Physics},
author = {Peter C. Tandy},
journal= {arXiv preprint arXiv:nucl-th/0301040},
year = {2009}
}
Comments
Presented at the International School on Nuclear Physics, 24th course: Quarks in Nuclei, Erice, Sicily, September 2002; to be published in Prog. Part. Nucl. Phys.; 6 pages, 6 figs