DSEs, the pion, and related matters

Abstract

We recapitulate on aspects of Dyson-Schwinger equation studies relevant to pseudoscalar mesons: lattice confirmation of the DSE prediction that propagators are nonperturbatively dressed in the infrared; and exact results, e.g., in the chiral limit the leptonic decay constant vanishes for every pseudoscalar meson except the pion.

Comments: 8 pages; LaTeX2e; contribution to proceedings of "2nd International Conference on Nuclear and Particle Physics with CEBAF at JLab," Dubrovnik, Croatia, 26-31 May, 2003