FIZIKA B 13 (2004)  1, 143-152

DYSON-SCHWINGER EQUATIONS, THE PION AND RELATED MATTERS

ANDREAS KRASSNIGG^a and CRAIG D. ROBERTS^a,b

^aPhysics Division, Argonne National Laboratory, Argonne IL 60439, USA
^bFachbereich Physik, Universität Rostock, D-18051 Rostock, Germany

Received 13 August 2003;   Accepted 26 April 2004
Online 10 October 2004

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

PACS numbers: 12.38.Aw, 14.40.Aq, 14.65.-q, 24.85.+p
UDC 539.12

Keywords: dynamical chiral symmetry breaking, Dyson-Schwinger equations, pion properties

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