Strong Interactions at Low Energy

Abstract

The lectures review some of the basic concepts relevant for an understanding of the low energy properties of the strong interactions: chiral symmetry, spontaneous symmetry breakdown, Goldstone bosons, quark condensate. The effective field theory used to analyze the low energy structure is briefly sketched. As an illustration, I discuss the implications of the recent data on the decay $K\to \pi \pi e\nu$ for the magnitude of the quark condensate.

Lectures given at the school of physics "Understanding the structure of hadrons", Prague, July 2001, 20 pp

References in corpus (3)

• ππscattering
• The quark condensate from K_{e_4} decays
• Quark Masses on the Lattice: Light and Heavy

Cited by in corpus (3)

• Phase diagram and critical properties within an effective model of QCD: the Nambu-Jona-Lasinio model coupled to the Polyakov loop
• An estimate of the chiral condensate from unquenched lattice QCD
• Aspects of QCD Current Algebra on a Null Plane