Another walk through the world of chiral dynamics

Abstract

Chiral dynamics is a pretty mature field. Nonetheless, there are many exciting new developments. In this opening talk, I consider S-wave, isospin-zero pion-pion scattering and the calculation of the width of the lightest baryon resonances at two loops. New insights into the chiral dynamics of charm-strange mesons are discussed as well as recent results on the flavor decomposition of the pion-nucleon $\sigma$-term. I end with a short wish-list of lattice QCD tests pertinent to chiral dynamics.