Johan Bijnens
Chiral Perturbation Theory and Mesons


The talk contains a short introduction to mesonic Chiral Perturbation Theory (ChPT). In addition four disparate areas where some progress has been made in recent years are discussed. These are the last fit of the order $p^4$ low-energy-constants $L_i^r$ to data, hard pion ChPT, the recent two-loop work on EFT for QCD like theories and the high order leading logarithm calculationsin the massive $O(N)$ nonlinear sigma model.

LU TP 13-03