Baryon chiral perturbation theory

Abstract

We provide an introduction to the power-counting issue in baryon chiral perturbation theory and discuss some recent developments in the manifestly Lorentz-invariant formulation of the one-nucleon sector. As explicit applications we consider the chiral expansion of the nucleon mass, its convergence properties, and calculations of the electromagnetic and axial form factors of the nucleon.

Invited plenary talk given at the 6th International Workshop on Chiral Dynamics, July 6-10, 2009, Bern, Switzerland