From PCM to KDV and Back
arXiv:hep-th/0103250
Abstract
This is a summary of progress made in understanding the occurrence and properties of local, conserved, commuting charges in non-linear sigma-models, including principal chiral models (PCMs) and WZW models. (Contribution to the NATO-ASI meeting: Integrable Hierarchies and Modern Physical Theories, University of Illinois at Chicago, July 2000.)
2 pages; plain TeX