Hadron-hadron interactions from meson exchange

Several recent developments in the meson exchange theory of hadronic interactions are reviewed. After some introductory remarks about the relevance of the meson exchange concept in the era of QCD, a dynamical model for correlated 2π-exchange in the NN as well as πN interaction is described; for the NN system, it should replace the (sharp mass) σ' and ρ exchange used in the Bonn potential. Attention is then paid to the πρ interaction. A recently proposed meson exchange model can resolve in a natural way the apparent discrepancies occurring in the analysis of various experiments in connection with the A1 meson, and leads to an appreciable softening of the πNN form factor. (author) 2 tabs., 23 figs., 41 refs