Critique of a pion exchange model for interquark forces - art. no. 054026

I describe four serious defects of a widely discussed pion exchange model f or interquark forces: it does not solve the ''spin-orbit problem'' as adver tised, it fails to describe the internal structure of baryon resonances, it leads to disastrous conclusions when extended to mesons, and it is not rea sonably connected to the physics of heavy-light systems. While extensions o f the original pion exchange model may be able to correct these defects, th is catalogue of criticisms defines some of the most formidable problems suc h elaborations must address.