Origins of the baryon spectrum

I begin with a key problem of light and strange baryon spectroscopy which s uggests a clue for our understanding of underlying dynamics. Then I discuss spontaneous breaking of chiral symmetry in QCD, which implies that at low momenta there must be quasiparticles - constituent quarks with dynamical ma ss, which should be coupled to other quasiparticles - Goldstone bosons. The n it is natural to assume that in the low-energy regime the underlying dyna mics in baryons is due to Goldstone boson exchange (GBE) between constituen t quarks. Using as a prototype of the microscopical quark-gluon degrees of freedom the instanton-induced 't Hooft interaction I show why the GEE is so important. When the 't Hooft interaction is iterated in the qq t-channel i t inevitably leads to a pole which corresponds to GEE. This is a typical an tiscreening behavior: the interaction is represented by a bare vertex at la rge momenta, but it blows up at small momenta in the channel with GEE quant um numbers, explaining thus a distinguished role of the latter interaction in the low-energy regime. I show how the explicitly flavour-dependent short -range part of the GEE interaction between quarks, perhaps in combination w ith the vector-meson exchange interaction, solves a key problem of baryon s pectroscopy and present spectra obtained in a simple analytical calculation as well as in exact semirelativistic three-body approach.