MICROSCOPIC DESCRIPTION OF THE NUCLEON-DELTA INTERACTION IN THE QUARKCLUSTER MODEL

By using a nonrelativistic quark cluster model to describe baryonic sy stems, we generate a nucleon-Delta potential from the elementary inter action between constituents. The basic quark-quark potential used prov ides, when applied to the nucleon-nucleon system, an adequate descript ion of the scattering phase shifts, the deuteron properties and the no nstrange baryonic spectroscopy. Special attention is paid to the short -range behavior of the interaction and its connection to the quark Pau li principle. This establishes a conceptual difference with meson-exch ange models where the interaction, due to the lack of data, is not eve n well defined.