a Quark-Model NN Interaction and its Application to the Three-Nucleon and Nuclear-Matter Problems

Baryon-baryon interactions of the complete baryon octet (B₈) are investigated in a unified framework of the (3q)-(3q) resonating-group method, which employs the spin-flavor SU₆ quark-model wave functions. Model parameters are determined to reproduce properties of the nucleon-nucleon system and the low-energy cross section data for the hyperon-nucleon interaction. Some characteristic features of the B₈B₈ interactions predicted by the most recent model fss2 are discussed. The nucleon-nucleon sector of this quark-model potential is used to calculate G-matrices for nuclear and neutron matter, and to solve the Faddeev equation of the three-nucleon bound state. The calculated binding energy for ³H is the closest to the experiment among many results obtained by detailed Faddeev calculations employing modern realistic nucleon-nucleon potentials.