Multi-quark approach to short-range nuclear forces

The short-range NN forces have been discussed on the basis of the resonating-group method. The full Breit Hamiltonian has been used to construct resonating group kernels for the six-quark NN system. The nonlocal kernels have been converted to equivalent local potentials by using the WKB approximation. The resulting potentials for the 1S0 and 3S1 channels have some characteristics of the short-range terms of the Paris potential. The relative importance of the various terms in the Breit interaction is discussed. Resonating group kernels for the nine-quark NNN system are also used to show that the quark structure of nucleons leads to short-range, attractive nonlocal three-body forces