Off-shell property of the NN interaction in the six-quark resonating group model

The off-shell property of the NN interaction in the quark resonating-group model in the region of strognly overlapping quark clusters and not in the region of meson exchange are determined. Two problems are arized: the nonorthogonality of channel spaces, the unitarity transformations ambiguity of function bases. The conclusion is made, that the quark resonating-group model in its present form predicts the off-shell property of the NN interaction at very short distances. This off-shell property is charaterized by a repulsive soft core. Single channel results and coupled channel results agree with each other after orthogonalization of channel spaces. the unitarity transformations aither introduce three-body forces of of unacceptable strength or they have only minor effect on the nuclear wave function