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t lnstitut fiir Theoretische Phydk, University of Tobingen. D-7400 Tiibingen, Federal Republic of Germany Received I July 1993Abstrad. A modilied quarkquark interaction is applied to study lhe nucleon-nucleon interaction. The quark potential is suggested by inslanton models and includes pion (n) and sigma ( 0 ) exchanges as non-perturbative components and the one-gluon exchange as a pemrbative one. The nucleon-nucleon potential derived from this model presents short-range repulsion and mediun-range attraction besides the usual pion tail. Using this interaction the nucleon-nucleon phase shifts within the resonating group method have been olculated. They agree reasonably well with experimental values.

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