Can a quark shell model lead to nucleon clusters?

The six-quark deuteron system is examined within the framework of the Bonn quark shell model to see whether this model can lead to a quark density distribution indicative of two spatially separated three-quark clusters. The deuteron ground state always leads to a quark density distribution with a central maximum. The configuration mixing of the model does not furnish the needed strong spatial correlation into three-quark clusters. (orig.)