The important configurations in six-quark N-N states

We present an analysis of six-quark basis states constructed from molecular-type single-particle orbitals. In the present work, we employ a nonrelativistic constituent quark model with one-gluon exchange approximated by a spin-spin interaction. The orbitals are constructed from appropriate combinations of two-center Gaussians. The calculations are performed in the limit of zero separation and is deemed relevant to short distances. We study the contributions of configurations which are natural in the molecular basis but had been neglected previously in cluster model calculations. We find a dramatic lowering of the energy due to these configurations.