MODEL-CALCULATIONS OF DOUBLY CLOSED-SHELL NUCLEI IN CBF THEORY .2. ONE-BODY DENSITY-MATRIX AND MOMENTUM DISTRIBUTION

The one body density matrix and the momentum distribution of N = Z nuc lei are computed using correlated basis function theory and Fermi hype rnetted chain theory. The results obtained with central nucleon-nucleo n interactions are presented and the effects of the scalar internucleo n correlations are enlightened. A version of the local density approxi mation for the one body density matrix, that takes particular care of the dynamical correlations, is studied. Its effectiveness is checked a gainst correlated basis function calculations in model nuclei. The app roximation is used to evaluate the momentum distribution in realistic models of nuclei.