CONSISTENT CONSTRUCTION OF REALISTIC ONE-BODY DENSITY-MATRIX IN NUCLEI

A phenomenological method based on the natural orbital representation is applied to construct the ground-state one-body density matrix which describes correctly both density and momentum distributions in He-4, O-16 and Ca-40 nuclei. The parameters of the matrix are fixed by a bes t fit to the experimental density distribution and to the correlated n ucleon momentum distribution. The method allows the natural orbitals, the occupation probabilities and the depletion of the Fermi sea to be obtained. Ground-state characteristics of 4He, O-16 and Ca-40 nuclei, such as rms radii and mean kinetic energies are calculated, as well.