A pr 1 99 6 Model calculations of doubly closed shell nuclei in CBF theory

Model calculations of doubly closed shell nuclei in CBF theory III. j-j coupling and isospin dependence. Abstract Correlated Basis Function theory and Fermi Hypernetted Chain technique are extended to study medium–heavy, doubly closed shell nuclei in j-j coupling scheme, with different single particle wave functions for protons and neutrons and isospin dependent two–body correlations. Central semirealistic interactions are used. Ground state energies, one–body densities, distribution functions and momentum distributions are calculated for 12 C, 16 O, 40 Ca, 48 Ca and 208 Pb nuclei. The values of the ground state energies provided by isospin dependent correlations are lower than those obtained with isospin independent correlations. In finite nuclear systems, the 1 two–body Euler equations provide correlation functions variationally more effective than those obtained with the same technique in infinite nuclear matter.