  A new linked cluster expansion for the calculation of ground state
observables of complex nuclei with realistic interactions has been developed
[1-3]; using the V8' potential [4] the ground state energy, density and
momentum distribution of complex nuclei have been calculated and found to be in
good agreement with the results of [5], obtained within the Fermi Hyper Netted
Chain, and Variational Monte Carlo [6] approaches. Using the same cluster
expansion, with wave function and correlations Realistic Calculation of the
Effects of Nucleon-Nucleon Correlations in High-Energy Scattering Processes Off
Nuclei parameters fixed from the calculation of the ground-state observables,
the semi-inclusive reaction of type A(e,e'p)X has been calculated taking final
state interaction effects into account within a Glauber type calculation as in
Ref. [7]; the comparison between the resulting distorted and undistorted
momentum distributions provides an estimate of the transparency of the nuclear
medium to the propagation of the hit proton. The effect of color transparency
has also been considered within the approach of [8,9]; it is shown that at high
values of Q^2 finite formation time effects strongly reduce the final state
interaction, consistently with the idea of a reduced interaction of the hadron
produced inside the nucleus [10]. The total neutron-nucleus cross section at
high energies has also been calculated [11] by considering the effects of
nucleon-nucleon correlations, which are found to increase the cross section by
about 10% in disagreement with the experimental data. The inclusion of
inelastic shadowing effects of Refs. [12,13] decreases back the cross section,
leading to a good agreement between experimental data and theoretical
calculations.
