Nuclear effects on generalized parton distributions of 3He

The relevance of measuring generalized parton distributions (GPDs) of nuclei is stressed and the unique possibilities offered by nuclear few body systems are emphasized. A realistic microscopic calculation of the unpolarized quark GPD H-q(3) of the He-3 nucleus is reviewed. Nuclear effects are found to be larger than in inclusive deep inelastic scattering, flavor dependent, increasing with the momentum transfer and the asymmetry of the process. They also depend on the realistic nuclear potential chosen to estimate them. Besides, it is found that nuclear GPDs cannot be factorized into a Delta(2)-dependent and a Delta(2)-independent term, as suggested in prescriptions proposed for finite nuclei.