2001/09/18 by A. Fabrocini, Fabrocini, A.
Engineering · Physics and Astronomy · #FOS: Physical sciences #Nuclear Theory (nucl-th) #Nuclear physics research studies #Particle accelerators and beam dynamics #Scientific Research and Discoveries #nucl-th
paper · pdf · doi:10.48550/arxiv.nucl-th/0109047
17 pages, 3 figures, Proceedings 5th Workshop on "e.-m. induced two-hadron emission", Lund, June 13-16, 2001
arxiv created 2001/09/18 · openalex publication_date 2001/09/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We discuss some single particle properties of 16O and 40Ca using correlated basis function theory and Fermi hypernetted chain equations with central and tensor correlations. In particular, we concentrate on one body density matrix, momentum distribution, natural orbits and quasi hole states. The correlations are variationally generated by a realistic hamiltonian containing the Argonne v'8 two-nucleon and Urbana IX three-nucleon interactions. The correlated momentum distributions show the well known enhancement at large momenta, with a relative importance of the different correlations (Jastrow and tensor) similar to that in nuclear matter. The natural orbits and their occupation numbers are obtained by diagonalization of the density matrix. The correlated first natural orbits occupations are depleted by more than 10%, whereas the first following ones are occupied by a few percent. The spectroscopic factors of the valence states are lowered by ∼ 8-12% with respect to unity by central and tensor correlations, confirming that short range correlations alone are not able to explain the values extracted from (e,e'p) experiments.