%0 Journal Article
%T Two-Nucleon Spectral Function in Infinite Nuclear Matter
%A Omar Benhar
%A Adelchi Fabrocini
%J Physics
%D 1999
%I arXiv
%R 10.1103/PhysRevC.62.034304
%X The two-nucleon spectral function in nuclear matter is studied using Correlated Basis Function perturbation theory, including central and tensor correlations produceded by a realistic hamiltonian. The factorization property of the two-nucleon momentum distribution into the product of the two single nucleon distributions shows up in an analogous property of the spectral function. The correlated model yields a two-hole contribution quenched whith respect to Fermi gas model, while the peaks acquire a quasiparticle width that vanishes as the two momenta approach $k_F$. In addition, three-hole one-particle and more complicated intermediate states give rise to a background, spread out in energy and absent in the uncorrelated models. The possible connections with one- and two-nucleon emission processes are briefly discussed.
%U http://arxiv.org/abs/nucl-th/9909014v1