Generator coordinate calculations of nucleon momentum and density distributions in4He,16O and40Ca

Abstract

An approach within the generator coordinate method with square-well construction potential and Skyrme-like forces, recently proposed and applied to calculate the nucleon momentum and density distributions as well as energies and r.m.s. radii of the ground and first monopole excited states of4He and16O, is extended to the case of40Ca. The nucleon momentum and the density distributions have a correct behaviour which is related to the account of both monople vibrations and short-range\({\mathcal{N}} - {\mathcal{N}}\) correlations. The results are compared with the predictions of other theoretical correlation methods and with experimental data for the nucleon momentum distribution of4He up to momenta ≈3 fm−1 now available.