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The effect of a microscopic three-body force on the saturation properties of nuclear matter is studied within the Brueckner-Hartree-Fock approach. The calculations show a decisive improvement of the saturation density along with an overall agreement with the empirical saturation point. With the three-body force the symmetry energy turns more rapidly increasing with density, which allows for the direct...
The Brueckner-Hartree-Fock approximation extended to include ground-state correlations is applied to neutron matter. Single-particle properties are calculated including neutron mean field, effective mass and mean free path. The main result is a pronounced enhancement of the effective mass at the Fermi surface whose influence on neutron star properties is discussed.
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