Ground-state properties of nuclear matter using theΛapproximations of the Green’s function theory

The nuclear matter parameters and single-particle properties are calculated in the so-called Λ⁽⁰⁰⁾, Λ⁽¹⁰⁾, and Λ⁽¹¹⁾ approximation of the Green's function theory. For the nucleon-nucleon interaction we used the Hamada-Johnston, the Reid-soft-core, and the Paris potential. The results show no significant differences with those obtained from the Brueckner theory. For comparison we used also the Galitskii approximation.