DEPENDENCE OF THE LANDAU PARAMETERS ON THE SINGLE-PARTICLE POTENTIAL

We investigate the relevance of the single particle potential on the t heoretical determination of the Landau parameters within the Brueckner -Bethe-Goldstone theory of symmetric nuclear matter. In particular we study the influence of the choice of the single particle potential on their overall trend as well as the fulfilment of the sum rules. At the two-hole level of approximation the single particle continuous choice and the corresponding effective mass give Landau parameters which bes t satisfy the sum rules. However, the spin-isospin parameter G'0 appea r small in comparison with phenomenology. A good value can be obtained by a slight enhancement of the effective mass, with respect to the Br uechner value, still keeping the other Landau parameters within the ph enomenological boundaries and fulfilling the sum rules fairly well.