Three-body contributions to the density-dependent NN-interaction

We study a non-relativistic energy density functional theory to describe nuclear matter, nuclei and hyper-nuclei. The interaction density functionals are derived from Brueckner G-matrix calculation for the baryon-baryon in-medium forces from which we extract density dependent interaction vertices. The realistic description of the nuclear EOS requires additional density dependent three-body interactions which are shown to act predominantly as additional density dependent vertex corrections. The momentum dependence of self-energies and their modifications by the three-body terms are investigated. Results for the EOS of symmetric and asymmetric nuclear matter are discussed.