DENSITY DEPENDENT MESON NUCLEON COUPLINGS FOR NUCLEAR MATTER AND FINITE NUCLEI

摘要

The medium dependence of nuclear interactions is described by an effective Lagrangian characterized by density dependent meson nucleon couplings. The density dependence of the coupling parameters of the σ, ω, δ, and ρ mesons is deduced by reproducing the nucleon self-energy resulting from the relativistic Brueckner-Hartree-Fock approach at each density for symmetric and asymmetric nuclear matter. The inclusion of the density dependent isovector mesons couplings, δ and ρ, affects the density and charge distributions of finite nuclei. The results are discussed and compared with experimental data and with results from similar approaches.