Nuclear Matter Properties for Nonstatic One-Boson-Exchange Potential with Retardation

Abstract

Nuclear matter properties are evaluated using our nonstatic OBEP. The binding energy of nuclear matter is calculated to the first-order reaction ~atrix G. As the nucleon-nucleon interaction, four kinds. of potentials are considered that reprodu~e approximately equivalent phase shift, but differ from each other in the core potential (static Gaussian or velocity' dependent) and in the retarded effect (included or not). Our OBEP including retardation gives -12 MeV in binding energy at a saturation density kF=l.5 fm- 1 • The retarded effect of the OBEP is appreciable on the off-energy-shell G-matrices, and decreases simultaneously 2.0~2.5 MeV in the binding energy and ~0.05 fm- 1 (in Fermi momentum) in the density. The relativistic correction to the Bethe-Goldstone equation tends to increase the binding and the density. The defect wave function and wound integral for each potential case are examined· in detail.