  New parameter-sets of the semi-realistic nucleon-nucleon interaction are
developed, by modifying the M3Y interaction but maintaining the tensor channels
and the longest-range central channels. The modification is made so as to
reproduce microscopic results of neutron-matter energies, in addition to the
measured binding energies of doubly magic nuclei including $^{100}$Sn and the
even-odd mass differences of the Z=50 and N=82 nuclei in the self-consistent
mean-field calculations. Separation energies of the proton- or neutron-magic
nuclei are shown to be in fair agreement with the experimental data. With the
new parameter-sets M3Y-P6 and P7, the isotropic spin-saturated symmetric
nuclear matter remains stable in the density range as wide as $\rho\lesssim
6\rho_0$, while keeping desirable results of the previous parameter-set on
finite nuclei. Isotope shifts of the Pb nuclei and tensor-force effects on
shell structure are discussed.

Nuclear Theory