The projected Hartree-Fock spectra from a realistic two-body interaction

The projection method is used to obtain good angular momentum and good isospin states from the intrinsic Hartree-Fock states of the nuclei in the 2s-1d shell. An effective interaction derived from the Yale potential has been employed in the calculations. It is found that the static magnetic moments are predicted correctly. The static quadrupole moments and the lifetimes of the nuclear states for electric quadrupole transitions are predicted correctly if an effective charge of 0.5 e is ascribed to the neutrons. The projected energy spectra in even-mass nuclei are very much compressed as compared to the experimental spectra. The agreement between the projected and the experimental spectra in odd-mass nuclei is not so bad.