Microscopic, nonharmonic description of rotations and pairing vibrations in deformedpf-shell nuclei

Abstract

Angular-momentum- and particle-number-projected self-consistent Hartree-Bogoliubov wave functions are used within the generator-coordinate method for the description of excited states in ${}_{}{}^{48}{}_{}{}^{}\mathrm{Ti}$ and ${}_{}{}^{56}{}_{}{}^{}\mathrm{Fe}$. Bands based on the ground state and first pairing-vibrational state respectively are studied. In the ground band of ${}_{}{}^{56}{}_{}{}^{}\mathrm{Fe}$ an antipairing effect occurs parallel with an increase of correlations in the excited band, so that for higher $J$ the ground band becomes less paired than the excited one.