Variational approximations to exact solutions in shell-model valence spaces: calcium isotopes in the pf-shell

B. Bally, A. Sánchez-Fernández, T. R. Rodríguez

We study the performance of self-consistent mean-field and beyond-mean-field approximations in shell-model valence spaces. In particular, Hartree-Fock-Bogolyubov, particle-number v…