Abstract
A spherical-deformed shape coexistence for semimagic pf-shell nuclei is investigated. Deformed states can arise by breaking the submagic shell, and coexist with spherical yrast states for These states are shown to be primarily two-particle two-hole excitations on top of the respective correlated ground states. In addition to these modes, a four-particle–four-hole excitation can be found for which is related to the deformed band of doubly magic To investigate this shape coexistence, we use the conventional shell-model diagonalization, constrained Hartree-Fock, generator coordinate, variation-after-projection, and Monte Carlo shell-model methods.
- Received 19 October 2000
DOI:https://doi.org/10.1103/PhysRevC.63.044306
©2001 American Physical Society