Abstract
The interplay between quadrupole and octupole degrees of freedom is discussed in a series of neutron-rich actinides and superheavy nuclei with and . In addition to the static Hartree-Fock-Bogoliubov approach, dynamical beyond-mean-field correlations are taken into account via both parity restoration and symmetry-conserving generator coordinate method calculations based on the Gogny-D1M energy density functional. Physical properties such as correlation energies, negative-parity excitation energies, as well as reduced transition probabilities and are discussed in detail. It is shown that, for the studied nuclei, the quadrupole-octupole coupling is weak and to a large extent the properties of negative-parity states can be reasonably well described in terms of the octupole degree of freedom alone.
6 More- Received 23 January 2021
- Accepted 22 March 2021
DOI:https://doi.org/10.1103/PhysRevC.103.044301
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