Microscopic description of quadrupole-octupole coupling in neutron-rich actinides and superheavy nuclei with the Gogny-D1M energy density functional

The interplay between quadrupole and octupole degrees of freedom is discussed in a series neutron-rich actinides superheavy nuclei with $92 \le$ Z $\le 110$ $186 N 202$. In addition to the static Hartree-Fock-Bogoliubov approach, dynamical beyond-mean-field correlations are taken into account via both parity restoration symmetry-conserving Generator Coordinate Method calculations based on Gogny-D1M energy density functional. Physical properties such as correlation energies, negative-parity excitation energies well reduced transition probabilities $B(E1)$ $B(E3)$ detail. It shown that, for studied nuclei, quadrupole-octupole coupling weak large extent negative states can be reasonably described terms degree alone.