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Beyond-mean-field dynamical correlations for nuclear mass table in deformed relativistic Hartree-Bogoliubov theory in continuum


 We extend the deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc) to go beyond-mean-field framework by performing a two-dimensional collective Hamiltonian. The influences of dynamical correlations on the ground-state properties are examined in different mass regions picking Se, Nd, and Th isotopic chains as representatives. It is found that the dynamical correlation energies (DCEs) and the rotational correction energies E
 rot in cranking approximation have almost equivalent effect on the description of binding energies for most of deformed nuclei, and the DCEs can give a significant improvement for the (near) spherical nuclei close to the neutron shells and thus reduce the rms deviations of S
 2n by ≈17%. Furthermore, it is found that the DCEs are quite sensitive to the pairing correlations; taking 148Nd as an example, a 10% enhancement of pairing strength can rise DCE by ≈37%.