Nuclear landscape in covariant density functional theory

Abstract

The neutron and proton driplines represent the limits of the nuclear landscape. While the proton dripline is measured experimentally up to rather high Z values, the location of the neutron dripline for absolute majority of elements is based on theoretical predictions which involve extreme extrapolations. The first ever systematic investigation of the location of the proton and neutron driplines in the covariant density functional theory has been performed by employing a set of the state-of-the-art parametrizations.Calculated theoretical uncertainties in the position of two-neutron dripline are compared with those obtained in non-relativistic DFT calculations.Shell effects drastically affect the shape of two-neutron dripline. In particular, model uncertainties in the definition of two-neutron dripline at Z_s13_s178764_s1954, N=126 and Z_s13_s178764_s1982, N=184 are very small due to the impact of spherical shell closures at N=126 and 184.