Relativistic nuclear energy density functionals: Adjusting parameters to binding energies

By Tamara Niksic, D. Vretenar, P. Ring. 2008

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We study a particular class of relativistic nuclear energy density functionals in which only nucleon degrees of freedom are explicitly used in the construction of effective interaction terms. Short-distance (high-momentum) correlations, as well as intermediate- and long-range dynamics, are encoded in the medium (nucleon-density) dependence of the strength functionals of an effective interaction Lagrangian. Guided by the density dependence of microscopic nucleon self-energies in nuclear matter, a phenomenological ansatz for the density-dependent coupling functionals is accurately determined in self-consistent mean-field calculations of binding energies of a large set of axially deformed nuclei. The relationship between the nuclear matter volume, surface, and symmetry energies and the corresponding predictions for nuclear masses is analyzed in detail. The resulting best-fit parametrization of the nuclear energy density functional is further tested in calculations of properties of spherical and deformed medium-heavy and heavy nuclei, including binding energies, charge radii, deformation parameters, neutron skin thickness, and excitation energies of giant multipole resonances.

Subfields: Nuclear and High Energy Physics, Spectroscopy

View Paper: https://www.semanticscholar.org/paper/892f3acc5d55b5ba2cc9e2b4a2d251ef04f3b90e

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Citations in the corpus

Future of nuclear fission theory (2020, methodology): “To date, the EDFs most commonly used in fission studies have been adjusted to fission isomer excitation energies (Kortelainen et al 2012) or fission barriers (Bartel et al 1982, Berger et al 1991, Goriely et al 2007), with the exception of the relativistic functionals PC-PK1 (Zhao et al 2010) and DD”