2017/04/26 by E. McRae, C. Simenel, McRae, E. +5
Engineering · Physics and Astronomy · #FOS: Physical sciences #Nuclear Theory (nucl-th) #Nuclear physics research studies #Quantum, superfluid, helium dynamics #Superconducting Materials and Applications #nucl-th
paper · pdf · doi:10.48550/arxiv.1704.07991
11 pages, 10 figures
arxiv created 2017/04/26 · openalex publication_date 2017/04/26 · arxiv updated 2017/04/27 · openalex created_date 2017/05/12 · openalex updated_date 2026/07/28
Background: The Skyrme energy density functional is widely used in mean-field calculations of nuclear structure and dynamics. However, its reliance on phenomenology may compromise its isovector properties and its performance for exotic nuclear systems. Purpose: This work investigates the possibility of removing some phenomenology from the density functional by drawing on the high-energy degrees-of-freedom of the quark-meson coupling (QMC) model. The QMC model has microscopically derived isovector properties and far fewer adjustable parameters. Method: The parameters of the Skyrme interaction are fixed using the energy density functional of the QMC model, to give the Skyrme-QMC (SQMC) parameterisation. Results: Hartree-Fock-Bogoliubov calculations of the Sn, Pb and N=126 chains are reported, in which SQMC performs with an accuracy comparable to modern phenomenological functionals. Conclusions: The isovector terms of the energy density functional are significant for the binding energies of neutron-rich nuclei. The isovector dependence of the nuclear spin-orbit interaction must be taken into account for calculations of r-process nucleosynthesis abundances.