Bulletin of the American Physical Society
6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Sunday–Friday, November 26–December 1 2023; Hawaii, the Big Island
Session F13: Nuclear Theory II
9:00 AM–11:15 AM,
Thursday, November 30, 2023
Hilton Waikoloa Village
Room: Kona 2-3
Chair: Gregory Potel, Lawrence Livermore Natl Lab
Abstract: F13.00006 : Anchor-based optimization of energy density functionals*
10:15 AM–10:30 AM
Presenter:
Anatoli Afanasjev
(Mississippi State University)
Authors:
Anatoli Afanasjev
(Mississippi State University)
Ahmad Taninah
(Mississippi State University)
Udeshika C Perera
(Mississippi State University)
Saja Teeti
(Mississippi State University)
Bernard Osei
(Mississippi State University)
is proposed in [1]. In this approach, the optimization of the parameters of EDF is carried out for
the selected set of spherical anchor nuclei the physical observables of which are modified by
the correction function which takes into account the global performance of EDF. It is shown
that the use of this approach leads to a substantial improvement in global description of binding
energies for several classes of covariant EDFs. For example, the root-mean square deviations
between calculated and experimental binding energies decreases for covariant EDFs with density
dependence of meson exchange from around 2.5 MeV to 1.6 MeV at the mean field level. The
computational cost of defining a new functional within this approach is drastically lower as compared
with the one which includes the global experimental data on spherical, transitional and deformed
nuclei into the fitting protocol and employes computer codes for deformed nuclei in the optimization.
Additional studies of this approach are in progress and the results will be presented and published [2].
*This material is based upon work supported by the U.S.Department of Energy, Office of Science, Office of NuclearPhysics under Award No. DE-SC0013037.
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