Isospin-symmetry breaking in masses of N ≃ Z nuclei
Ba̧czyk, P., Dobaczewski, J., Konieczka, M., Satuła, W., Nakatsukasa, T., & Sato, K. (2018). Isospin-symmetry breaking in masses of N ≃ Z nuclei. Physics Letters B, 778, 178-183. https://doi.org/10.1016/j.physletb.2017.12.068
Published inPhysics Letters B
© 2018 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license. Funded by SCOAP3.
Effects of the isospin-symmetry breaking (ISB) beyond mean-field Coulomb terms are systematically studied in nuclear masses near the N = Z line. The Coulomb exchange contributions are calculated exactly. We use extended Skyrme energy density functionals (EDFs) with proton–neutron-mixed densities, to which we add new terms breaking the isospin symmetry. Two parameters associated with the new terms are determined by fitting mirror and triplet displacement energies (MDEs and TDEs) of isospin multiplets. The new EDFs reproduce MDEs for the T = 1 2 doublets and T = 1 triplets, and TDEs for the T = 1 triplets. Relative strengths of the obtained isospin-symmetry-breaking terms are not consistent with the differences in the N N scattering lengths, ann, app , and anp. Based on low-energy experimental data, it seems thus impossible to delineate the strong-force ISB effects from beyond-mean-field Coulomb-energy corrections.
ISSN Search the Publication Forum0370-2693
Publication in research information system
MetadataShow full item record
Except where otherwise noted, this item's license is described as © 2018 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license. Funded by SCOAP3.
Showing items with similar title or keywords.
Impact of the surface energy coefficient on the deformation properties of atomic nuclei as predicted by Skyrme energy density functionals Ryssens, W.; Bender, M.; Bennaceur, Karim; Heenen, P.-H.; Meyer, J. (American Physical Society, 2019)Background: In the framework of nuclear energy density functional (EDF) methods, many nuclear phenomena are related to the deformation of intrinsic states. Their accurate modeling relies on the correct description of the ...
Mirror and triplet displacement energies within nuclear DFT: Numerical stability Baczyk, P.; Dobaczewski, Jacek; Konieczka, M.; Nakatsukasa, T.; Sato, K.; Satula, W. (Jagellonian University, 2017)Isospin-symmetry-violating class II and III contact terms are introduced into the Skyrme energy density functional to account for charge dependence of the strong nuclear interaction. The two new coupling constants ...
Model nuclear energy density functionals derived from ab initio calculations Salvioni, G.; Dobaczewski, J.; Barbieri, C.; Carlsson, G.; Idini, A.; Pastore, A. (Institute of Physics, 2020)We present the first application of a new approach, proposed in (2016J.Phys.G:Nucl.Part.Phys.4304LT01) to derive coupling constants of the Skyrme energy density functional (EDF) fromab initioHamiltonian. By perturbing theab ...
Towards a novel energy density functional for beyond-mean-field calculations with pairing and deformation Haverinen, Tiia; Kortelainen, Markus; Dobaczewski, J.; Bennaceur, K. (Jagellonian University, 2019)We take an additional step towards the optimization of the novel finite-range pseudopotential at a constrained Hartree–Fock–Bogolyubov level and implement an optimization procedure within an axial code using harmonic ...
Mean-Field Calculation Based on Proton-Neutron Mixed Energy Density Functionals Sato, Koichi; Dobaczewski, Jacek; Nakatsukasa, Takashi; Satuła, Wojciech (Physical Society of Japan, 2015)We have performed calculations based on the Skyrme energy density functional (EDF) that includes arbitrary mixing between protons and neutrons. In this framework, single-particle states are generalized as mixtures of ...