Low-energy M1 excitations in ${}^{208}$Pb and the spin channel of the Skyrme energy-density functional

Abstract

We investigate the spin dependent part of the Skyrme energy-density functional, in particular its impact on the residual particle-hole interaction in self-consistent calculations of excitations. Test cases are the low-energy M1 excitations in ${}^{208}$Pb treated within the self-consistent random-phase approximation based on the Skyrme energy-density functional. We investigate different parametrizations of the functionals to find out which parameters of the functional have strongest correlations with M1 properties. We explore a simple method of the modification of the spin-related parameters which delivers a better description of M1 excitations while basically maintaining the good description of ground state properties.

15 pages, 7 figures

References in corpus (3)

• A new Skyrme interaction with improved spin-isospin properties
• Skyrme-Rpa Description of Spin-Flip M1 Giant Resonance
• Theoretical mean field and experimental occupation probabilities in the double beta decay system 76Ge to 76Se

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