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arXiv · 1903.01585

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

V. Tselyaev·N. Lyutorovich·J. Speth·P. -G. Reinhard·D. Smirnov
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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.

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V. Tselyaev, N. Lyutorovich, J. Speth, P. -G. Reinhard, D. Smirnov. 2019-03-04. Low-energy M1 excitations in $^{208}$Pb and the spin channel of the Skyrme energy-density functional. https://doi.org/10.1103/physrevc.99.064329

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