A New Skyrme Energy Density Functional for a Better Description of Spin-isospin Resonances
A correct determination of the isospin and spin-isospin properties of the nuclear effective interaction should lead to an accurate description of the Gamow-Teller resonance (GT), the Spin Dipole Resonance (SDR), the Giant Dipole Resonance (GDR) or the Antianalog Giant Dipole Resonance (AGDR), among...
| Published in: | AIP Conference Proceedings, |
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| Main Authors: | , , , |
| Format: | Other/Unknown Material |
| Language: | English |
| Published: |
AMER INST PHYSICS
2015
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| Subjects: | |
| Online Access: | http://ir.itp.ac.cn/handle/311006/23583 https://doi.org/10.1063/1.4932265 |
| Summary: | A correct determination of the isospin and spin-isospin properties of the nuclear effective interaction should lead to an accurate description of the Gamow-Teller resonance (GT), the Spin Dipole Resonance (SDR), the Giant Dipole Resonance (GDR) or the Antianalog Giant Dipole Resonance (AGDR), among others. A new Skyrme energy density functional named SAMi is introduced with the aim of going a step forward in setting the bases for a more precise description of spin-isospin resonances [1, 2]. In addition, we will discuss some new features of our analysis on the AGDR in Pb-208 [3] as compared with available experimental data on this resonance [4, 5, 6], and on the GDR [7]. Such study, guided by a simple yet physical pocket formula, has been developed by employing the so called SAMi-J family of systematically varied interactions. This set of interactions is compatible with experimental data for values of the symmetry energy at saturation J and slope parameter L falling in the ranges 31 33 MeV and 75 95 MeV, respectively. |
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