A new Skyrme energy density functional for a better description of spin-isospin resonances

Journal Article · Thu Oct 15 04:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4932265· OSTI ID:22492465

Colò, G. ^[1]; Cao, Li-Gang ^[2]; Sagawa, H. ^[2]

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1. Dipartimento di Fisica, Università degli Studi di Milano, via Celoria 16, 20133 Milano (Italy)
2. Kavli Institute for Theoretical Physics China, CAS, Beijing 100190 (China)

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 {sup 208}Pb [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.

• OSTI ID: 22492465
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1681; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPARATIVE EVALUATIONS
DIPOLES
ENERGY DENSITY
GAMOW-TELLER RULES
INTERACTIONS
ISOSPIN
LEAD 208
MEV RANGE 10-100
NUCLEAR MAGNETIC RESONANCE
SATURATION
SKYRME POTENTIAL
SPIN
SYMMETRY