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

Abstract

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.

Authors:
 [1];  [2];  [2]
  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)
Publication Date:
OSTI Identifier:
22492465
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1681; Journal Issue: 1; Conference: Nuclear Structure and Dynamics '15: 3. international nuclear physics conference on nuclear structure and dynamics, Portoroz (Slovenia), 14-19 Jun 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Roca-Maza, X., E-mail: xavier.roca.maza@mi.infn.it, Istituto Nazionale di Fisica Nucleare, Colò, G., Istituto Nazionale di Fisica Nucleare, Kavli Institute for Theoretical Physics China, CAS, Beijing 100190, Cao, Li-Gang, School of Mathematics and Physics, North China Electric Power University, Beijing 102206, State Key Laboratory of Theoretical Physics, ITP, Chinese Academy of Sciences, Beijing 100190, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, Sagawa, H., Center for Mathematics and Physics, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8580, and RIKEN, Nishina Center, Wako, 351-0198. A new Skyrme energy density functional for a better description of spin-isospin resonances. United States: N. p., 2015. Web. doi:10.1063/1.4932265.
Roca-Maza, X., E-mail: xavier.roca.maza@mi.infn.it, Istituto Nazionale di Fisica Nucleare, Colò, G., Istituto Nazionale di Fisica Nucleare, Kavli Institute for Theoretical Physics China, CAS, Beijing 100190, Cao, Li-Gang, School of Mathematics and Physics, North China Electric Power University, Beijing 102206, State Key Laboratory of Theoretical Physics, ITP, Chinese Academy of Sciences, Beijing 100190, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, Sagawa, H., Center for Mathematics and Physics, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8580, & RIKEN, Nishina Center, Wako, 351-0198. A new Skyrme energy density functional for a better description of spin-isospin resonances. United States. doi:10.1063/1.4932265.
Roca-Maza, X., E-mail: xavier.roca.maza@mi.infn.it, Istituto Nazionale di Fisica Nucleare, Colò, G., Istituto Nazionale di Fisica Nucleare, Kavli Institute for Theoretical Physics China, CAS, Beijing 100190, Cao, Li-Gang, School of Mathematics and Physics, North China Electric Power University, Beijing 102206, State Key Laboratory of Theoretical Physics, ITP, Chinese Academy of Sciences, Beijing 100190, National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000, Sagawa, H., Center for Mathematics and Physics, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8580, and RIKEN, Nishina Center, Wako, 351-0198. Thu . "A new Skyrme energy density functional for a better description of spin-isospin resonances". United States. doi:10.1063/1.4932265.
@article{osti_22492465,
title = {A new Skyrme energy density functional for a better description of spin-isospin resonances},
author = {Roca-Maza, X., E-mail: xavier.roca.maza@mi.infn.it and Istituto Nazionale di Fisica Nucleare and Colò, G. and Istituto Nazionale di Fisica Nucleare and Kavli Institute for Theoretical Physics China, CAS, Beijing 100190 and Cao, Li-Gang and School of Mathematics and Physics, North China Electric Power University, Beijing 102206 and State Key Laboratory of Theoretical Physics, ITP, Chinese Academy of Sciences, Beijing 100190 and National Laboratory of Heavy Ion Accelerator of Lanzhou, Lanzhou 730000 and Sagawa, H. and Center for Mathematics and Physics, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8580 and RIKEN, Nishina Center, Wako, 351-0198},
abstractNote = {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.},
doi = {10.1063/1.4932265},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1681,
place = {United States},
year = {2015},
month = {10}
}