A new Skyrme functional including tensor terms is presented. The tensor terms have been determined by fitting the results of relativistic Brueckner-Hartree-Fock (RBHF) studies on neutron-proton drops. Unlike all previous studies, where the tensor terms were usually determined by fitting to experimental data of single-particle levels, the pseudodata calculated by RBHF does not contain beyond mean-field effect such as the particle-vibration coupling and, therefore, can provide information on the tensor term without ambiguities. The obtained new functional, named SAMi-T, can describe well ground-state properties such as binding energies, radii, spin-orbit splittings and, at the same time, the excited state properties such as those of the Giant Monopole Resonance (GMR), Giant Dipole Resonance (GDR), Gamow-Teller Resonance (GTR), and Spin-Dipole Resonance (SDR).

Skyrme functional with tensor terms from ab initio calculations: Results for the spin-orbit splittings / S. Shen, G. Colo', X. Roca-Maza (ACTA PHYSICA POLONICA. B, PROCEEDINGS SUPPLEMENT). - In: Structure and Dynamics of Atomic Nuclei[s.l] : Jagiellonian University, 2019. - pp. 699-704 (( Intervento presentato al 25. convegno Nuclear Physics Workshop “Marie and Pierre Curie” : September, 25 - 30 tenutosi a Kazimierz Dolny nel 2018 [10.5506/APhysPolBSupp.12.699].

Skyrme functional with tensor terms from ab initio calculations: Results for the spin-orbit splittings

S. Shen
Primo
;
G. Colo'
Penultimo
;
X. Roca-Maza
Ultimo
2019

Abstract

A new Skyrme functional including tensor terms is presented. The tensor terms have been determined by fitting the results of relativistic Brueckner-Hartree-Fock (RBHF) studies on neutron-proton drops. Unlike all previous studies, where the tensor terms were usually determined by fitting to experimental data of single-particle levels, the pseudodata calculated by RBHF does not contain beyond mean-field effect such as the particle-vibration coupling and, therefore, can provide information on the tensor term without ambiguities. The obtained new functional, named SAMi-T, can describe well ground-state properties such as binding energies, radii, spin-orbit splittings and, at the same time, the excited state properties such as those of the Giant Monopole Resonance (GMR), Giant Dipole Resonance (GDR), Gamow-Teller Resonance (GTR), and Spin-Dipole Resonance (SDR).
Settore FIS/04 - Fisica Nucleare e Subnucleare
2019
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/1049768
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