A new Skyrme interaction with improved spin-isospin properties

Abstract

A correct determination of the spin-isospin properties of the nuclear effective interaction should lead, among other improvements, to an accurate description of the Gamow-Teller Resonance (GTR). These nuclear excitations impact on a variety of physical processes: from the response in charge-exchange reactions of nuclei naturally present in the Earth, to the description of the stellar nucleosynthesis, and of the pre-supernova explosion core-collapse evolution of massive stars in the Universe. A reliable description of the GTR provides also stringent tests for neutrinoless double-$\beta$ decay calculations. We present a new Skyrme interaction as accurate as previous forces in the description of finite nuclei and of uniform matter properties around saturation density, and that account well for the GTR in ${}^{48}$Ca, ${}^{90}$Zr and ${}^{208}$Pb, the Isobaric Analog Resonance and the Spin Dipole Resonance in ${}^{90}$Zr and ${}^{208}$Pb.

Predictions on the IAR and SDR and comparison with the SGII interaction for the GTRs where added

References in corpus (12)

• Double Beta Decay, Majorana Neutrinos, and Neutrino Mass
• Nuclear symmetry energy probed by neutron skin thickness of nuclei
• Exotic modes of excitation in atomic nuclei far from stability
• The Skyrme Interaction in finite nuclei and nuclear matter
• Neutron skin of 208Pb, nuclear symmetry energy, and the parity radius experiment
• The Giant Dipole Resonance as a quantitative constraint on the symmetry energy
• Neutron skin thickness in droplet model with surface width dependence: indications of softness of the nuclear symmetry energy
• Spin-isospin resonances: A self-consistent covariant description
• Spin-orbit and tensor mean-field effects on spin-orbit splitting including self-consistent core polarizations
• Collectivity-induced quenching of signatures for shell closures
• Global study of the spectroscopic properties of the first 2+ state in even-even nuclei
• Neutron Skin Thickness of 90Zr Determined By Charge Exchange Reactions

Cited by in corpus (1)

• Giant Quadrupole Resonances in 208Pb, the nuclear symmetry energy and the neutron skin thickness