Gamow-Teller response and its spreading mechanism in doubly magic nuclei

Abstract

The scope of the paper is to apply a state-of-the-art beyond mean-field model to the description of the Gamow-Teller response in atomic nuclei. This topic recently attracted considerable renewed interest, due, in particular, to the possibility of performing experiments in unstable nuclei. We study the cases of ${}^{48}$Ca, ${}^{78}$Ni, ${}^{132}$Sn and ${}^{208}$Pb. Our model is based on a fully self-consistent Skyrme Hartree-Fock plus random phase approximation. The same Skyrme interaction is used to calculate the coupling between particles and vibrations, which leads to the mixing of the Gamow-Teller resonance with a set of doorway states and to its fragmentation. We compare our results with available experimental data. The microscopic coupling mechanism is also discussed in some detail.

arXiv comment27 pages, 10 figures

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Cited by in corpus (26)

• Time-dependent density-functional description of nuclear dynamics
• Nuclear Equation of State from ground and collective excited state properties of nuclei
• The neutron skin thickness from the measured electric dipole polarizability in ${}^{68}$Ni, ${}^{120}$Sn, and ${}^{208}$Pb
• Particle-vibration coupling effect on the $\beta$-decay of magic nuclei
• Beyond-mean-field approaches for nuclear neutrinoless double beta decay in the standard mechanism
• Nuclear response theory for spin-isospin excitations in a relativistic quasiparticle-phonon coupling framework
• Gamow-Teller strength in ${}^{48}$Ca and ${}^{78}$Ni with the charge-exchange subtracted second random-phase approximation
• Isospin splitting of nucleon effective mass from giant resonances in ${}^{208}$Pb
• Quasi-particle random phase approximation with quasi-particle-vibration coupling: application to the Gamow-Teller response of the superfluid nucleus ${}^{120}$Sn
• Toward an accurate strongly-coupled many-body theory within the equation of motion framework
• The mutable nature of particle-core excitations with spin in the one-valence-proton nucleus 133Sb
• Nuclear response theory with multiphonon coupling in a covariant framework
• Towards a self-consistent dynamical nuclear model
• Impact of complex many-body correlations on electron capture in thermally excited nuclei around ${}^{78}$Ni
• Nuclear charge-exchange excitations based on relativistic density-dependent point-coupling model
• Pion-nucleon correlations in finite nuclei in a relativistic framework: effects on the shell structure
• Quenching of Gamow-Teller strengths and two particle -- two hole configurations
• Estimation of 2p2h effect on Gamow-Teller transition with Second Tamm-Dancoff-Approximation
• Comparative analysis of formalisms and performances of three different beyond mean-field approaches
• Two-neutrino double-beta decay matrix elements based on relativistic nuclear energy density functional
• Learning the structure of giant resonances from their $\gamma$-decay
• $\beta$-decay half-lives as an indicator of shape-phase transition in neutron-rich Zr isotopes with particle-vibration coupling effect
• Tensor-force effects on shell-structure evolution in $N=82$ isotones and $Z=50$ isotopes in the relativistic Hartree-Fock theory
• Theoretical investigation of two-particle two-hole effect on spin-isospin excitations through charge-exchange reactions
• Calculations for nuclear matter and finite nuclei within and beyond energy--density--functional theories through interactions guided by effective field theory
• Competition of deformation and neutron-proton pairing in Gamow-Teller transitions for ${}^{56,58}$Ni and ${}^{62,64}$Ni