Self-consistent calculations within the Extended Theory of Finite Fermi Systems

Abstract

The Extended Theory of Finite Fermi Systems(ETFFS) describes nuclear excitations considering phonons and pairing degrees of freedom, using experimental single particle energies and the effective Landau-Migdal interaction. Here we use the Skyrme interactions in order to extend the range of applicability of the ETFFS to experimentally not yet investigated short-lived isotopes. We find that Skyrme interactions which reproduce at the mean field level both ground state properties and nuclear excitations are able to describe the spreading widths of the giant resonances in the new approach, but produce shifts of the centroid energies. A renormalization of the Skyrme interactions is required for approaches going beyond the mean field level.

7 pages, 5 figures, corrected typos

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Cited by in corpus (8)

• Relativistic quasiparticle time blocking approximation. Dipole response of open-shell nuclei
• Self-consistent calculations of the strength function and radiative neutron capture cross section for stable and unstable tin isotopes
• Self-consistent calculations of the electric giant dipole resonances in light and heavy mass nuclei
• Self-consistent calculations of quadrupole moments of the first 2+ states in Sn and Pb isotopes
• Interaction of the single-particle and collective degrees of freedom in non-magic nuclei: the role of phonon tadpole terms
• Phonon coupling effects in magnetic moments of magic and semi-magic nuclei
• Self-consistent calculations within the Green's function method including particle-phonon coupling and the single-particle continuum
• Impact of the phonon coupling on the dipole strength and radiative neutron capture