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5 papers · 2 filters
The fully self-consistent quasiparticle random phase approximation and its application to the isobaric analog resonances
S. Fracasso, G. Colo`
A microscopic model aimed at the description of charge-exchange nuclear excitations along isotopic chains which include open-shell systems, is developed. It consists of quasipartic…
Giant resonances in exotic spherical nuclei within the RPA approach with the Gogny force
S. Péru, J. F. Berger, P. F. Bortignon
Theoretical results for giant resonances in the three doubly magic exotic nuclei Ni, Sn and Sn are obtained from Hartree-Fock (HF) plus Random Phase Approxim…
Sum Rules of the Multiple Giant Dipole States
H. Kurasawa, T. Suzuki, P. F. Bortignon
Various sum rules for multiple giant dipole resonance states are derived. For the triple giant dipole resonance states, the energy-weighted sum of the transition strengths requires…
Attractive and repulsive contributions of medium fluctuations to nuclear superfluidity
G. Gori, F. Ramponi, F. Barranco +4
Oscillations of mainly surface character (S=0 modes) give rise, in atomic nuclei, to an attractive (induced) pairing interaction, while spin (S=1) modes of mainly volume character…
Pairing Matrix Elements and Pairing Gaps with Bare, Effective and Induced Interactions
F. Barranco, P. F. Bortignon, R. A. Broglia +4
The dependence on the single-particle states of the pairing matrix elements of the Gogny force and of the bare low-momentum nucleon-nucleon potential is studied in the…