Quasiparticle random-phase approximation with quasiparticle-vibration coupling: Application to the Gamow-Teller response of the superfluid nucleus $^{120}$Sn

  title={Quasiparticle random-phase approximation with quasiparticle-vibration coupling: Application to the Gamow-Teller response of the superfluid nucleus \$^\{120\}\$Sn},
  author={Yi Fei Niu and Gianluca Col{\`o} and E. Vigezzi and C. L. Bai and Hiroyuki Sagawa},
  journal={Physical Review C},
We propose a self-consistent quasiparticle random-phase approximation (QRPA) plus quasiparticle-vibration coupling (QPVC) model with Skyrme interactions to describe the width and the line shape of giant resonances in open-shell nuclei, in which the effect of superfluidity should be taken into account in both the ground state and the excited states. We apply the new model to the Gamow-Teller resonance in the superfluid nucleus Sn120, including both the isoscalar spin-triplet and the isovector… 
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