Effects of phonon-phonon coupling on low-lying states in neutron-rich Sn isotopes

Abstract

Starting from an effective Skyrme interaction we present a method to take into account the coupling between one- and two-phonon terms in the wave functions of excited states. The approach is a development of a finite rank separable approximation for the quasiparticle RPA calculations proposed in our previous work. The influence of the phonon-phonon coupling on energies and transition probabilities for the low-lying quadrupole and octupole states in the neutron-rich Sn isotopes is studied.

arXiv comment18 pages

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Cited by in corpus (15)

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• Spreading widths of giant resonances in spherical nuclei: damped transient response
• Influence of complex configurations on properties of pygmy dipole resonance in neutron-rich Ca isotopes
• Multi-neutron emission of Cd isotopes
• Effects of phonon-phonon coupling on properties of pygmy resonance in ${}^{124-132}$Sn
• Sensitivity of $\beta$-decay rates to the radial dependence of the nucleon effective mass
• Random matrix analysis of the monopole strength distribution in ${}^{208}$Pb
• Microscopic Description of Isoscalar Giant Monopole Resonance in ${}^{48}$Ca
• Microscopic description of the pygmy dipole resonance in neutron-rich Ca isotopes
• Strength fragmentation of Gamow-Teller transitions and delayed neutron emission of atomic nuclei
• Spreading widths of giant monopole resonance in the lead region: Random matrix approach
• Fine structure of the isoscalar giant monopole resonance in ${}^{48}$Ca