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

  • A. P. Severyukhin
  • V. V. VoronovEmail author
  • Nguyen Van Giai
Article

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.

PACS.

21.60.Jz Hartree-Fock and random-phase approximations 24.30.Cz Giant resonances 27.30.+t 20 ⩽ A ⩽ 38 27.40.+z 39 ⩽ A ⩽ 58 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2004

Authors and Affiliations

  • A. P. Severyukhin
    • 1
  • V. V. Voronov
    • 1
    Email author
  • Nguyen Van Giai
    • 2
  1. 1.Bogoliubov Laboratory of Theoretical PhysicsJoint Institute for Nuclear ResearchDubnaRussia
  2. 2.CNRS-IN2P3, Université Paris-SudInstitut de Physique NucléaireOrsay CedexFrance

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