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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.
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Submitted on : Tuesday, February 1, 2005 - 4:47:39 PM
Last modification on : Wednesday, September 16, 2020 - 4:07:26 PM

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A. P. Severyukhin, V. V. Voronov, Nguyen van Giai. Effects of phonon-phonon coupling on low-lying states in neutron-rich Sn isotopes. European Physical Journal A, EDP Sciences, 2004, 22, pp.397-403. ⟨10.1140/epja/i2004-10048-2⟩. ⟨in2p3-00023698⟩

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