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

A. P. Severyukhin·V. V. Voronov·Nguyen Van Giai
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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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A. P. Severyukhin, V. V. Voronov, Nguyen Van Giai. 2004-02-26. Effects of phonon-phonon coupling on low-lying states in neutron-rich Sn isotopes. https://doi.org/10.1140/epja%2Fi2004-10048-2

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