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Triaxial shape fluctuations and quasiparticle excitations in heavy nuclei

Fang-Qi Chen and J. Luis Egido
Phys. Rev. C 95, 024307 – Published 7 February 2017

Abstract

The deformation parameters (β,γ) together with two-quasiparticle excitations are taken into account, for the first time, as coordinates within a symmetry conserving (angular momentum and particle number) generator coordinate method. The simultaneous consideration of collective as well as single-particle degrees of freedom allows us to describe soft and rigid nuclei as well as the transition region in between. We apply the new theory to the study of the spectra and transition probabilities of the Er156172 isotopes with a pairing-plus-quadrupole residual interaction. Good agreement with the experimental results is obtained for most of the observables studied and with the same quality for the very soft and the strongly deformed nuclei.

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  • Received 20 October 2016
  • Revised 7 December 2016

DOI:https://doi.org/10.1103/PhysRevC.95.024307

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

Fang-Qi Chen* and J. Luis Egido

  • Departamento de Física Teórica, Universidad Autónoma de Madrid, E-28049 Madrid, Spain

  • *Present address: State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China.
  • j.luis.egido@uam.es

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Issue

Vol. 95, Iss. 2 — February 2017

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