2000/07/13 by J. E. García-Ramos, J. E. Garcia-Ramos, J. M. Arias +2 · 1 citation
Physics and Astronomy · #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #Quantum chaos and dynamical systems #nucl-th
paper · pdf · doi:10.1103/physrevc.62.064309
published as Phys.Rev. C62 (2000) 064309 · 38 pages, TeX (ReVTeX). 15 ps figures. Submitted to Phys. Rev. C
arxiv created 2000/07/13 · openalex publication_date 2000/11/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Double\ensuremath-\ensuremathγ vibrations in deformed nuclei are analyzed in the context of the interacting boson model. A simple extension of the original version of the model towards higher-order interactions is required to explain the observed anharmonicities of nuclear vibrations. The influence of three- and four-body interactions on the moments of inertia of ground and \ensuremathγ bands, and on the relative position of single\ensuremath-\ensuremathγ and double\ensuremath-\ensuremathγ bands is studied in detail. As an example of a realistic calculation, spectra and transitions of the highly \ensuremathγ\ensuremath-anharmonic nuclei 164Dy, 166Er, and 168Er are interpreted in this approach.