Speaker
Polytimos Vasileiou
(Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH))
Description
Following a number of successful applications to the neighboring rare-earth isotopic chains, this work employs an IBM-1 Hamiltonian derived from self-consistent mean-field calculations, incorporating intrinsic triaxial deformation obtained from fermionic proxy-SU(3) irreducible representations (irreps), to investigate energy spectra and B(E2) transition strengths in the low-lying quadrupole bands of even-even $^{162-182}$Yb isotopes. For the first time, proxy-SU(3) next-highest-weight irreps are included in the calculations, resulting in substantially better agreement with available experimental data compared both to axially symmetric calculations and to triaxial calculations that include only highest-weight irreps.
Author
Polytimos Vasileiou
(Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH))
Co-authors
Dr
Dennis Bonatsos
(Institute of Nuclear and Particle Physics, National Centre for Scientific Research "Demokritos")
Prof.
Theo J. Merzimekis
(National and Kapodistrian University of Athens)