https://doi.org/10.1140/epja/i2019-12764-8
Regular Article - Theoretical Physics
Monopole moments and the 
-vibration in deformed nuclei
Department of Physics and Institute of Nuclear Theory, University of Washington, Box 351560, 98915, Seattle, WA, USA
* e-mail: bertsch@uw.edu
Received:
15
April
2019
Accepted:
29
April
2019
Published online:
4
December
2019
I revisit the theory of the -vibration in deformed nuclei focusing on the transition matrix elements to the ground band. The relation between monopole and quadrupole matrix elements is derived from an incompressibility assumption and is validated by self-consistent mean-field theory with several energy density functionals. With estimates of the deformation-dependent mean-field potential energy function, it is found that the excited 
band in 156Gd comes fairly close to meeting the criteria to be classified as a -vibration.
© Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature, 2019
