Showing papers by "R. F. Casten published in 2019"
01 Apr 2019
TL;DR: In this article, the shape observables for actinides and superheavy elements, namely β and γ deformation variables, and compare these with predictions by relativistic and non-relativistic mean field theories.
Abstract: Using a new approximate analytic parameter-free proxy-SU(3) scheme, we make predictions of shape observables for actinides and superheavy elements, namely β and γ deformation variables, and compare these with predictions by relativistic and non-relativistic mean-field theories. Furthermore, we make predictions for B ( E 2) transition rates of deformed nuclei and compare these with existing data and predictions of other theoretical approaches.
2 citations
01 Apr 2019
TL;DR: The proxy-SU(3) as mentioned in this paper is a new fermionic approximation of the SU(3 symmetry, which has been used for the description of heavy nuclei in terms of bosons in the framework of the Interacting Boson Approximation.
Abstract: The SU(3) symmetry realized by J. P. Elliott in the sd nuclear shell is destroyed in heavier shells by the strong spin-orbit interaction. However, the SU(3) symmetry has been used for the description of heavy nuclei in terms of bosons in the framework of the Interacting Boson Approximation, as well as in terms of fermions using the pseudo-SU(3) approximation. We introduce a new fermionic approximation, called the proxy-SU(3), and we discuss how some of its novel predictions come out as a consequence of the short range of the nucleon-nucleon interaction and the Pauli principle.
2 citations