An Uqp(u2) Model for Rotational Bands of Nuclei

Abstract

A rotational model is developed from a new version of the two-parameter quantum algebra $U_{qp}({\mathrm{u}}_2)$. This model is applied to the description of some recent experimental data for the rotating superdeformed nuclei ${}^{192-194-196-198}\mathrm{Pb}$ and ${}^{192-194}\mathrm{Hg}$. A comparison between the $U_{qp}({\mathrm{u}}_2)$ model presented here and the Raychev-Roussev-Smirnov model with $U_q({\mathrm{su}}_2)$ symmetry shows the relevance of the introduction of a second parameter of a ``quantum algebra'' type.

Comments: 11 pages, Tex, LYCEN 9348