HAL : in2p3-00000432, version 1
 arXiv : nucl-th/9501027
 International Journal of Modern Physics E 4 (1995) 385-410
 An $U_{qp}(u_2)$ Rotor Model for Rotational Bands of Superdeformed Nuclei
 R. Barbier1, J. Meyer1, M. Kibler1
 (1995)
 A nonrigid rotor model is developed from the two-parameter quantum algebra $U_{qp}({\rm u}_2)$. [This model presents the $U_{qp}({\rm u}_2)$ symmetry and shall be referred to as the qp-rotor model.] A rotational energy formula as well as a qp-deformation of E2 reduced transition probabilities are derived. The qp-rotor model is applied (through fitting procedures) to twenty rotational bands of superdeformed nuclei in the $A \sim 130$, 150 and 190 mass regions. Systematic comparisons between the qp-rotor model and the q-rotor model of Raychev, Roussev and Smirnov, on one hand, and a basic three-parameter model, on the other hand, are performed on energy spectra, on dynamical moments of inertia and on B(E2) values. The physical signification of the deformation parameters q and p is discussed.
 Thème(s) : Mathématiques/Algèbres quantiquesPhysique/Physique Nucléaire Théorique
 Lien vers le texte intégral : http://fr.arXiv.org/abs/nucl-th/9501027
 in2p3-00000432, version 1 http://hal.in2p3.fr/in2p3-00000432 oai:hal.in2p3.fr:in2p3-00000432 Contributeur : Sylvie Florès <> Soumis le : Jeudi 23 Novembre 2006, 11:11:52 Dernière modification le : Jeudi 23 Novembre 2006, 11:38:18