QUANTUM ALGEBRAIC DESCRIPTION OF VIBRATIONAL AND TRANSITIONAL NUCLEAR-SPECTRA

A physically motivated extension of the SU(q)(2) model of rotational n uclear spectra is introduced, which is applicable in the vibrational a nd transitional regions as well. The deformation parameter is related to the centrifugal stretching effect, while the new parameter c allows the spectrum to be an expansion in terms of J(J + c) instead of J(J 1), thus describing nuclear anharmonicities in a way similar to the i nteracting boson model and the generalized variable moment of inertia model.