TIME-DEPENDENT DENSITY FUNCTIONAL THEORY WITHSKYRMEFORCES : DESCRIPTION OF GIANT RESONANCES IN DEFORMED NUCLEI

摘要

The isovector giant dipole resonance (GDR) in deformed nuclei ~(154)Sm and ~(238)U is described within the self-consistent separable RPA (randomphaseapproximation) with Skyrme forces SkT6, SkM*, SLy6 and SkI3. We examine dependence of the description on the Skyrme force and grossstructure effects, as well as influence of the Coulomb interaction, multipole mixing, and time-odd densities. The results are analyzed in terms of isovector characteristics of the nuclear matter. It is shown that GDR in deformed nuclei can serve as a robust test for Skyrme forces with different effective masses. The best description of the resonance is obtained for the SLy6 force.