N. Paar, P. Papakonstantinou, R. Roth, H. Hergert
Published 2005-11-16Version 1
The fully self-consistent Random Phase Approximation (RPA) is constructed within the Unitary Correlation Operator Method (UCOM), which describes the dominant interaction-induced short-range central and tensor correlations by a unitary transformation. Based on the correlated Argonne V18 interaction, the RPA is employed in studies of multipole response in closed-shell nuclei across the nuclide chart. The UCOM-RPA results in a collective character of giant resonances, and it describes rather well the properties of isoscalar giant monopole resonances. However, the excitation energies of isovector giant dipole resonances and isoscalar giant quadrupole resonances are overestimated due to the missing long-range correlations and three-body contributions.
Comments: 8 pages, 3 figures, submitted to Int. J. Mod. Phys. E, proceedings of the XII Nuclear Physics Workshop Marie and Pierre Curie "Nuclear Structure and Low Energy Reactions", Sept. 21-25, 2005, Kazimierz Dolny, Poland
Journal: Int.J.Mod.Phys. E15 (2006) 346-353
The Unitary Correlation Operator Method from a Similarity Renormalization Group Perspective
Collective excitations in the Unitary Correlation Operator Method and relativistic QRPA studies of exotic nuclei
Nuclear Structure in the Framework of the Unitary Correlation Operator Method
