Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2008-11-10
Phys.Rev.C79:054312,2009
Physics
Nuclear Physics
Nuclear Theory
28 pages, 13 figures
Scientific paper
10.1103/PhysRevC.79.054312
Theoretical studies of low-lying dipole strength in even-even spherical nuclei within the relativistic quasiparticle time blocking approximation (RQTBA) are presented. The RQTBA developed recently as an extension of the self-consistent relativistic quasiparticle random phase approximation (RQRPA) enables one to investigate effects of coupling of two-quasiparticle excitations to collective vibrations within a fully consistent calculation scheme based on covariant energy density functional theory. Dipole spectra of even-even $^{130}$Sn -- $^{140}$Sn and $^{68}$Ni -- $^{78}$Ni isotopes calculated within both RQRPA and RQTBA show two well separated collective structures: the higher-lying giant dipole resonance (GDR) and the lower-lying pygmy dipole resonance (PDR) which can be identified by a different behavior of the transition densities of states in these regions.
Langanke Karlheinz
Litvinova Elena
Ring Peter
Tselyaev Victor
No associations
LandOfFree
Relativistic quasiparticle time blocking approximation. II. Pygmy dipole resonance in neutron-rich nuclei does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Relativistic quasiparticle time blocking approximation. II. Pygmy dipole resonance in neutron-rich nuclei, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Relativistic quasiparticle time blocking approximation. II. Pygmy dipole resonance in neutron-rich nuclei will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-724605