Relativistic deformed QRPA and its applications.

Covariant density functional theory, in the framework of
self-consistent Relativistic Hartree Bogoliubov (HFB) and Relativistic
Quasiparticle Random Phase approximation (RQRPA), is for the first time applied
to axially deformed nuclei.  The fully self-consistent RHB+RQRPA
equations are posed for the case of axial symmetry and different energy
functionals, and solved with the help of a new parallel code. Sample
applications to M1 and E1 transitions are discussed, in particular the E1
strength is systematically analyzed in very neutron-rich Sn
nuclei, beyond $^{132}$Sn until $^{166}$Sn. The great neutron
excess favors the appearance of a deformed ground state for $^{142-162}$Sn. The
evolution of the low-lying strength in deformed nuclei is discussed, and in
particular its dependence on the interplay of two major and competing factors,
isospin asymmetry and deformation.

Presentation (pdf)

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