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The isovector dipole strength in nuclei with extreme neutron excess
Daniel Pena Arteaga, E. Khan, Peter Ring
The E1 strength is systematically analyzed in very neutron-rich Sn nuclei, beyond Sn until Sn, within the Relativistic Quasiparticle Random Phase Approximation. The…
Relativistic Hartree-Fock-Bogoliubov theory with Density Dependent Meson-Nucleon Couplings
Wen Hui Long, Peter Ring, Nguyen Van Giai +1
Relativistic Hartree-Fock-Bogoliubov (RHFB) theory with density-dependent meson-nucleon couplings is presented. The integro-differential RHFB equations are solved by expanding the…
Three-dimensional angular momentum projected relativistic point-coupling approach for the low-lying excited states in Mg
J. M. Yao, J. Meng, D. Pena Arteaga +1
A full three-dimensional angular momentum projection on top of a triaxial relativistic mean-Geld calculation is implemented for the first time. The underlying Lagrangian is a point…
Relativistic quasiparticle time blocking approximation. II. Pygmy dipole resonance in neutron-rich nuclei
E. Litvinova, P. Ring, V. Tselyaev +1
Theoretical studies of low-lying dipole strength in even-even spherical nuclei within the relativistic quasiparticle time blocking approximation (RQTBA) are presented. The RQTBA de…
Relativistic Nuclear Energy Density Functionals: adjusting parameters to binding energies
T. Niksic, D. Vretenar, P. Ring
We study a particular class of relativistic nuclear energy density functionals in which only nucleon degrees of freedom are explicitly used in the construction of effective interac…
Shape coexistence near the neutron number N=20: First identification of the E0 decay from the deformed 0^+_2 state in 30Mg
W. Schwerdtfeger, P. G. Thirolf, K. Wimmer +17
The 1789 keV level in 30Mg was identified as the first excited 0^+ state by measuring its E0 transition to the ground state. The measured small value of rho^2(E0,0^+_2 --> 0^+_1) =…
Deformed relativistic Hartree-Bogoliubov model for exotic nuclei
Shan-Gui Zhou, Jie Meng, Peter Ring
A deformed relativistic Hartree-Bogoliubov (DRHB) model is developed aiming at a proper description of exotic nuclei, particularly deformed ones with large spatial extension. In or…
Finite- to zero-range relativistic mean-field interactions
T. Niksic, D. Vretenar, G. A. Lalazissis +1
We study the relation between the finite-range (meson-exchange) and zero-range (point-coupling) representations of effective nuclear interactions in the relativistic mean-field fra…
Relativistic quasiparticle time blocking approximation. Dipole response of open-shell nuclei
E. Litvinova, P. Ring, V. Tselyaev
The self-consistent Relativistic Quasiparticle Random Phase Approximation (RQRPA) is extended by the quasiparticle-phonon coupling (QPC) model using the Quasiparticle Time Blocking…