Beyond the relativistic mean-field approximation (III): collective Hamiltonian in five dimensions

Niksic, T.; Li, Z. P.; Vretenar, D.; Prochniak, L.; Meng, J.; Ring, P.

Beyond the relativistic mean-field approximation (III): collective Hamiltonian in five dimensions

Authors

Description

The framework of relativistic energy density functionals is extended to include correlations related to restoration of broken symmetries and fluctuations of collective variables. A new implementation is developed for the solution of the eigenvalue problem of a five-dimensional collective Hamiltonian for quadrupole vibrational and rotational degrees of freedom, with parameters determined by constrained self-consistent relativistic mean-field calculations for triaxial shapes. The model is tested in a series of illustrative calculations of potential energy surfaces and the resulting collective excitation spectra and transition probabilities of the chain of even-even gadolinium isotopes.
53 pages, 23 figures, accepted for publication in Phys. Rev. C