JUSTIPEN seminar 9
Talker: Nicolas Schunck (ORNL)
Title: Towards a Universal Nuclear Energy Density Functional: Spectroscopy of
Odd Nuclei in HFB Theory
Date and Place: 12/Decenber, 17:00, Conference hall, RIBF 2F (RIKEN)
Abstract:
Energy Density Functional (EDF) theory provides a global and consistent
framework to describe nuclear structure. Almost all of the current
parametrization of the EDF were obtained by starting from an effective
two-body interaction, e.g. of the Skyrme type, and only experimental
observables relative to even nuclei were taken into account in the fit
of the parameters of the interaction. This implies that, although the
EDF is made of both time-even and time-odd fields, the latter have not
been really probed during the fitting procedure. A consequence of this
bias is that the spectroscopic properties nuclei are rather poorly
described in self-consistent EDF approaches. Efficient EDF solvers
together with super-computing facilities allow us to change this
strategy and probe the time-odd fields in a more systematic way. The
talk will briefly review the formalism of the energy density functional
theory and present the first results of systematic self-consistent HFB
blocking calculations in the rare-earth region. Effects coming from the
interaction, from the presence of tensor terms and of time-odd fields
will be presented and the consequence on the fit of new generations of
functionals discussed.