Interacting boson model from energy density functionals

10h GANIL seminar room (105)

a coffee will be served 15mn before

Nuclear energy density functional (EDF) has provided both universal
and accurate description of various nuclear properties, and is also useful
for nuclear spectroscopy. The interacting boson model (IBM) has been
successful for reproducing quadrupole collective states of medium-heavy
nuclei. We have recently proposed a novel way of determining the Hamiltonian
of IBM based on the EDF [1]. Multi-fermion dynamics of surface deformation,
studied with a given EDF, e.g., Skyrme, Gogny and RMF ones, is mapped
onto the appropriate boson system. Strength parameters of IBM are determined
through this process, thereby allowing spectroscopic analyses and predictions.

I will present basic notions of this method, and the results of recent relevant
work: boson mapping for rotational nuclei [2], robust regularity of non-axially
symmetric nuclei [3], and topics related to \gamma-spectroscopy [4].

References:
[1] K.N., N. Shimizu, and T. Otsuka, PRL101, 142501 (2008).
[2] K.N., T. Otsuka, N. Shimizu, and L. Guo, PRC83, 041302(R) (2011).
[3] K.N., N. Shimizu, D. Vretenar, T. Niksic, and T. Otsuka,
arXiv:1109.5754[nucl-th]
[4] K.N., T. Otsuka, R. Rodriguez-Guzman, L. M. Robledo, and P. Sarriguren,
     P. H, Regan, P. D. Stevenson, and Zs. Podolyak, PRC83, 054303 (2011).