OAK RIDGE NATIONAL LABORATORYU. S. DEPARTMENT OF ENERGY

Large Deformation Data in DFT FitsLarge Deformation Data in DFT Fits

Leptodermous expansion: LDM Energy from microscopic effective interactions

Observation: some parameters of the expansion (assym) are very poorly constrained

Force SkM* SkP SkI3 SkI4 SLy4

assym -52 MeV -45 MeV -75 MeV -34 MeV -54 MeV

N. Nikolov, N. Schunck, W. Nazarewicz, M. Bender

Proposal: Include data on well-deformed nuclei like position of bandheads of super-deformed bands or fission isomers in the fit of the functional

Isospin and mass dependence imply larger uncertainties in neutron-rich nuclei

OAK RIDGE NATIONAL LABORATORYU. S. DEPARTMENT OF ENERGY

Leptodermous expansion show stability of deformed neutron-rich nuclei caused by (poorly constrained) surface-symmetry energy

Benchmarking of excitation energy of super-deformed states and fission isomers with microscopic interactions show fluctuations larger than theoretical and experimental uncertainties

N. Nikolov, N. Schunck, W. Nazarewicz, M. Bender

[1] P.-G. Reinhard et al, Phys. Rev. C73, 014309 (2006)

[2] M. Bender et al, In preparation