•Quantify correlations between the neutron skin and other quantities
characterizing finite nuclei and infinite nuclear matter.
•How will additional data on neutron-rich nuclei (e.g., masses) help us
constraining the neutron skin?
•Can one make reliable estimates of neutron-to-proton radii for open-shell
nuclei, important in the context of parity violation, where deformation and
pairing effects are large?
•Quantify the regions of instability of the nuclear energy density functional
•Is there an evidence for the isovector component of the pairing functional?
1
Correlations between observables
Witold Nazarewicz and Paul-Gerhard Reinhard
Consider an EDF described by coupling constants
The optimum
parameter set
Uncertainty in variable A:
Correlation between variables A and B:
Alignment of variables A and B:
=1: full alignment/correlation
=0: not aligned/statistically
independent
P. Klüpfel et al, arXi:0804.3385
Quantities of interest…
bulk equilibrium
symmetry energy
symmetry energy
at surface density
slope of binding energy
of neutron matter
dipole polarizability
rescaled polarizabiliy
Correlation between observables
The degree of alignment for various observables
highly
correlated
statistically
independent
alignment with F(q) in 208Pb
Survey of odd-even BE differences
Bertsch, Bertulani, Nazarewicz, Schunck, Stoitsov