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ISOLDE Seminar
The information about nuclear structure contained in binding energy differences: the example of delta Vpn
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Europe/Zurich
26-1-022 (CERN)
26-1-022
CERN
Description
Differences between binding energies of adjacent nuclei are often identified with ingredients of nuclear models such as effective single-particle energies or two-body matrix elements. For example, the changes in the large gaps observed in data for two-nucleon separation energies are often interpreted as due to the evolution of shell structure with N and Z. In Bender et al, Phys. Rev. C78 (2008) 054312, we showed that data can be explained in a coherent manner within mean-field-based models using an energy density functional (EDF) as due to a combination of the slow variation of spherical single-particle spectra and the rapid variation of collective correlation effects. The latter corresponds to fluctuations in shape degrees of freedom and require the restoration of symmetries broken by the self-consistent mean field and the mixing of configurations with different intrinsic deformation in the framework of the generator coordinate method.
I will present the extension of this analysis to a mass filter called delta Vpn that is often identified with the proton-neutron interaction in nuclei.
