Ab-initio approach to effective single-particle energies in doubly closed shell nuclei

Details Ab-initio approach to effective single-particle energies in doubly closed shell nuclei Ab-initio approach to effective single-particle energies in doubly closed shell nuclei

2011-10-11

arxiv.org/abs/1110.2468v3

Phys. Rev. C85 (2012) 034330

Physics

Nuclear Physics

Nuclear Theory

14 pages, 10 figures, published in Physical Review C

Scientific paper

The present work discusses, from an ab-initio standpoint, the definition, the meaning, and the usefulness of effective single-particle energies (ESPEs) in doubly closed shell nuclei. We perform coupled-cluster calculations to quantify to what extent selected closed-shell nuclei in the oxygen and calcium isotopic chains can effectively be mapped onto an effective independent-particle picture. To do so, we revisit in detail the notion of ESPEs in the context of strongly correlated many-nucleon systems and illustrate the necessity to extract ESPEs through the diagonalization of the centroid {\it matrix}, as originally argued by Baranger. For the purpose of illustration, we analyse the impact of correlations on observable one-nucleon separation energies and non-observable ESPEs in selected closed-shell oxygen and calcium isotopes. We then state and illustrate the non-observability of ESPEs. Similarly to spectroscopic factors, ESPEs can indeed be modified by a redefinition of inaccessible quantities while leaving actual observables unchanged. This leads to the absolute necessity to employ consistent structure and reaction models based on the same nuclear Hamiltonian to extract the shell structure in a meaningful fashion from experimental data.

Affiliated with

Also associated with

No associations

Rating

Ab-initio approach to effective single-particle energies in doubly closed shell nuclei does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Ab-initio approach to effective single-particle energies in doubly closed shell nuclei, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ab-initio approach to effective single-particle energies in doubly closed shell nuclei will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-472532