Spatial correlation properties of the anomalous density matrix in a slab of nuclear matter with realistic NN-forces

Abstract

Spatial correlation characteristics of the anomalous density matrix $\kappa$ in a slab of nuclear matter with the Paris and Argonne v18 forces are calculated. A detailed comparison with predictions of the effective Gogny force is made. It is found that the two realistic forces lead to very close results which are qualitatively similar to those for the Gogny force. At the same time, the magnitude of $\kappa$ for realistic forces is essentially smaller than the one for the Gogny force. The correlation characteristics are practically independent of the magnitude of $\kappa$ and turn out to be quite close for the three kinds of the force. In particular, all of them predict a small value of the local correlation length at the surface of the slab and a big one, inside. These results are in agreement with those obtained recently by Pillet at al. for finite nuclei with the Gogny force.

19 pages, 13 figures

References in corpus (4)

• Coexistence of BCS and BEC-like pair structures in halo nuclei
• Generic strong coupling behavior of Cooper pairs in the surface of superfluid nuclei
• Interaction of the single-particle and collective degrees of freedom in non-magic nuclei: the role of phonon tadpole terms
• The microscopic pairing gap in a slab of nuclear matter for the Argonne v18 NN-potential

Cited by in corpus (1)

• Microscopic evaluation of the pairing gap