Localization of pairing correlations in nuclei within relativistic mean field models
| Autor: | Lasseri, R. -D., Ebran, J. -P., Khan, E., Sandulescu, N. |
|---|---|
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Phys. Rev. C 98, 014310 (2018) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevC.98.014310 |
| Popis: | We analyze the localization properties of two-body correlations induced by pairing in the framework of relativistic mean field (RMF) models. The spatial properties of two-body correlations are studied for the pairing tensor in coordinate space and for the Cooper pair wave function. The calculations are performed both with Relativistic-Hatree-Bogoliubov (RHB) and RMF+Projected-BCS (PBCS) models and taking as examples the nuclei $^{66}$Ni, $^{124}$Sn and $^{200}$Pb. It is shown that the coherence length have the same pattern as in previous non-relativistic HFB calculations, i.e., it is maximum in the interior of the nucleus and drops to a minimum in the surface region. In the framework of RMF+PBCS we have also analysed, for the particular case of $^{120}$Sn, the dependence of the coherence length on the intensity of the pairing force. This analysis indicates that pairing is reducing the coherence length by about 25-30 $\%$ compared to the RMF limit. Comment: 8 pages, 7 figures |
| Databáze: | arXiv |
| Externí odkaz: |
|