Isospin singlet (pn) pairing and quartetting contribution to the binding energy of nuclei

Details Isospin singlet (pn) pairing and quartetting contribution to the binding energy of nuclei Isospin singlet (pn) pairing and quartetting contribution to the binding energy of nuclei

1999-06-29

arxiv.org/abs/nucl-th/9906092v1

Phys.Rev.C61:024306,2000

Physics

Nuclear Physics

Nuclear Theory

19 pages, 19 figures, submitted to PRC

Scientific paper

10.1103/PhysRevC.61.024306

Isospin singlet (pn) pairing as well as quartetting in nuclei is expected to arise near the symmetry line $N=Z$. Empirical values can be deduced from the nuclear binding energies applying special filters. Within the local density approximation, theoretical estimates for finite nuclei are obtained from results for the condensation energy of asymmetric nuclear matter. It is shown that the isospin singlet condensation energy drops down abruptly for |N-Z|~4 for medium nuclei in the region A=40. Furthermore, alpha-like quartetting and the influence of excitations are discussed.

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