Proton-neutron quadrupole interactions: an effective contribution to the pairing field

Details Proton-neutron quadrupole interactions: an effective contribution to the pairing field Proton-neutron quadrupole interactions: an effective contribution to the pairing field

2002-01-22

arxiv.org/abs/nucl-th/0201056v1

Phys.Rev. C65 (2002) 044309

Physics

Nuclear Physics

Nuclear Theory

19 pages, TeX, 3 tables, 2 figures. Accepted in PRC

Scientific paper

10.1103/PhysRevC.65.044309

We point out that the proton-neutron energy contribution, for low multipoles (in particular for the quadrupole component), effectively renormalizes the strength of the pairing interaction acting amongst identical nucleons filling up a single-j or a set of degenerate many-j shells. We carry out the calculation in lowest-order perturbation theory. We perform a study of this correction in various mass regions. These results may have implications for the use of pairing theory in medium-heavy nuclei and for the study of pairing energy corrections to the liquid drop model when studying nuclear masses.

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