Spin-triplet pairing in very large nuclei

Spin-triplet pairing is expected to compete favorably against ordinary spin-single pairing when neutron and proton numbers are equal the nucleus becomes very large. Using empirically derived interactions, the spin-triplet region was found to start just beyond the domain of physically realizable nuclei*. We investigate here how the dominant pairing mode depends on nuclear deformation and neutron excess. We find that the spin-triplet pairing can persist to large deformations when N=Z and in spherical nuclei with some small neutron-proton asymmetry.\\[4pt] G.F. Bertsch and Y. Luo, Phys. Rev. C {\bf 81} 064320 (2010)