Isoscalar and isovector neutron-proton pairing

Abstract

Neutron-proton (np-) pairing is expected to play an important role in the N Z nuclei. In general, it can have isovector and isoscalar character. The existence of isovector np-pairing is well established. On the contrary, it is still debated whether there is an isoscalar np-pairing. The review of the situation with these two types of pairing with special emphasis on the isoscalar one is presented. It is concluded that there are no substantial evidences for the existence of isoscalar np-pairing.

18 pages, 4 figures, chapter in "Fifty Years of Nuclear BCS", eds. R.A. Broglia and V.Zelevinsky

References in corpus (5)

• Spin-triplet pairing in large nuclei
• Isospin-symmetry restoration within the nuclear density functional theory: formalism and applications
• Relation between Wigner energy and proton-neutron pairing
• Partial-wave contributions to pairing in nuclei
• Pairing theory of the symmetry energy

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• Microscopic description of rotation: From ground states to the extremes of ultra-high spin
• Addressing spectroscopic quality of covariant density functional theory
• Neutron--proton spin--spin correlations in the ground states of N=Z nuclei
• Collective model with isovector pair and alpha-particle type correlations