Neutron-proton pairing in the BCS approach

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dc.creatorCivitarese, O.
dc.creatorReboiro, M.
dc.creatorVogel, P.
dc.date1997-02-21
dc.date.accessioned2026-07-07T11:11:06Z
dc.date.available2026-07-07T11:11:06Z
dc.descriptionWe investigate the BCS treatment of neutron-proton pairing involving time-reversed orbits. We conclude that an isospin-symmetric hamiltonian, treated with the help of the generalized Bogolyubov transformation, fails to describe the ground state pairing properties correctly. In order for the np isovector pairs to coexist with the like-particle pairs, one has to break the isospin symmetry of the hamiltonian by artificially increasing the strength of np pairing interaction above its isospin symmetric value. We conjecture that the np isovector pairing represents part (or most) of the congruence energy (Wigner term) in nuclear masses.
dc.description9 pages, RevTex, submitted to Phys. Rev. C
dc.identifierhttps://arxiv.org/abs/nucl-th/9702047
dc.identifierhttp://arxiv.org/abs/nucl-th/9702047
dc.identifierPhys.Rev.C56:1840-1843,1997
dc.identifierdoi:10.1103/PhysRevC.56.1840
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/190980
dc.subjectNuclear Theory
dc.titleNeutron-proton pairing in the BCS approach
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