title: Exact solution of the isovector neutron-proton pairing Hamiltonian.
abstract: The complete exact solution of the T = 1 neutron-proton pairing Hamiltonian is presented in the context of the SO(5) Richardson-Gaudin model with nondegenerate single-particle levels and including isospin symmetry-breaking terms. The power of the method is illustrated with a numerical calculation for for 64Ge for a pf + g9/2 model space which is out of reach of modern shell-model codes.
authors.affiliation: Instituto de Estructura de la Materia, CSIC. Serrano 123, 28006 Madrid, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Dukelsky
authors.forename: V G
authors.initials: VG
authors.lastname: Gueorguiev
authors.forename: P
authors.initials: P
authors.lastname: Van Isacker
authors.forename: S
authors.initials: S
authors.lastname: Dimitrova
authors.forename: B
authors.initials: B
authors.lastname: Errea
authors.forename: S
authors.initials: S
authors.lastname: Lerma