Variational multiparticle-multihole configuration mixing method applied to pairing correlations in nuclei

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dc.creatorPillet, N.
dc.creatorBerger, J. -F.
dc.creatorCaurier, E.
dc.date2008-07-22
dc.date.accessioned2026-07-07T11:44:59Z
dc.date.available2026-07-07T11:44:59Z
dc.descriptionApplying a variational multiparticle-multihole configuration mixing method whose purpose is to include correlations beyond the mean field in a unified way without particle number and Pauli principle violations, we investigate pairing-like correlations in the ground states of $ ^{116}$Sn,$ ^{106}$Sn and $ ^{100}$Sn. The same effective nucleon-nucleon interaction namely, the D1S parameterization of the Gogny force is used to derive both the mean field and correlation components of nuclear wave functions. Calculations are performed using an axially symetric representation. The structure of correlated wave functions, their convergence with respect to the number of particle-hole excitations and the influence of correlations on single-particle level spectra and occupation probabilities are analyzed and compared with results obtained with the same two-body effective interaction from BCS, Hartree-Fock-Bogoliubov and particle number projected after variation BCS approaches. Calculations of nuclear radii and the first theoretical excited $0^+$ states are compared with experimental data.
dc.description25 pages 21 figures. accepted for publication in Physical Review C
dc.identifierhttps://arxiv.org/abs/0807.3468
dc.identifierhttp://arxiv.org/abs/0807.3468
dc.identifierPhys.Rev.C78:024305,2008
dc.identifierdoi:10.1103/PhysRevC.78.024305
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201745
dc.subjectNuclear Theory
dc.titleVariational multiparticle-multihole configuration mixing method applied to pairing correlations in nuclei
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