Comparison of techniques for computing shell-model effective operators

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dc.creatorThoresen, M.
dc.creatorNavratil, P.
dc.creatorBarrett, B. R.
dc.date1998-04-08
dc.date.accessioned2026-07-07T11:11:38Z
dc.date.available2026-07-07T11:11:38Z
dc.descriptionDifferent techniques for calculating effective operators within the framework of the shell model using the same effective interaction and the same excitation spaces are presented. Starting with the large-basis no-core approach, we compare the time-honored perturbation-expansion approach and a model-space truncation approach. Results for the electric quadrupole and magnetic dipole operators are presented for $^6$Li. The convergence trends and dependence of the effective operators on differing excitation spaces and Pauli Q-operators is studied. In addition, the dependence of the electric-quadrupole effective charge on the harmonic-oscillator frequency and the mass number, for A=5,6, is investigated in the model-space truncation approach.
dc.description18 pages. REVTEX. 4 PostScript figures
dc.identifierhttps://arxiv.org/abs/nucl-th/9804016
dc.identifierhttp://arxiv.org/abs/nucl-th/9804016
dc.identifierPhys.Rev.C57:3108-3118,1998
dc.identifierdoi:10.1103/PhysRevC.57.3108
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/191159
dc.subjectNuclear Theory
dc.titleComparison of techniques for computing shell-model effective operators
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