dorsal/arxiv
View SchemaComparison of techniques for computing shell-model effective operators
| Authors | M. Thoresen, P. Navratil, B. R. Barrett |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9804016 |
| URL | https://arxiv.org/abs/nucl-th/9804016 |
| DOI | 10.1103/PhysRevC.57.3108 |
| Journal | Phys.Rev.C57:3108-3118,1998 |
Abstract
Different 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.
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"abstract": "Different techniques for calculating effective operators within the framework\nof the shell model using the same effective interaction and the same excitation\nspaces are presented. Starting with the large-basis no-core approach, we\ncompare the time-honored perturbation-expansion approach and a model-space\ntruncation approach. Results for the electric quadrupole and magnetic dipole\noperators are presented for $^6$Li. The convergence trends and dependence of\nthe effective operators on differing excitation spaces and Pauli Q-operators is\nstudied. In addition, the dependence of the electric-quadrupole effective\ncharge on the harmonic-oscillator frequency and the mass number, for A=5,6, is\ninvestigated in the model-space truncation approach.",
"arxiv_id": "nucl-th/9804016",
"authors": [
"M. Thoresen",
"P. Navratil",
"B. R. Barrett"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.57.3108",
"journal_ref": "Phys.Rev.C57:3108-3118,1998",
"title": "Comparison of techniques for computing shell-model effective operators",
"url": "https://arxiv.org/abs/nucl-th/9804016"
},
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