dorsal/arxiv
View SchemaA Multi-Configuration Mixing Approach with Symmetry-Projected Complex Hartree-Fock-Bogoliubov Determinants
| Authors | E. Bender, K. W. Schmid, Amand~Faessler |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9506007 |
| URL | https://arxiv.org/abs/nucl-th/9506007 |
| DOI | 10.1016/0375-9474(95)00387-8 |
| Journal | Nucl.Phys. A596 (1996) 1-29 |
Abstract
A multi-configuration mixing approach built on essentially complex, symmetry-projected Hartree-Fock-Bogoliubov (HFB) mean fields is introduced. The mean fields are obtained by variation after projection. The configuration space consists out of the symmetry-projected HFB vacuum and the symmetry-projected two-quasiparticle excitations for even, and the symmetry-projected one-quasiparticle excitations for odd A systems. The underlying complex HFB transformations are assumed to be time-reversal invariant and axially symmetric. The model allows nuclear structure calculations in large model spaces with arbitrary two-body interactions. The approach has been applied to $^{20}$Ne and $^{22}$Ne. Good agreement with the exact shell model results and considerable improvement with respect to older calculations, in which only real HFB transformations were admitted, is obtained.
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"abstract": "A multi-configuration mixing approach built on essentially complex,\nsymmetry-projected Hartree-Fock-Bogoliubov (HFB) mean fields is introduced. The\nmean fields are obtained by variation after projection. The configuration space\nconsists out of the symmetry-projected HFB vacuum and the symmetry-projected\ntwo-quasiparticle excitations for even, and the symmetry-projected\none-quasiparticle excitations for odd A systems. The underlying complex HFB\ntransformations are assumed to be time-reversal invariant and axially\nsymmetric. The model allows nuclear structure calculations in large model\nspaces with arbitrary two-body interactions. The approach has been applied to\n$^{20}$Ne and $^{22}$Ne. Good agreement with the exact shell model results and\nconsiderable improvement with respect to older calculations, in which only real\nHFB transformations were admitted, is obtained.",
"arxiv_id": "nucl-th/9506007",
"authors": [
"E. Bender",
"K. W. Schmid",
"Amand~Faessler"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/0375-9474(95)00387-8",
"journal_ref": "Nucl.Phys. A596 (1996) 1-29",
"title": "A Multi-Configuration Mixing Approach with Symmetry-Projected Complex Hartree-Fock-Bogoliubov Determinants",
"url": "https://arxiv.org/abs/nucl-th/9506007"
},
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