dorsal/arxiv
View SchemaHartree-Fock and Many-Body Perturbation Theory with Correlated Realistic NN-Interactions
| Authors | R. Roth, P. Papakonstantinou, N. Paar, H. Hergert, T. Neff, H. Feldmeier |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0510036 |
| URL | https://arxiv.org/abs/nucl-th/0510036 |
| DOI | 10.1103/PhysRevC.73.044312 |
| Journal | Phys.Rev. C73 (2006) 044312 |
Abstract
We employ correlated realistic nucleon-nucleon interactions for the description of nuclear ground states throughout the nuclear chart within the Hartree-Fock approximation. The crucial short-range central and tensor correlations, which are induced by the realistic interaction and cannot be described by the Hartree-Fock many-body state itself, are included explicitly by a state-independent unitary transformation in the framework of the unitary correlation operator method (UCOM). Using the correlated realistic interaction V_UCOM resulting from the Argonne V18 potential, bound nuclei are obtained already on the Hartree-Fock level. However, the binding energies are smaller than the experimental values because long-range correlations have not been accounted for. Their inclusion by means of many-body perturbation theory leads to a remarkable agreement with experimental binding energies over the whole mass range from He-4 to Pb-208, even far off the valley of stability. The observed perturbative character of the residual long-range correlations and the apparently small net effect of three-body forces provides promising perspectives for a unified nuclear structure description.
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"abstract": "We employ correlated realistic nucleon-nucleon interactions for the\ndescription of nuclear ground states throughout the nuclear chart within the\nHartree-Fock approximation. The crucial short-range central and tensor\ncorrelations, which are induced by the realistic interaction and cannot be\ndescribed by the Hartree-Fock many-body state itself, are included explicitly\nby a state-independent unitary transformation in the framework of the unitary\ncorrelation operator method (UCOM). Using the correlated realistic interaction\nV_UCOM resulting from the Argonne V18 potential, bound nuclei are obtained\nalready on the Hartree-Fock level. However, the binding energies are smaller\nthan the experimental values because long-range correlations have not been\naccounted for. Their inclusion by means of many-body perturbation theory leads\nto a remarkable agreement with experimental binding energies over the whole\nmass range from He-4 to Pb-208, even far off the valley of stability. The\nobserved perturbative character of the residual long-range correlations and the\napparently small net effect of three-body forces provides promising\nperspectives for a unified nuclear structure description.",
"arxiv_id": "nucl-th/0510036",
"authors": [
"R. Roth",
"P. Papakonstantinou",
"N. Paar",
"H. Hergert",
"T. Neff",
"H. Feldmeier"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.73.044312",
"journal_ref": "Phys.Rev. C73 (2006) 044312",
"title": "Hartree-Fock and Many-Body Perturbation Theory with Correlated Realistic NN-Interactions",
"url": "https://arxiv.org/abs/nucl-th/0510036"
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