dorsal/arxiv
View SchemaNuclear Structure Calculations with Coupled Cluster Methods from Quantum Chemistry
| Authors | D. J. Dean J. R. Gour, G. Hagen, M. Hjorth-Jensen, K. Kowalski, T. Papenbrock, P. Piecuch, M. Wloch |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0409062 |
| URL | https://arxiv.org/abs/nucl-th/0409062 |
| DOI | 10.1016/j.nuclphysa.2005.02.041 |
| Journal | Nucl.Phys. A752 (2005) 299-308 |
Abstract
We present several coupled-cluster calculations of ground and excited states of 4He and 16O employing methods from quantum chemistry. A comparison of coupled cluster results with the results of exact diagonalization of the hamiltonian in the same model space and other truncated shell-model calculations shows that the quantum chemistry inspired coupled cluster approximations provide an excellent description of ground and excited states of nuclei, with much less computational effort than traditional large-scale shell-model approaches. Unless truncations are made, for nuclei like 16O, full-fledged shell-model calculations with four or more major shells are not possible. However, these and even larger systems can be studied with the coupled cluster methods due to the polynomial rather than factorial scaling inherent in standard shell-model studies. This makes the coupled cluster approaches, developed in quantum chemistry, viable methods for describing weakly bound systems of interest for future nuclear facilities.
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"abstract": "We present several coupled-cluster calculations of ground and excited states\nof 4He and 16O employing methods from quantum chemistry. A comparison of\ncoupled cluster results with the results of exact diagonalization of the\nhamiltonian in the same model space and other truncated shell-model\ncalculations shows that the quantum chemistry inspired coupled cluster\napproximations provide an excellent description of ground and excited states of\nnuclei, with much less computational effort than traditional large-scale\nshell-model approaches. Unless truncations are made, for nuclei like 16O,\nfull-fledged shell-model calculations with four or more major shells are not\npossible. However, these and even larger systems can be studied with the\ncoupled cluster methods due to the polynomial rather than factorial scaling\ninherent in standard shell-model studies. This makes the coupled cluster\napproaches, developed in quantum chemistry, viable methods for describing\nweakly bound systems of interest for future nuclear facilities.",
"arxiv_id": "nucl-th/0409062",
"authors": [
"D. J. Dean J. R. Gour",
"G. Hagen",
"M. Hjorth-Jensen",
"K. Kowalski",
"T. Papenbrock",
"P. Piecuch",
"M. Wloch"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/j.nuclphysa.2005.02.041",
"journal_ref": "Nucl.Phys. A752 (2005) 299-308",
"title": "Nuclear Structure Calculations with Coupled Cluster Methods from Quantum Chemistry",
"url": "https://arxiv.org/abs/nucl-th/0409062"
},
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