dorsal/arxiv
View SchemaA variational approach to the partition function of an interacting many body system
| Authors | Christian Rummel, Helmut Hofmann |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0407091 |
| URL | https://arxiv.org/abs/nucl-th/0407091 |
| DOI | 10.1016/j.nuclphysa.2005.03.009 |
| Journal | Nucl.Phys. A756 (2005) 118-135 |
Abstract
For the calculation of the partition function $\mathcal{Z}$ of small, isolated and interacting many body systems an improvement with respect to previous formulations is presented. By including anharmonicities and employing a variational approach quantum effects can be treated even at very low temperatures. In order to test its accuracy the novel approach is applied to the exactly solvable Lipkin-Meshkov-Glick model (LMGM). For thermodynamic properties and level densities good agreement with the exact calculations is found.
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"abstract": "For the calculation of the partition function $\\mathcal{Z}$ of small,\nisolated and interacting many body systems an improvement with respect to\nprevious formulations is presented. By including anharmonicities and employing\na variational approach quantum effects can be treated even at very low\ntemperatures. In order to test its accuracy the novel approach is applied to\nthe exactly solvable Lipkin-Meshkov-Glick model (LMGM). For thermodynamic\nproperties and level densities good agreement with the exact calculations is\nfound.",
"arxiv_id": "nucl-th/0407091",
"authors": [
"Christian Rummel",
"Helmut Hofmann"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/j.nuclphysa.2005.03.009",
"journal_ref": "Nucl.Phys. A756 (2005) 118-135",
"title": "A variational approach to the partition function of an interacting many body system",
"url": "https://arxiv.org/abs/nucl-th/0407091"
},
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