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Quantum Monte Carlo simulation study of free energies and melting transitions in Coulomb solids
https://nitech.repo.nii.ac.jp/records/4214
https://nitech.repo.nii.ac.jp/records/4214fdeef89e-03e7-4036-a5a2-c18f601f64ea
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
本文_fulltext (1.5 MB)
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(c)1993 The American Physical Society
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2012-11-07 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Quantum Monte Carlo simulation study of free energies and melting transitions in Coulomb solids | |||||||||||
| 言語 | en | |||||||||||
| 言語 | ||||||||||||
| 言語 | eng | |||||||||||
| 資源タイプ | ||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||
| 資源タイプ | journal article | |||||||||||
| 著者 |
Iyetomi, Hiroshi
× Iyetomi, Hiroshi
× Ogata, Shuji
× Ichimaru, Setsuo
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| 著者別名 | ||||||||||||
| 姓名 | 尾形, 修司 | |||||||||||
| 書誌情報 |
en : PHYSICAL REVIEW B 巻 47, 号 18, p. 11703-11711, 発行日 1993-05-01 |
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| 出版者 | ||||||||||||
| 出版者 | American Physical Society | |||||||||||
| 言語 | en | |||||||||||
| ISSN | ||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||
| 収録物識別子 | 0163-1829 | |||||||||||
| item_10001_source_id_32 | ||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||
| 収録物識別子 | AA00362255 | |||||||||||
| 出版タイプ | ||||||||||||
| 出版タイプ | VoR | |||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||
| item_10001_relation_34 | ||||||||||||
| 関連タイプ | isIdenticalTo | |||||||||||
| 識別子タイプ | DOI | |||||||||||
| 関連識別子 | http://dx.doi.org/10.1103/PhysRevB.47.11703 | |||||||||||
| 関連名称 | 10.1103/PhysRevB.47.11703 | |||||||||||
| 内容記述 | ||||||||||||
| 内容記述タイプ | Other | |||||||||||
| 内容記述 | The free energy of a one-component plasma (OCP) in a bcc crystalline state is calculated by a quantum Monte Carlo (MC) simulation method. The partition function in a Feynman path-integral form is sampled over a semiclassical reference system of 128 MC particles, with quantum fluctuations generated according to the Wigner-Seitz model. Exchange effects are shown to be negligible. Helmholtz-free energies of the Coulomb solid, computed at 48 combinations of density and temperature parameters, are decomposed into harmonic and anharmonic contributions and are fitted to analytic formulas; accuracy of the result is confirmed through comparison with the Wigner-Kirkwood expansions and with the ground-state results. The free-energy formulas are applied for calculation of the melting curves in dense carbon and helium OCP materials, appropriate to interiors of degenerate stars, showing that the melting curves start to deviate from the classical predictions at around ρm=2×108 g/cm3 (C) and 2×103 g/cm3 (He), far lower than the values predicted by analyses of the Lindemann type. | |||||||||||
| 言語 | en | |||||||||||
