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Title
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Accuracy of the Hartree-Fock method for Wigner molecules at high magnetic fields
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Author
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Abstract
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| Few-electron systems confined in two-dimensional parabolic quantum dots at high magnetic fields are studied by the Hartree-Fock (HF) and exact diagoiialization methods. A generalized multicenter Gaussian basis is proposed in the HF method. A comparison of the HF and exact, results allows as to discuss the relevance of the symmetry of the charge density distribution for the accuracy of the HF method. It is shown that the energy estimates obtained with the broken-symmetry HF wave functions become exact in the infinite magnetic-field limit. In this limit the charge density of the broken-symmetry solution call be identified with the classical charge distribution. |
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Language
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English
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Source (journal)
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European physical journal : D : atomic, molecular and optical physics. - Berlin
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Publication
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Berlin
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2004
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ISSN
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1434-6060
[print]
1434-6079
[online]
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DOI
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10.1140/EPJD/E2003-00320-5
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Volume/pages
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28
:3
(2004)
, p. 373-380
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ISI
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000220378400008
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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