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Title
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Four electrons interacting pairwise in the limit of infinitesimal confining potentials : especially the quintet spin state
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Author
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Abstract
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| In very recent work, Amovilli and March have considered the Hookean atom with four electrons. In particular, they demonstrated the cross-over from a triplet P-g ground state at large harmonic force constant k to a quintet S-u configuration for weak confinement, by means primarily of diffusion quantum Monte Carlo simulation. Here, we focus on such a quintet state for again four spin half fermions but now interacting via a harmonic pair force -K r(ij). The spatial quintet Psi is then available, with its eigenvalue. Progress on calculating low-order spinless density matrices is recorded. Finally, this prompts us to examine the Amovilli-March results when extrapolated to small k not equal 0. We display as k --> 0(+) approximate results for the four-electron Hookean atom model, including fitted analytic forms for kinetic and Coulomb energy as a function of k as k --> 0(+). (C) 2012 Elsevier B. V. All rights reserved. |
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Language
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English
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Source (journal)
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Chemical physics letters. - Amsterdam, 1967, currens
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Publication
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Amsterdam
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2012
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ISSN
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0009-2614
[print]
1873-4448
[online]
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DOI
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10.1016/J.CPLETT.2012.03.098
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Volume/pages
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536
(2012)
, p. 162-164
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ISI
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000303661400032
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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