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http://hdl.handle.net/10261/50836
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dc.contributor.author | Nagy, Istvan | - |
dc.contributor.author | Aldazabal, Íñigo | - |
dc.date.accessioned | 2012-06-05T11:11:08Z | - |
dc.date.available | 2012-06-05T11:11:08Z | - |
dc.date.issued | 2012 | - |
dc.identifier | doi: 10.1103/PhysRevA.85.034501 | - |
dc.identifier | issn: 1050-2947 | - |
dc.identifier.citation | Physical Review A 85(3): 034501 (2012) | - |
dc.identifier.uri | http://hdl.handle.net/10261/50836 | - |
dc.description.abstract | In recent developments on the pair density needed to treat the non-Hartree-Fock-like part of interparticle repulsion, the natural orbitals and sign-correct expansion coefficients play a central role. Since, in principle, an infinite number of natural orbitals must be included, the convergence of expectation values due to finite-term approximations is an important issue. Here we discuss quantitatively this convergence problem based on an exactly solvable two-electron model atom, where the Schrödinger wave function for the ground state is expressible in terms of Löwdin's natural orbitals and sign-correct expansion coefficients. Using properly renormalized truncated series expansions for such an exact decomposition, the corresponding expectation values of the Schrödinger Hamiltonian are calculated analytically. A rapid and uniform convergence is found in these expectation values at given values of the coupling in the interparticle repulsion. © 2012 American Physical Society. | - |
dc.description.sponsorship | This work was supported partly by the Spanish MICINN (Project No. FIS2010-19609-C02-02). | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | - |
dc.rights | openAccess | - |
dc.title | Series expansions for an exact two-electron wave function in terms of Löwdin's renormalized natural orbitals | - |
dc.type | artículo | - |
dc.identifier.doi | 10.1103/PhysRevA.85.034501 | - |
dc.relation.publisherversion | http://dx.doi.org/10.1103/PhysRevA.85.034501 | - |
dc.date.updated | 2012-06-05T11:11:08Z | - |
dc.description.version | Peer Reviewed | - |
dc.contributor.funder | Ministerio de Ciencia e Innovación (España) | - |
dc.identifier.funder | http://dx.doi.org/10.13039/501100004837 | es_ES |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.languageiso639-1 | en | - |
item.fulltext | With Fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.openairetype | artículo | - |
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Series expansions for an exact two-electron.pdf | 117,63 kB | Adobe PDF | Visualizar/Abrir |
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