Seniority number in spin-adapted spaces and compactness of configuration interaction wave functions
- Autores
- Alcoba, Diego Ricardo; Torre, Alicia; Lain, Luis; Massaccesi, Gustavo Ernesto; Oña, Ofelia Beatriz
- Año de publicación
- 2013
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- This work extends the concept of seniority number, which has been widely used for classifying N-electron Slater determinants, to wave functions of N electrons and spin S, as well as to N-electron spin-adapted Hilbert spaces. We propose a spin-free formulation of the seniority number operator and perform a study on the behavior of the expectation values of this operator under transformations of the molecular basis sets. This study leads to propose a quantitative evaluation for the convergence of the expansions of the wave functions in terms of Slater determinants. The non-invariant character of the seniority number operator expectation value of a wave function with respect to a unitary transformation of the molecular orbital basis set, allows us to search for a change of basis which minimizes that expectation value. The results found in the description of wave functions of selected atoms and molecules show that the expansions expressed in these bases exhibit a more rapid convergence than those formulated in the canonical molecular orbital bases and even in the natural orbital ones.
Fil: Alcoba, Diego Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina
Fil: Torre, Alicia. Universidad del País Vasco; España
Fil: Lain, Luis. Universidad del País Vasco; España
Fil: Massaccesi, Gustavo Ernesto. Universidad de Buenos Aires. Ciclo Básico Común; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Matemática; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Oña, Ofelia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina - Materia
-
Seniority Number
Configuration Interaction
Compactness Wave Function - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/2449
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Seniority number in spin-adapted spaces and compactness of configuration interaction wave functionsAlcoba, Diego RicardoTorre, AliciaLain, LuisMassaccesi, Gustavo ErnestoOña, Ofelia BeatrizSeniority NumberConfiguration InteractionCompactness Wave Functionhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1This work extends the concept of seniority number, which has been widely used for classifying N-electron Slater determinants, to wave functions of N electrons and spin S, as well as to N-electron spin-adapted Hilbert spaces. We propose a spin-free formulation of the seniority number operator and perform a study on the behavior of the expectation values of this operator under transformations of the molecular basis sets. This study leads to propose a quantitative evaluation for the convergence of the expansions of the wave functions in terms of Slater determinants. The non-invariant character of the seniority number operator expectation value of a wave function with respect to a unitary transformation of the molecular orbital basis set, allows us to search for a change of basis which minimizes that expectation value. The results found in the description of wave functions of selected atoms and molecules show that the expansions expressed in these bases exhibit a more rapid convergence than those formulated in the canonical molecular orbital bases and even in the natural orbital ones.Fil: Alcoba, Diego Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; ArgentinaFil: Torre, Alicia. Universidad del País Vasco; EspañaFil: Lain, Luis. Universidad del País Vasco; EspañaFil: Massaccesi, Gustavo Ernesto. Universidad de Buenos Aires. Ciclo Básico Común; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Matemática; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Oña, Ofelia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaAmerican Institute of Physics2013-08-23info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/2449Alcoba, Diego Ricardo; Torre, Alicia; Lain, Luis; Massaccesi, Gustavo Ernesto; Oña, Ofelia Beatriz; Seniority number in spin-adapted spaces and compactness of configuration interaction wave functions; American Institute of Physics; Journal of Chemical Physics; 139; 8; 23-8-2013; 1-70021-9606enginfo:eu-repo/semantics/altIdentifier/url/http://scitation.aip.org/content/aip/journal/jcp/139/8/10.1063/1.4818755info:eu-repo/semantics/altIdentifier/doi/10.1063/1.4818755info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:58:44Zoai:ri.conicet.gov.ar:11336/2449instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:58:45.044CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Seniority number in spin-adapted spaces and compactness of configuration interaction wave functions |
title |
Seniority number in spin-adapted spaces and compactness of configuration interaction wave functions |
spellingShingle |
Seniority number in spin-adapted spaces and compactness of configuration interaction wave functions Alcoba, Diego Ricardo Seniority Number Configuration Interaction Compactness Wave Function |
title_short |
Seniority number in spin-adapted spaces and compactness of configuration interaction wave functions |
title_full |
Seniority number in spin-adapted spaces and compactness of configuration interaction wave functions |
title_fullStr |
Seniority number in spin-adapted spaces and compactness of configuration interaction wave functions |
title_full_unstemmed |
Seniority number in spin-adapted spaces and compactness of configuration interaction wave functions |
title_sort |
Seniority number in spin-adapted spaces and compactness of configuration interaction wave functions |
dc.creator.none.fl_str_mv |
Alcoba, Diego Ricardo Torre, Alicia Lain, Luis Massaccesi, Gustavo Ernesto Oña, Ofelia Beatriz |
author |
Alcoba, Diego Ricardo |
author_facet |
Alcoba, Diego Ricardo Torre, Alicia Lain, Luis Massaccesi, Gustavo Ernesto Oña, Ofelia Beatriz |
author_role |
author |
author2 |
Torre, Alicia Lain, Luis Massaccesi, Gustavo Ernesto Oña, Ofelia Beatriz |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Seniority Number Configuration Interaction Compactness Wave Function |
topic |
Seniority Number Configuration Interaction Compactness Wave Function |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
This work extends the concept of seniority number, which has been widely used for classifying N-electron Slater determinants, to wave functions of N electrons and spin S, as well as to N-electron spin-adapted Hilbert spaces. We propose a spin-free formulation of the seniority number operator and perform a study on the behavior of the expectation values of this operator under transformations of the molecular basis sets. This study leads to propose a quantitative evaluation for the convergence of the expansions of the wave functions in terms of Slater determinants. The non-invariant character of the seniority number operator expectation value of a wave function with respect to a unitary transformation of the molecular orbital basis set, allows us to search for a change of basis which minimizes that expectation value. The results found in the description of wave functions of selected atoms and molecules show that the expansions expressed in these bases exhibit a more rapid convergence than those formulated in the canonical molecular orbital bases and even in the natural orbital ones. Fil: Alcoba, Diego Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina Fil: Torre, Alicia. Universidad del País Vasco; España Fil: Lain, Luis. Universidad del País Vasco; España Fil: Massaccesi, Gustavo Ernesto. Universidad de Buenos Aires. Ciclo Básico Común; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Matemática; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Oña, Ofelia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina |
description |
This work extends the concept of seniority number, which has been widely used for classifying N-electron Slater determinants, to wave functions of N electrons and spin S, as well as to N-electron spin-adapted Hilbert spaces. We propose a spin-free formulation of the seniority number operator and perform a study on the behavior of the expectation values of this operator under transformations of the molecular basis sets. This study leads to propose a quantitative evaluation for the convergence of the expansions of the wave functions in terms of Slater determinants. The non-invariant character of the seniority number operator expectation value of a wave function with respect to a unitary transformation of the molecular orbital basis set, allows us to search for a change of basis which minimizes that expectation value. The results found in the description of wave functions of selected atoms and molecules show that the expansions expressed in these bases exhibit a more rapid convergence than those formulated in the canonical molecular orbital bases and even in the natural orbital ones. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-08-23 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/2449 Alcoba, Diego Ricardo; Torre, Alicia; Lain, Luis; Massaccesi, Gustavo Ernesto; Oña, Ofelia Beatriz; Seniority number in spin-adapted spaces and compactness of configuration interaction wave functions; American Institute of Physics; Journal of Chemical Physics; 139; 8; 23-8-2013; 1-7 0021-9606 |
url |
http://hdl.handle.net/11336/2449 |
identifier_str_mv |
Alcoba, Diego Ricardo; Torre, Alicia; Lain, Luis; Massaccesi, Gustavo Ernesto; Oña, Ofelia Beatriz; Seniority number in spin-adapted spaces and compactness of configuration interaction wave functions; American Institute of Physics; Journal of Chemical Physics; 139; 8; 23-8-2013; 1-7 0021-9606 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://scitation.aip.org/content/aip/journal/jcp/139/8/10.1063/1.4818755 info:eu-repo/semantics/altIdentifier/doi/10.1063/1.4818755 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
American Institute of Physics |
publisher.none.fl_str_mv |
American Institute of Physics |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613748431519744 |
score |
13.070432 |