Anderson impurity model: Vertex corrections within the finite U non-crossing approximation

Autores
Roura Bas, Pablo Gines; Vildosola, Veronica Laura; Manuel, Luis Oscar; Llois, Ana Maria
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We revise the simplest possible approximations to solve numerically the vertex equations for the Anderson Impurity Model within the finite U Non-Crossing Approximation (UNCA) considering the self energies at lowest order in 1/N, that is, within the (1/N)^0 diagrammatic expansion. We introduce an approximation to the vertex corrections that includes the double energy dependence and compare it with an approximation (NCAf2v) that neglects a second energy argument. Finally, we analyse the influence on the estimated Kondo scale for simple electronic models.
Fil: Roura Bas, Pablo Gines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina
Fil: Vildosola, Veronica Laura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina
Fil: Manuel, Luis Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Llois, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina
Materia
STRONG CORRELATION
ANDERSON IMPURITY MODEL
NCA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/248328
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Anderson impurity model: Vertex corrections within the finite U non-crossing approximationRoura Bas, Pablo GinesVildosola, Veronica LauraManuel, Luis OscarLlois, Ana MariaSTRONG CORRELATIONANDERSON IMPURITY MODELNCAhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We revise the simplest possible approximations to solve numerically the vertex equations for the Anderson Impurity Model within the finite U Non-Crossing Approximation (UNCA) considering the self energies at lowest order in 1/N, that is, within the (1/N)^0 diagrammatic expansion. We introduce an approximation to the vertex corrections that includes the double energy dependence and compare it with an approximation (NCAf2v) that neglects a second energy argument. Finally, we analyse the influence on the estimated Kondo scale for simple electronic models.Fil: Roura Bas, Pablo Gines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; ArgentinaFil: Vildosola, Veronica Laura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; ArgentinaFil: Manuel, Luis Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Llois, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; ArgentinaElsevier Science2009-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/248328Roura Bas, Pablo Gines; Vildosola, Veronica Laura; Manuel, Luis Oscar; Llois, Ana Maria; Anderson impurity model: Vertex corrections within the finite U non-crossing approximation; Elsevier Science; Physica B: Condensed Matter; 404; 18; 10-2009; 2861-28640921-4526CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0921452609004682info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physb.2009.06.106info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:49:43Zoai:ri.conicet.gov.ar:11336/248328instacron: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:34982025-09-03 09:49:43.469CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Anderson impurity model: Vertex corrections within the finite U non-crossing approximation
title Anderson impurity model: Vertex corrections within the finite U non-crossing approximation
spellingShingle Anderson impurity model: Vertex corrections within the finite U non-crossing approximation
Roura Bas, Pablo Gines
STRONG CORRELATION
ANDERSON IMPURITY MODEL
NCA
title_short Anderson impurity model: Vertex corrections within the finite U non-crossing approximation
title_full Anderson impurity model: Vertex corrections within the finite U non-crossing approximation
title_fullStr Anderson impurity model: Vertex corrections within the finite U non-crossing approximation
title_full_unstemmed Anderson impurity model: Vertex corrections within the finite U non-crossing approximation
title_sort Anderson impurity model: Vertex corrections within the finite U non-crossing approximation
dc.creator.none.fl_str_mv Roura Bas, Pablo Gines
Vildosola, Veronica Laura
Manuel, Luis Oscar
Llois, Ana Maria
author Roura Bas, Pablo Gines
author_facet Roura Bas, Pablo Gines
Vildosola, Veronica Laura
Manuel, Luis Oscar
Llois, Ana Maria
author_role author
author2 Vildosola, Veronica Laura
Manuel, Luis Oscar
Llois, Ana Maria
author2_role author
author
author
dc.subject.none.fl_str_mv STRONG CORRELATION
ANDERSON IMPURITY MODEL
NCA
topic STRONG CORRELATION
ANDERSON IMPURITY MODEL
NCA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We revise the simplest possible approximations to solve numerically the vertex equations for the Anderson Impurity Model within the finite U Non-Crossing Approximation (UNCA) considering the self energies at lowest order in 1/N, that is, within the (1/N)^0 diagrammatic expansion. We introduce an approximation to the vertex corrections that includes the double energy dependence and compare it with an approximation (NCAf2v) that neglects a second energy argument. Finally, we analyse the influence on the estimated Kondo scale for simple electronic models.
Fil: Roura Bas, Pablo Gines. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina
Fil: Vildosola, Veronica Laura. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina
Fil: Manuel, Luis Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Llois, Ana Maria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina
description We revise the simplest possible approximations to solve numerically the vertex equations for the Anderson Impurity Model within the finite U Non-Crossing Approximation (UNCA) considering the self energies at lowest order in 1/N, that is, within the (1/N)^0 diagrammatic expansion. We introduce an approximation to the vertex corrections that includes the double energy dependence and compare it with an approximation (NCAf2v) that neglects a second energy argument. Finally, we analyse the influence on the estimated Kondo scale for simple electronic models.
publishDate 2009
dc.date.none.fl_str_mv 2009-10
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/11336/248328
Roura Bas, Pablo Gines; Vildosola, Veronica Laura; Manuel, Luis Oscar; Llois, Ana Maria; Anderson impurity model: Vertex corrections within the finite U non-crossing approximation; Elsevier Science; Physica B: Condensed Matter; 404; 18; 10-2009; 2861-2864
0921-4526
CONICET Digital
CONICET
url http://hdl.handle.net/11336/248328
identifier_str_mv Roura Bas, Pablo Gines; Vildosola, Veronica Laura; Manuel, Luis Oscar; Llois, Ana Maria; Anderson impurity model: Vertex corrections within the finite U non-crossing approximation; Elsevier Science; Physica B: Condensed Matter; 404; 18; 10-2009; 2861-2864
0921-4526
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0921452609004682
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physb.2009.06.106
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
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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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score 13.13397

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