Solving the multi-site and multi-orbital Dynamical Mean Field Theory using Density Matrix Renormalization

Autores
Núñez Fernández, Yuriel; Hallberg, Karen Astrid
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We implement an efficient numerical method to calculate response functions of complex impurities based on the Density Matrix Renormalization Group (DMRG) and use it as the impurity-solver of the Dynamical Mean Field Theory (DMFT). This method uses the correction vector to obtain precise Green's functions on the real frequency axis at zero temperature. By using a self-consistent bath configuration with very low entanglement, we take full advantage of the DMRG to calculate dynamical response functions paving the way to treat large effective impurities such as those corresponding to multi-orbital interacting models and multi-site or multi-momenta clusters. This method leads to reliable calculations of non-local self energies at arbitrary dopings and interactions and at any energy scale.
Fil: Núñez Fernández, Yuriel. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Hallberg, Karen Astrid. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
Materia
CORRELATED ELECTRONS
DENSITY MATRIX RENORMALIZATION GROUP
DENSITY OF STATES
DYNAMICAL MEAN FIELD THEORY
MULTI-ORBITAL MODELS
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:11336/98000
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Solving the multi-site and multi-orbital Dynamical Mean Field Theory using Density Matrix RenormalizationNúñez Fernández, YurielHallberg, Karen AstridCORRELATED ELECTRONSDENSITY MATRIX RENORMALIZATION GROUPDENSITY OF STATESDYNAMICAL MEAN FIELD THEORYMULTI-ORBITAL MODELShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We implement an efficient numerical method to calculate response functions of complex impurities based on the Density Matrix Renormalization Group (DMRG) and use it as the impurity-solver of the Dynamical Mean Field Theory (DMFT). This method uses the correction vector to obtain precise Green's functions on the real frequency axis at zero temperature. By using a self-consistent bath configuration with very low entanglement, we take full advantage of the DMRG to calculate dynamical response functions paving the way to treat large effective impurities such as those corresponding to multi-orbital interacting models and multi-site or multi-momenta clusters. This method leads to reliable calculations of non-local self energies at arbitrary dopings and interactions and at any energy scale.Fil: Núñez Fernández, Yuriel. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Hallberg, Karen Astrid. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; ArgentinaFrontiers Research Foundation2018-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/98000Núñez Fernández, Yuriel; Hallberg, Karen Astrid; Solving the multi-site and multi-orbital Dynamical Mean Field Theory using Density Matrix Renormalization; Frontiers Research Foundation; Frontiers in Physics; 5; FEB; 2-2018; 1-82296-424XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3389/fphy.2018.00013info:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/fphy.2018.00013/fullinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:11:09Zoai:ri.conicet.gov.ar:11336/98000instacron: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:34982025-10-22 12:11:09.371CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Solving the multi-site and multi-orbital Dynamical Mean Field Theory using Density Matrix Renormalization
title Solving the multi-site and multi-orbital Dynamical Mean Field Theory using Density Matrix Renormalization
spellingShingle Solving the multi-site and multi-orbital Dynamical Mean Field Theory using Density Matrix Renormalization
Núñez Fernández, Yuriel
CORRELATED ELECTRONS
DENSITY MATRIX RENORMALIZATION GROUP
DENSITY OF STATES
DYNAMICAL MEAN FIELD THEORY
MULTI-ORBITAL MODELS
title_short Solving the multi-site and multi-orbital Dynamical Mean Field Theory using Density Matrix Renormalization
title_full Solving the multi-site and multi-orbital Dynamical Mean Field Theory using Density Matrix Renormalization
title_fullStr Solving the multi-site and multi-orbital Dynamical Mean Field Theory using Density Matrix Renormalization
title_full_unstemmed Solving the multi-site and multi-orbital Dynamical Mean Field Theory using Density Matrix Renormalization
title_sort Solving the multi-site and multi-orbital Dynamical Mean Field Theory using Density Matrix Renormalization
dc.creator.none.fl_str_mv Núñez Fernández, Yuriel
Hallberg, Karen Astrid
author Núñez Fernández, Yuriel
author_facet Núñez Fernández, Yuriel
Hallberg, Karen Astrid
author_role author
author2 Hallberg, Karen Astrid
author2_role author
dc.subject.none.fl_str_mv CORRELATED ELECTRONS
DENSITY MATRIX RENORMALIZATION GROUP
DENSITY OF STATES
DYNAMICAL MEAN FIELD THEORY
MULTI-ORBITAL MODELS
topic CORRELATED ELECTRONS
DENSITY MATRIX RENORMALIZATION GROUP
DENSITY OF STATES
DYNAMICAL MEAN FIELD THEORY
MULTI-ORBITAL MODELS
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 implement an efficient numerical method to calculate response functions of complex impurities based on the Density Matrix Renormalization Group (DMRG) and use it as the impurity-solver of the Dynamical Mean Field Theory (DMFT). This method uses the correction vector to obtain precise Green's functions on the real frequency axis at zero temperature. By using a self-consistent bath configuration with very low entanglement, we take full advantage of the DMRG to calculate dynamical response functions paving the way to treat large effective impurities such as those corresponding to multi-orbital interacting models and multi-site or multi-momenta clusters. This method leads to reliable calculations of non-local self energies at arbitrary dopings and interactions and at any energy scale.
Fil: Núñez Fernández, Yuriel. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Hallberg, Karen Astrid. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
description We implement an efficient numerical method to calculate response functions of complex impurities based on the Density Matrix Renormalization Group (DMRG) and use it as the impurity-solver of the Dynamical Mean Field Theory (DMFT). This method uses the correction vector to obtain precise Green's functions on the real frequency axis at zero temperature. By using a self-consistent bath configuration with very low entanglement, we take full advantage of the DMRG to calculate dynamical response functions paving the way to treat large effective impurities such as those corresponding to multi-orbital interacting models and multi-site or multi-momenta clusters. This method leads to reliable calculations of non-local self energies at arbitrary dopings and interactions and at any energy scale.
publishDate 2018
dc.date.none.fl_str_mv 2018-02
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/11336/98000
Núñez Fernández, Yuriel; Hallberg, Karen Astrid; Solving the multi-site and multi-orbital Dynamical Mean Field Theory using Density Matrix Renormalization; Frontiers Research Foundation; Frontiers in Physics; 5; FEB; 2-2018; 1-8
2296-424X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/98000
identifier_str_mv Núñez Fernández, Yuriel; Hallberg, Karen Astrid; Solving the multi-site and multi-orbital Dynamical Mean Field Theory using Density Matrix Renormalization; Frontiers Research Foundation; Frontiers in Physics; 5; FEB; 2-2018; 1-8
2296-424X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3389/fphy.2018.00013
info:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/fphy.2018.00013/full
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 Frontiers Research Foundation
publisher.none.fl_str_mv Frontiers Research Foundation
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 12.982451

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