Towards a universal exchange enhancement factor in density functional theory
- Autores
- Horowitz, Claudio; Proetto, Cesar Ramon; Pitarke, J. M.
- Año de publicación
- 2023
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- A broadly used strategy to go beyond the well-known local-density approximation of density functional theory relies on the choice of a so-called exchange-correlation (xc) enhancement factor Fxc, defined as the enhancement of a realistic xc energy density over its local exchange-only counterpart. To date, this density functional, Fxc, has been constructed by following either semiempirical strategies or nonempirical schemes that impose the fulfillment of exact constraints. Here, we follow a totally different route, which is based on an attempt to construct a universal exchange enhancement factor Fx from the exact exchange energy density of a given family of electron density profiles and which we implement on the basis of jellium-slab exact-exchange self-consistent calculations. We find that such an enhancement factor can, indeed, be built which obeys, within our sample of electron-density profiles, most exact constraints and thus represents a benchmark towards the construction of a universal exchange enhancement factor suitable for all electron densities. We provide, in particular, an analytical parametrization of our ab initio calculations at the level of the generalized gradient approximation.
Fil: Horowitz, Claudio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Proetto, Cesar Ramon. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología - Nodo Bariloche | Comisión Nacional de Energía Atómica. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología - Nodo Bariloche; Argentina
Fil: Pitarke, J. M.. Consejo Superior de Investigaciones Científicas; España - Materia
-
DENSITY FUNCTIONAL THEORY
GENERALIZED GRADIENTAPPROXIMATION - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/227067
Ver los metadatos del registro completo
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Towards a universal exchange enhancement factor in density functional theoryHorowitz, ClaudioProetto, Cesar RamonPitarke, J. M.DENSITY FUNCTIONAL THEORYGENERALIZED GRADIENTAPPROXIMATIONhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1A broadly used strategy to go beyond the well-known local-density approximation of density functional theory relies on the choice of a so-called exchange-correlation (xc) enhancement factor Fxc, defined as the enhancement of a realistic xc energy density over its local exchange-only counterpart. To date, this density functional, Fxc, has been constructed by following either semiempirical strategies or nonempirical schemes that impose the fulfillment of exact constraints. Here, we follow a totally different route, which is based on an attempt to construct a universal exchange enhancement factor Fx from the exact exchange energy density of a given family of electron density profiles and which we implement on the basis of jellium-slab exact-exchange self-consistent calculations. We find that such an enhancement factor can, indeed, be built which obeys, within our sample of electron-density profiles, most exact constraints and thus represents a benchmark towards the construction of a universal exchange enhancement factor suitable for all electron densities. We provide, in particular, an analytical parametrization of our ab initio calculations at the level of the generalized gradient approximation.Fil: Horowitz, Claudio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: Proetto, Cesar Ramon. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología - Nodo Bariloche | Comisión Nacional de Energía Atómica. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología - Nodo Bariloche; ArgentinaFil: Pitarke, J. M.. Consejo Superior de Investigaciones Científicas; EspañaAmerican Physical Society2023-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/227067Horowitz, Claudio; Proetto, Cesar Ramon; Pitarke, J. M.; Towards a universal exchange enhancement factor in density functional theory; American Physical Society; Physical Review B; 107; 19; 5-2023; 1-82469-99502469-9969CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.107.195120info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:06:32Zoai:ri.conicet.gov.ar:11336/227067instacron: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 12:06:32.317CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Towards a universal exchange enhancement factor in density functional theory |
| title |
Towards a universal exchange enhancement factor in density functional theory |
| spellingShingle |
Towards a universal exchange enhancement factor in density functional theory Horowitz, Claudio DENSITY FUNCTIONAL THEORY GENERALIZED GRADIENTAPPROXIMATION |
| title_short |
Towards a universal exchange enhancement factor in density functional theory |
| title_full |
Towards a universal exchange enhancement factor in density functional theory |
| title_fullStr |
Towards a universal exchange enhancement factor in density functional theory |
| title_full_unstemmed |
Towards a universal exchange enhancement factor in density functional theory |
| title_sort |
Towards a universal exchange enhancement factor in density functional theory |
| dc.creator.none.fl_str_mv |
Horowitz, Claudio Proetto, Cesar Ramon Pitarke, J. M. |
| author |
Horowitz, Claudio |
| author_facet |
Horowitz, Claudio Proetto, Cesar Ramon Pitarke, J. M. |
| author_role |
author |
| author2 |
Proetto, Cesar Ramon Pitarke, J. M. |
| author2_role |
author author |
| dc.subject.none.fl_str_mv |
DENSITY FUNCTIONAL THEORY GENERALIZED GRADIENTAPPROXIMATION |
| topic |
DENSITY FUNCTIONAL THEORY GENERALIZED GRADIENTAPPROXIMATION |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
A broadly used strategy to go beyond the well-known local-density approximation of density functional theory relies on the choice of a so-called exchange-correlation (xc) enhancement factor Fxc, defined as the enhancement of a realistic xc energy density over its local exchange-only counterpart. To date, this density functional, Fxc, has been constructed by following either semiempirical strategies or nonempirical schemes that impose the fulfillment of exact constraints. Here, we follow a totally different route, which is based on an attempt to construct a universal exchange enhancement factor Fx from the exact exchange energy density of a given family of electron density profiles and which we implement on the basis of jellium-slab exact-exchange self-consistent calculations. We find that such an enhancement factor can, indeed, be built which obeys, within our sample of electron-density profiles, most exact constraints and thus represents a benchmark towards the construction of a universal exchange enhancement factor suitable for all electron densities. We provide, in particular, an analytical parametrization of our ab initio calculations at the level of the generalized gradient approximation. Fil: Horowitz, Claudio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina Fil: Proetto, Cesar Ramon. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología - Nodo Bariloche | Comisión Nacional de Energía Atómica. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología. Unidad Ejecutora Instituto de Nanociencia y Nanotecnología - Nodo Bariloche; Argentina Fil: Pitarke, J. M.. Consejo Superior de Investigaciones Científicas; España |
| description |
A broadly used strategy to go beyond the well-known local-density approximation of density functional theory relies on the choice of a so-called exchange-correlation (xc) enhancement factor Fxc, defined as the enhancement of a realistic xc energy density over its local exchange-only counterpart. To date, this density functional, Fxc, has been constructed by following either semiempirical strategies or nonempirical schemes that impose the fulfillment of exact constraints. Here, we follow a totally different route, which is based on an attempt to construct a universal exchange enhancement factor Fx from the exact exchange energy density of a given family of electron density profiles and which we implement on the basis of jellium-slab exact-exchange self-consistent calculations. We find that such an enhancement factor can, indeed, be built which obeys, within our sample of electron-density profiles, most exact constraints and thus represents a benchmark towards the construction of a universal exchange enhancement factor suitable for all electron densities. We provide, in particular, an analytical parametrization of our ab initio calculations at the level of the generalized gradient approximation. |
| publishDate |
2023 |
| dc.date.none.fl_str_mv |
2023-05 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://hdl.handle.net/11336/227067 Horowitz, Claudio; Proetto, Cesar Ramon; Pitarke, J. M.; Towards a universal exchange enhancement factor in density functional theory; American Physical Society; Physical Review B; 107; 19; 5-2023; 1-8 2469-9950 2469-9969 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/227067 |
| identifier_str_mv |
Horowitz, Claudio; Proetto, Cesar Ramon; Pitarke, J. M.; Towards a universal exchange enhancement factor in density functional theory; American Physical Society; Physical Review B; 107; 19; 5-2023; 1-8 2469-9950 2469-9969 CONICET Digital CONICET |
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eng |
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eng |
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info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevB.107.195120 |
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American Physical Society |
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American Physical Society |
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