Self-energies for the particle-hole propagator from Feynman-Dyson equations

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Correlation-relaxation corrections to electronic transition energies are obtained through the self-energy fields for the particle-hole propagator. These objects are generated from Feynman-Dyson like equations within the scenario of the superoperator algebra. A Hartree-Fock reference state and a part...

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Autores principales: Bochicchio, R.C., Ferraro, M.B., Grinberg, H., Cavasotto, C.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_01661280_v335_n1-3_p1_Bochicchio
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_01661280_v335_n1-3_p1_Bochicchio
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spelling todo:paper_01661280_v335_n1-3_p1_Bochicchio2023-10-03T15:03:22Z Self-energies for the particle-hole propagator from Feynman-Dyson equations Bochicchio, R.C. Ferraro, M.B. Grinberg, H. Cavasotto, C. Correlation-relaxation corrections to electronic transition energies are obtained through the self-energy fields for the particle-hole propagator. These objects are generated from Feynman-Dyson like equations within the scenario of the superoperator algebra. A Hartree-Fock reference state and a partition of the operator space along with a particle conserving manifold are used to recast the lower order perturbative expressions for the self-energies. Correlated states are used to make explicit the appearance of higher order correction terms to the self-energy. It is explicitly shown that the present scheme leads to a proper classification of the order of the contribution from both the intrinsic interaction operator and the improved reference state. © 1995. Fil:Bochicchio, R.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ferraro, M.B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Grinberg, H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cavasotto, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01661280_v335_n1-3_p1_Bochicchio
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description Correlation-relaxation corrections to electronic transition energies are obtained through the self-energy fields for the particle-hole propagator. These objects are generated from Feynman-Dyson like equations within the scenario of the superoperator algebra. A Hartree-Fock reference state and a partition of the operator space along with a particle conserving manifold are used to recast the lower order perturbative expressions for the self-energies. Correlated states are used to make explicit the appearance of higher order correction terms to the self-energy. It is explicitly shown that the present scheme leads to a proper classification of the order of the contribution from both the intrinsic interaction operator and the improved reference state. © 1995.
format JOUR
author Bochicchio, R.C.
Ferraro, M.B.
Grinberg, H.
Cavasotto, C.
spellingShingle Bochicchio, R.C.
Ferraro, M.B.
Grinberg, H.
Cavasotto, C.
Self-energies for the particle-hole propagator from Feynman-Dyson equations
author_facet Bochicchio, R.C.
Ferraro, M.B.
Grinberg, H.
Cavasotto, C.
author_sort Bochicchio, R.C.
title Self-energies for the particle-hole propagator from Feynman-Dyson equations
title_short Self-energies for the particle-hole propagator from Feynman-Dyson equations
title_full Self-energies for the particle-hole propagator from Feynman-Dyson equations
title_fullStr Self-energies for the particle-hole propagator from Feynman-Dyson equations
title_full_unstemmed Self-energies for the particle-hole propagator from Feynman-Dyson equations
title_sort self-energies for the particle-hole propagator from feynman-dyson equations
url http://hdl.handle.net/20.500.12110/paper_01661280_v335_n1-3_p1_Bochicchio
work_keys_str_mv AT bochicchiorc selfenergiesfortheparticleholepropagatorfromfeynmandysonequations
AT ferraromb selfenergiesfortheparticleholepropagatorfromfeynmandysonequations
AT grinbergh selfenergiesfortheparticleholepropagatorfromfeynmandysonequations
AT cavasottoc selfenergiesfortheparticleholepropagatorfromfeynmandysonequations
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