An ansatz for the decoupling of the electron-propagator equation of motion via superoperator algebra

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An alternative and direct procedure for the decoupling of the electron-propagator equation of motion within the superoperator formalism is presented. The present approach, based on inversion of the perturbation series for the (energy) Green's function, does not require inner projection of the s...

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Detalles Bibliográficos
Autores principales: Bochicchio, Roberto Carlos, Grinberg, Horacio
Publicado: 1990
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00092614_v169_n3_p236_Bochicchio
http://hdl.handle.net/20.500.12110/paper_00092614_v169_n3_p236_Bochicchio
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_00092614_v169_n3_p236_Bochicchio2023-06-08T14:33:41Z An ansatz for the decoupling of the electron-propagator equation of motion via superoperator algebra Bochicchio, Roberto Carlos Grinberg, Horacio An alternative and direct procedure for the decoupling of the electron-propagator equation of motion within the superoperator formalism is presented. The present approach, based on inversion of the perturbation series for the (energy) Green's function, does not require inner projection of the superoperator resolvent or renormalization theory and it is shown to yield, through an appropriate partitioning of the operator space, the lower-order corrections (ring and ladder diagrams) to the Tamm-Dancoff approximation (TDA). © 1990. Fil:Bochicchio, R.C. 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. 1990 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00092614_v169_n3_p236_Bochicchio http://hdl.handle.net/20.500.12110/paper_00092614_v169_n3_p236_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 An alternative and direct procedure for the decoupling of the electron-propagator equation of motion within the superoperator formalism is presented. The present approach, based on inversion of the perturbation series for the (energy) Green's function, does not require inner projection of the superoperator resolvent or renormalization theory and it is shown to yield, through an appropriate partitioning of the operator space, the lower-order corrections (ring and ladder diagrams) to the Tamm-Dancoff approximation (TDA). © 1990.
author Bochicchio, Roberto Carlos
Grinberg, Horacio
spellingShingle Bochicchio, Roberto Carlos
Grinberg, Horacio
An ansatz for the decoupling of the electron-propagator equation of motion via superoperator algebra
author_facet Bochicchio, Roberto Carlos
Grinberg, Horacio
author_sort Bochicchio, Roberto Carlos
title An ansatz for the decoupling of the electron-propagator equation of motion via superoperator algebra
title_short An ansatz for the decoupling of the electron-propagator equation of motion via superoperator algebra
title_full An ansatz for the decoupling of the electron-propagator equation of motion via superoperator algebra
title_fullStr An ansatz for the decoupling of the electron-propagator equation of motion via superoperator algebra
title_full_unstemmed An ansatz for the decoupling of the electron-propagator equation of motion via superoperator algebra
title_sort ansatz for the decoupling of the electron-propagator equation of motion via superoperator algebra
publishDate 1990
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00092614_v169_n3_p236_Bochicchio
http://hdl.handle.net/20.500.12110/paper_00092614_v169_n3_p236_Bochicchio
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