An ansatz for the decoupling of the electron-propagator equation of motion via superoperator algebra
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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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00092614_v169_n3_p236_Bochicchio |
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todo:paper_00092614_v169_n3_p236_Bochicchio2023-10-03T14:08:13Z An ansatz for the decoupling of the electron-propagator equation of motion via superoperator algebra Bochicchio, R.C. Grinberg, H. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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. |
| format |
JOUR |
| author |
Bochicchio, R.C. Grinberg, H. |
| spellingShingle |
Bochicchio, R.C. Grinberg, H. An ansatz for the decoupling of the electron-propagator equation of motion via superoperator algebra |
| author_facet |
Bochicchio, R.C. Grinberg, H. |
| author_sort |
Bochicchio, R.C. |
| 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 |
| url |
http://hdl.handle.net/20.500.12110/paper_00092614_v169_n3_p236_Bochicchio |
| work_keys_str_mv |
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1807322628513333248 |