Energy-shell contributions of the three-particle–three-hole excitations

The response functions for the extended second and third random phase approximation are compared. A second-order perturbation calculation shows that the first-order amplitude for the direct 3p3h (three-particle–three-hole) excitation from the ground state cancels with those that are engendered by th...

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Detalles Bibliográficos
Autores principales: Mariano, Alejandro Edgardo, Krmpotić, Francisco, Toledo Piza, A. F. R. de
Formato: Articulo
Lenguaje:Inglés
Publicado: 1994
Materias:
Ciencias Exactas
Física
Physics
Energy-shell
Response functions
Perturbation calculation
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/123272
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-123272
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
Physics
Energy-shell
Response functions
Perturbation calculation
spellingShingle Ciencias Exactas
Física
Physics
Energy-shell
Response functions
Perturbation calculation
Mariano, Alejandro Edgardo
Krmpotić, Francisco
Toledo Piza, A. F. R. de
Energy-shell contributions of the three-particle–three-hole excitations
topic_facet Ciencias Exactas
Física
Physics
Energy-shell
Response functions
Perturbation calculation
description The response functions for the extended second and third random phase approximation are compared. A second-order perturbation calculation shows that the first-order amplitude for the direct 3p3h (three-particle–three-hole) excitation from the ground state cancels with those that are engendered by the 1p1h-3p3h coupling. As a consequence nonvanishing 3p3h effects to the 1p1h response involve off energy shell renormalization only. On shell 3p3h processes are absent.
format Articulo
Articulo
author Mariano, Alejandro Edgardo
Krmpotić, Francisco
Toledo Piza, A. F. R. de
author_facet Mariano, Alejandro Edgardo
Krmpotić, Francisco
Toledo Piza, A. F. R. de
author_sort Mariano, Alejandro Edgardo
title Energy-shell contributions of the three-particle–three-hole excitations
title_short Energy-shell contributions of the three-particle–three-hole excitations
title_full Energy-shell contributions of the three-particle–three-hole excitations
title_fullStr Energy-shell contributions of the three-particle–three-hole excitations
title_full_unstemmed Energy-shell contributions of the three-particle–three-hole excitations
title_sort energy-shell contributions of the three-particle–three-hole excitations
publishDate 1994
url http://sedici.unlp.edu.ar/handle/10915/123272
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AT toledopizaafrde energyshellcontributionsofthethreeparticlethreeholeexcitations
bdutipo_str Repositorios
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