Analysis of the spreading width of the particle-hole giant resonances

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We evaluate the spreading width of the giant resonances using the discontinuity in the second derivative of the propagator of the vibrational phonon. This allows us to isolate the processes that contribute to the spreading width in terms of the Feynman diagrammatic expansion of the full boson propag...

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Autores principales: Dussel, G.G., Seva, E.C., Sofia, H.M.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_05562813_v49_n4_p1989_Dussel
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_05562813_v49_n4_p1989_Dussel
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spelling todo:paper_05562813_v49_n4_p1989_Dussel2023-10-03T15:34:44Z Analysis of the spreading width of the particle-hole giant resonances Dussel, G.G. Seva, E.C. Sofia, H.M. We evaluate the spreading width of the giant resonances using the discontinuity in the second derivative of the propagator of the vibrational phonon. This allows us to isolate the processes that contribute to the spreading width in terms of the Feynman diagrammatic expansion of the full boson propagator. Utilizing for classification purposes the nuclear field theory perturbative treatment of the one-phonon state, we obtain a very simple expression for the spreading width in the lowest (nonvanishing) order of perturbation theory. © 1994 The American Physical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_05562813_v49_n4_p1989_Dussel
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We evaluate the spreading width of the giant resonances using the discontinuity in the second derivative of the propagator of the vibrational phonon. This allows us to isolate the processes that contribute to the spreading width in terms of the Feynman diagrammatic expansion of the full boson propagator. Utilizing for classification purposes the nuclear field theory perturbative treatment of the one-phonon state, we obtain a very simple expression for the spreading width in the lowest (nonvanishing) order of perturbation theory. © 1994 The American Physical Society.
format JOUR
author Dussel, G.G.
Seva, E.C.
Sofia, H.M.
spellingShingle Dussel, G.G.
Seva, E.C.
Sofia, H.M.
Analysis of the spreading width of the particle-hole giant resonances
author_facet Dussel, G.G.
Seva, E.C.
Sofia, H.M.
author_sort Dussel, G.G.
title Analysis of the spreading width of the particle-hole giant resonances
title_short Analysis of the spreading width of the particle-hole giant resonances
title_full Analysis of the spreading width of the particle-hole giant resonances
title_fullStr Analysis of the spreading width of the particle-hole giant resonances
title_full_unstemmed Analysis of the spreading width of the particle-hole giant resonances
title_sort analysis of the spreading width of the particle-hole giant resonances
url http://hdl.handle.net/20.500.12110/paper_05562813_v49_n4_p1989_Dussel
work_keys_str_mv AT dusselgg analysisofthespreadingwidthoftheparticleholegiantresonances
AT sevaec analysisofthespreadingwidthoftheparticleholegiantresonances
AT sofiahm analysisofthespreadingwidthoftheparticleholegiantresonances
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