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

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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Publicado: 1994
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562813_v49_n4_p1989_Dussel
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 paper:paper_05562813_v49_n4_p1989_Dussel
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spelling paper:paper_05562813_v49_n4_p1989_Dussel2023-06-08T15:41:40Z Analysis of the spreading width of the particle-hole giant resonances 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. 1994 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562813_v49_n4_p1989_Dussel 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.
title Analysis of the spreading width of the particle-hole giant resonances
spellingShingle 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
publishDate 1994
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562813_v49_n4_p1989_Dussel
http://hdl.handle.net/20.500.12110/paper_05562813_v49_n4_p1989_Dussel
_version_ 1768545009998495744

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