Low energy meson spectrum from a QCD approach based on many-body methods

The TDA and RPA many-body methods are applied to a QCD motivated Hamiltonian in the Coulomb gauge. The gluon effects in the low energy domain are accounted for by the Instantaneous color-Coulomb Interaction between color-charge densities, approximated by the sum of a Coulomb and a confining linear p...

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Detalles Bibliográficos
Autores principales: Amor Quiroz, D. A., Yépez Martínez, Tochtli, Hess, P. O., Civitarese, Enrique Osvaldo, Weber, A.
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2017
Materias:
Física
Low energy meson spectrum
Non-perturbative QCD
TDA and RPA results
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125358
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-125358
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Low energy meson spectrum
Non-perturbative QCD
TDA and RPA results
spellingShingle Física
Low energy meson spectrum
Non-perturbative QCD
TDA and RPA results
Amor Quiroz, D. A.
Yépez Martínez, Tochtli
Hess, P. O.
Civitarese, Enrique Osvaldo
Weber, A.
Low energy meson spectrum from a QCD approach based on many-body methods
topic_facet Física
Low energy meson spectrum
Non-perturbative QCD
TDA and RPA results
description The TDA and RPA many-body methods are applied to a QCD motivated Hamiltonian in the Coulomb gauge. The gluon effects in the low energy domain are accounted for by the Instantaneous color-Coulomb Interaction between color-charge densities, approximated by the sum of a Coulomb and a confining linear potentials. We use the eigenfunctions of the harmonic oscillator as a basis for the quantization of the quark fields, and discuss how suitable this basis is in various steps of the calculation. We show that the TDA results already reproduce the gross-structure of the light flavored meson states. The pion-like state in the RPA description, which is a highly collective state, is in a better agreement with the experimental value. The results are related to other nonperturbative treatments and compared to experimental data. We discuss the advantages of the present approach.
format Articulo
Preprint
author Amor Quiroz, D. A.
Yépez Martínez, Tochtli
Hess, P. O.
Civitarese, Enrique Osvaldo
Weber, A.
author_facet Amor Quiroz, D. A.
Yépez Martínez, Tochtli
Hess, P. O.
Civitarese, Enrique Osvaldo
Weber, A.
author_sort Amor Quiroz, D. A.
title Low energy meson spectrum from a QCD approach based on many-body methods
title_short Low energy meson spectrum from a QCD approach based on many-body methods
title_full Low energy meson spectrum from a QCD approach based on many-body methods
title_fullStr Low energy meson spectrum from a QCD approach based on many-body methods
title_full_unstemmed Low energy meson spectrum from a QCD approach based on many-body methods
title_sort low energy meson spectrum from a qcd approach based on many-body methods
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/125358
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AT yepezmartineztochtli lowenergymesonspectrumfromaqcdapproachbasedonmanybodymethods
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AT civitareseenriqueosvaldo lowenergymesonspectrumfromaqcdapproachbasedonmanybodymethods
AT webera lowenergymesonspectrumfromaqcdapproachbasedonmanybodymethods
bdutipo_str Repositorios
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