Non-perturbative RPA-method implemented in the Coulomb gauge QCD Hamiltonian: From quarks and gluons to baryons and mesons

Starting from an algebraic model based on the QCD-Hamiltonian and previously applied to study meson states, we have developed an extension of it in order to explore the structure of baryon states. In developing our approach we have adapted concepts taken from group theory and non-perturbative many-b...

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Autores principales: Yépez Martínez, Tochtli, Civitarese, Enrique Osvaldo, Hess, Peter O.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Física
QCD-Hamiltonian
baryon states
quarks and anti-quarks degrees of freedom
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/133769
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-133769
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
QCD-Hamiltonian
baryon states
quarks and anti-quarks degrees of freedom
spellingShingle Física
QCD-Hamiltonian
baryon states
quarks and anti-quarks degrees of freedom
Yépez Martínez, Tochtli
Civitarese, Enrique Osvaldo
Hess, Peter O.
Non-perturbative RPA-method implemented in the Coulomb gauge QCD Hamiltonian: From quarks and gluons to baryons and mesons
topic_facet Física
QCD-Hamiltonian
baryon states
quarks and anti-quarks degrees of freedom
description Starting from an algebraic model based on the QCD-Hamiltonian and previously applied to study meson states, we have developed an extension of it in order to explore the structure of baryon states. In developing our approach we have adapted concepts taken from group theory and non-perturbative many-body methods to describe states built from effective quarks and anti-quarks degrees of freedom. As a Hamiltonian we have used the QCD Hamiltonian written in the Coulomb Gauge, and expressed it in terms of effective quark-antiquark, di-quarks and di-antiquark excitations. To gain some insights about the relevant interactions of quarks in hadronic states, the Hamiltonian was approximately diagonalized by mapping quark-antiquark pairs and di-quarks (di-antiquarks) onto phonon states. In dealing with the structure of the vacuum of the theory, color-scalar and color-vector states are introduced to account for ground-state correlations. While the use of a purely color-scalar ground state is an obvious choice, so that colorless hadrons contain at least three quarks, the presence of coupled color-vector pairs in the ground state allows for colorless excitations resulting from the action of color objects upon it.
format Articulo
Articulo
author Yépez Martínez, Tochtli
Civitarese, Enrique Osvaldo
Hess, Peter O.
author_facet Yépez Martínez, Tochtli
Civitarese, Enrique Osvaldo
Hess, Peter O.
author_sort Yépez Martínez, Tochtli
title Non-perturbative RPA-method implemented in the Coulomb gauge QCD Hamiltonian: From quarks and gluons to baryons and mesons
title_short Non-perturbative RPA-method implemented in the Coulomb gauge QCD Hamiltonian: From quarks and gluons to baryons and mesons
title_full Non-perturbative RPA-method implemented in the Coulomb gauge QCD Hamiltonian: From quarks and gluons to baryons and mesons
title_fullStr Non-perturbative RPA-method implemented in the Coulomb gauge QCD Hamiltonian: From quarks and gluons to baryons and mesons
title_full_unstemmed Non-perturbative RPA-method implemented in the Coulomb gauge QCD Hamiltonian: From quarks and gluons to baryons and mesons
title_sort non-perturbative rpa-method implemented in the coulomb gauge qcd hamiltonian: from quarks and gluons to baryons and mesons
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/133769
work_keys_str_mv AT yepezmartineztochtli nonperturbativerpamethodimplementedinthecoulombgaugeqcdhamiltonianfromquarksandgluonstobaryonsandmesons
AT civitareseenriqueosvaldo nonperturbativerpamethodimplementedinthecoulombgaugeqcdhamiltonianfromquarksandgluonstobaryonsandmesons
AT hesspetero nonperturbativerpamethodimplementedinthecoulombgaugeqcdhamiltonianfromquarksandgluonstobaryonsandmesons
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