Diquarks and nucleons under strong magnetic fields in the NJL model

Autores
Coppola, Máximo; Gómez Dumm, Daniel Alberto; Scoccola, Norberto Nerio
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the description of nucleons and diquarks in the presence of a uniform strong magnetic field within the framework of the two-flavor Nambu--Jona-Lasinio model. Diquarks are constructed through the resummation of quark loop chains using the random phase approximation, while nucleons are treated as bound quark-diquark states described by a relativistic Fadeev equation, using the static approximation for quark exchange interactions. For charged particles, analytical calculations are performed using the Ritus eigenfunction method, which properly takes into account the breakdown of translation invariance that arises from the presence of Schwinger phases. Within this scheme, for definite model parametrizations we obtain numerical predictions for diquark and nucleon masses, which are compared with chiral perturbation theory and lattice QCD results. In addition, numerical estimations for nucleon magnetic moments are obtained.
Instituto de Física La Plata
Materia
Física
Ciencias Exactas
magnetic field
quantum chromodynamics
Ritus eigenfunction method
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/133308
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/133308
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Diquarks and nucleons under strong magnetic fields in the NJL modelCoppola, MáximoGómez Dumm, Daniel AlbertoScoccola, Norberto NerioFísicaCiencias Exactasmagnetic fieldquantum chromodynamicsRitus eigenfunction methodWe study the description of nucleons and diquarks in the presence of a uniform strong magnetic field within the framework of the two-flavor Nambu--Jona-Lasinio model. Diquarks are constructed through the resummation of quark loop chains using the random phase approximation, while nucleons are treated as bound quark-diquark states described by a relativistic Fadeev equation, using the static approximation for quark exchange interactions. For charged particles, analytical calculations are performed using the Ritus eigenfunction method, which properly takes into account the breakdown of translation invariance that arises from the presence of Schwinger phases. Within this scheme, for definite model parametrizations we obtain numerical predictions for diquark and nucleon masses, which are compared with chiral perturbation theory and lattice QCD results. In addition, numerical estimations for nucleon magnetic moments are obtained.Instituto de Física La Plata2020-11-18info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/133308enginfo:eu-repo/semantics/altIdentifier/issn/2470-0010info:eu-repo/semantics/altIdentifier/issn/2470-0029info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.102.094020info:eu-repo/semantics/altIdentifier/arxiv/2009.14105info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T17:12:41Zoai:sedici.unlp.edu.ar:10915/133308Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:12:41.593SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Diquarks and nucleons under strong magnetic fields in the NJL model
title Diquarks and nucleons under strong magnetic fields in the NJL model
spellingShingle Diquarks and nucleons under strong magnetic fields in the NJL model
Coppola, Máximo
Física
Ciencias Exactas
magnetic field
quantum chromodynamics
Ritus eigenfunction method
title_short Diquarks and nucleons under strong magnetic fields in the NJL model
title_full Diquarks and nucleons under strong magnetic fields in the NJL model
title_fullStr Diquarks and nucleons under strong magnetic fields in the NJL model
title_full_unstemmed Diquarks and nucleons under strong magnetic fields in the NJL model
title_sort Diquarks and nucleons under strong magnetic fields in the NJL model
dc.creator.none.fl_str_mv Coppola, Máximo
Gómez Dumm, Daniel Alberto
Scoccola, Norberto Nerio
author Coppola, Máximo
author_facet Coppola, Máximo
Gómez Dumm, Daniel Alberto
Scoccola, Norberto Nerio
author_role author
author2 Gómez Dumm, Daniel Alberto
Scoccola, Norberto Nerio
author2_role author
author
dc.subject.none.fl_str_mv Física
Ciencias Exactas
magnetic field
quantum chromodynamics
Ritus eigenfunction method
topic Física
Ciencias Exactas
magnetic field
quantum chromodynamics
Ritus eigenfunction method
dc.description.none.fl_txt_mv We study the description of nucleons and diquarks in the presence of a uniform strong magnetic field within the framework of the two-flavor Nambu--Jona-Lasinio model. Diquarks are constructed through the resummation of quark loop chains using the random phase approximation, while nucleons are treated as bound quark-diquark states described by a relativistic Fadeev equation, using the static approximation for quark exchange interactions. For charged particles, analytical calculations are performed using the Ritus eigenfunction method, which properly takes into account the breakdown of translation invariance that arises from the presence of Schwinger phases. Within this scheme, for definite model parametrizations we obtain numerical predictions for diquark and nucleon masses, which are compared with chiral perturbation theory and lattice QCD results. In addition, numerical estimations for nucleon magnetic moments are obtained.
Instituto de Física La Plata
description We study the description of nucleons and diquarks in the presence of a uniform strong magnetic field within the framework of the two-flavor Nambu--Jona-Lasinio model. Diquarks are constructed through the resummation of quark loop chains using the random phase approximation, while nucleons are treated as bound quark-diquark states described by a relativistic Fadeev equation, using the static approximation for quark exchange interactions. For charged particles, analytical calculations are performed using the Ritus eigenfunction method, which properly takes into account the breakdown of translation invariance that arises from the presence of Schwinger phases. Within this scheme, for definite model parametrizations we obtain numerical predictions for diquark and nucleon masses, which are compared with chiral perturbation theory and lattice QCD results. In addition, numerical estimations for nucleon magnetic moments are obtained.
publishDate 2020
dc.date.none.fl_str_mv 2020-11-18
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/133308
url http://sedici.unlp.edu.ar/handle/10915/133308
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2470-0010
info:eu-repo/semantics/altIdentifier/issn/2470-0029
info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.102.094020
info:eu-repo/semantics/altIdentifier/arxiv/2009.14105
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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