Diquarks and nucleons under strong magnetic fields in the NJL model

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 treate...

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Detalles Bibliográficos
Autores principales: Coppola, Máximo, Gómez Dumm, Daniel Alberto, Scoccola, Norberto Nerio
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Física
Ciencias Exactas
magnetic field
quantum chromodynamics
Ritus eigenfunction method
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/133308
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-133308
record_format dspace
spelling I19-R120-10915-1333082023-05-12T16:09:13Z http://sedici.unlp.edu.ar/handle/10915/133308 issn:2470-0010 issn:2470-0029 Diquarks and nucleons under strong magnetic fields in the NJL model Coppola, Máximo Gómez Dumm, Daniel Alberto Scoccola, Norberto Nerio 2020-11-18 2022-03-25T17:37:02Z en Física Ciencias Exactas magnetic field quantum chromodynamics Ritus eigenfunction method 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 Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Ciencias Exactas
magnetic field
quantum chromodynamics
Ritus eigenfunction method
spellingShingle Física
Ciencias Exactas
magnetic field
quantum chromodynamics
Ritus eigenfunction method
Coppola, Máximo
Gómez Dumm, Daniel Alberto
Scoccola, Norberto Nerio
Diquarks and nucleons under strong magnetic fields in the NJL model
topic_facet Física
Ciencias Exactas
magnetic field
quantum chromodynamics
Ritus eigenfunction method
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.
format Articulo
Articulo
author Coppola, Máximo
Gómez Dumm, Daniel Alberto
Scoccola, Norberto Nerio
author_facet Coppola, Máximo
Gómez Dumm, Daniel Alberto
Scoccola, Norberto Nerio
author_sort Coppola, Máximo
title Diquarks and nucleons under strong magnetic fields in the NJL model
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
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/133308
work_keys_str_mv AT coppolamaximo diquarksandnucleonsunderstrongmagneticfieldsinthenjlmodel
AT gomezdummdanielalberto diquarksandnucleonsunderstrongmagneticfieldsinthenjlmodel
AT scoccolanorbertonerio diquarksandnucleonsunderstrongmagneticfieldsinthenjlmodel
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