Masses of magnetized pseudoscalar and vector mesons in an extended NJL model: The role of axial vector mesons

Autores
Coppola, Máximo; Gomez Dumm, Daniel Alberto; Noguera, S.; Scoccola, Norberto Nerio
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the mass spectrum of light pseudoscalar and vector mesons in the presence of an external uniform magnetic field B, considering the effects of the mixing with the axial-vector meson sector. The analysis is performed within a two-flavor NJL-like model which includes isoscalar and isovector couplings together with a flavor mixing ’t Hooft-like term. The effect of the magnetic field on charged particles is taken into account by retaining the Schwinger phases carried by quark propagators, and expanding the corresponding meson fields in proper Ritus-like bases. The spin-isospin and spin-flavor decomposition of meson mass states is also analyzed. For neutral pion masses it is shown that the mixing with axial vector mesons improves previous theoretical results, leading to a monotonic decreasing behavior with B that is in good qualitative agreement with lattice QCD (LQCD) calculations, both for the case of constant or B-dependent couplings. Regarding charged pions, it is seen that the mixing softens the enhancement of their mass with B. As a consequence, the energy becomes lower than the one corresponding to a pointlike pion, improving the agreement with LQCD results. The agreement is also improved for the magnetic behavior of the lowest ρ+ energy state, which does not vanish for the considered range of values of B---afact that can be relevant in connection with the occurrence of meson condensation for strong magnetic fields.
Fil: Coppola, Máximo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Constituyentes); Argentina
Fil: Gomez Dumm, Daniel Alberto. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Noguera, S.. Universidad de Valencia; España
Fil: Scoccola, Norberto Nerio. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Constituyentes); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Quantum chromodynamics
Quark models
Strong magnetic fields
Mesons
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/267938
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/267938
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Masses of magnetized pseudoscalar and vector mesons in an extended NJL model: The role of axial vector mesonsCoppola, MáximoGomez Dumm, Daniel AlbertoNoguera, S.Scoccola, Norberto NerioQuantum chromodynamicsQuark modelsStrong magnetic fieldsMesonshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study the mass spectrum of light pseudoscalar and vector mesons in the presence of an external uniform magnetic field B, considering the effects of the mixing with the axial-vector meson sector. The analysis is performed within a two-flavor NJL-like model which includes isoscalar and isovector couplings together with a flavor mixing ’t Hooft-like term. The effect of the magnetic field on charged particles is taken into account by retaining the Schwinger phases carried by quark propagators, and expanding the corresponding meson fields in proper Ritus-like bases. The spin-isospin and spin-flavor decomposition of meson mass states is also analyzed. For neutral pion masses it is shown that the mixing with axial vector mesons improves previous theoretical results, leading to a monotonic decreasing behavior with B that is in good qualitative agreement with lattice QCD (LQCD) calculations, both for the case of constant or B-dependent couplings. Regarding charged pions, it is seen that the mixing softens the enhancement of their mass with B. As a consequence, the energy becomes lower than the one corresponding to a pointlike pion, improving the agreement with LQCD results. The agreement is also improved for the magnetic behavior of the lowest ρ+ energy state, which does not vanish for the considered range of values of B---afact that can be relevant in connection with the occurrence of meson condensation for strong magnetic fields.Fil: Coppola, Máximo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Constituyentes); ArgentinaFil: Gomez Dumm, Daniel Alberto. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Noguera, S.. Universidad de Valencia; EspañaFil: Scoccola, Norberto Nerio. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Constituyentes); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaAmerican Physical Society2024-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/267938Coppola, Máximo; Gomez Dumm, Daniel Alberto; Noguera, S.; Scoccola, Norberto Nerio; Masses of magnetized pseudoscalar and vector mesons in an extended NJL model: The role of axial vector mesons; American Physical Society; Physical Review D; 109; 5; 3-2024; 1-302470-00102470-0029CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.aps.org/doi/10.1103/PhysRevD.109.054014info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.109.054014info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:10:30Zoai:ri.conicet.gov.ar:11336/267938instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:10:31.13CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Masses of magnetized pseudoscalar and vector mesons in an extended NJL model: The role of axial vector mesons
title Masses of magnetized pseudoscalar and vector mesons in an extended NJL model: The role of axial vector mesons
spellingShingle Masses of magnetized pseudoscalar and vector mesons in an extended NJL model: The role of axial vector mesons
Coppola, Máximo
Quantum chromodynamics
Quark models
Strong magnetic fields
Mesons
title_short Masses of magnetized pseudoscalar and vector mesons in an extended NJL model: The role of axial vector mesons
title_full Masses of magnetized pseudoscalar and vector mesons in an extended NJL model: The role of axial vector mesons
title_fullStr Masses of magnetized pseudoscalar and vector mesons in an extended NJL model: The role of axial vector mesons
title_full_unstemmed Masses of magnetized pseudoscalar and vector mesons in an extended NJL model: The role of axial vector mesons
title_sort Masses of magnetized pseudoscalar and vector mesons in an extended NJL model: The role of axial vector mesons
dc.creator.none.fl_str_mv Coppola, Máximo
Gomez Dumm, Daniel Alberto
Noguera, S.
Scoccola, Norberto Nerio
author Coppola, Máximo
author_facet Coppola, Máximo
Gomez Dumm, Daniel Alberto
Noguera, S.
Scoccola, Norberto Nerio
author_role author
author2 Gomez Dumm, Daniel Alberto
Noguera, S.
Scoccola, Norberto Nerio
author2_role author
author
author
dc.subject.none.fl_str_mv Quantum chromodynamics
Quark models
Strong magnetic fields
Mesons
topic Quantum chromodynamics
Quark models
Strong magnetic fields
Mesons
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We study the mass spectrum of light pseudoscalar and vector mesons in the presence of an external uniform magnetic field B, considering the effects of the mixing with the axial-vector meson sector. The analysis is performed within a two-flavor NJL-like model which includes isoscalar and isovector couplings together with a flavor mixing ’t Hooft-like term. The effect of the magnetic field on charged particles is taken into account by retaining the Schwinger phases carried by quark propagators, and expanding the corresponding meson fields in proper Ritus-like bases. The spin-isospin and spin-flavor decomposition of meson mass states is also analyzed. For neutral pion masses it is shown that the mixing with axial vector mesons improves previous theoretical results, leading to a monotonic decreasing behavior with B that is in good qualitative agreement with lattice QCD (LQCD) calculations, both for the case of constant or B-dependent couplings. Regarding charged pions, it is seen that the mixing softens the enhancement of their mass with B. As a consequence, the energy becomes lower than the one corresponding to a pointlike pion, improving the agreement with LQCD results. The agreement is also improved for the magnetic behavior of the lowest ρ+ energy state, which does not vanish for the considered range of values of B---afact that can be relevant in connection with the occurrence of meson condensation for strong magnetic fields.
Fil: Coppola, Máximo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Constituyentes); Argentina
Fil: Gomez Dumm, Daniel Alberto. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Noguera, S.. Universidad de Valencia; España
Fil: Scoccola, Norberto Nerio. Comisión Nacional de Energía Atómica. Gerencia del Área de Investigaciones y Aplicaciones no Nucleares. Gerencia de Física (Centro Atómico Constituyentes); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description We study the mass spectrum of light pseudoscalar and vector mesons in the presence of an external uniform magnetic field B, considering the effects of the mixing with the axial-vector meson sector. The analysis is performed within a two-flavor NJL-like model which includes isoscalar and isovector couplings together with a flavor mixing ’t Hooft-like term. The effect of the magnetic field on charged particles is taken into account by retaining the Schwinger phases carried by quark propagators, and expanding the corresponding meson fields in proper Ritus-like bases. The spin-isospin and spin-flavor decomposition of meson mass states is also analyzed. For neutral pion masses it is shown that the mixing with axial vector mesons improves previous theoretical results, leading to a monotonic decreasing behavior with B that is in good qualitative agreement with lattice QCD (LQCD) calculations, both for the case of constant or B-dependent couplings. Regarding charged pions, it is seen that the mixing softens the enhancement of their mass with B. As a consequence, the energy becomes lower than the one corresponding to a pointlike pion, improving the agreement with LQCD results. The agreement is also improved for the magnetic behavior of the lowest ρ+ energy state, which does not vanish for the considered range of values of B---afact that can be relevant in connection with the occurrence of meson condensation for strong magnetic fields.
publishDate 2024
dc.date.none.fl_str_mv 2024-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/267938
Coppola, Máximo; Gomez Dumm, Daniel Alberto; Noguera, S.; Scoccola, Norberto Nerio; Masses of magnetized pseudoscalar and vector mesons in an extended NJL model: The role of axial vector mesons; American Physical Society; Physical Review D; 109; 5; 3-2024; 1-30
2470-0010
2470-0029
CONICET Digital
CONICET
url http://hdl.handle.net/11336/267938
identifier_str_mv Coppola, Máximo; Gomez Dumm, Daniel Alberto; Noguera, S.; Scoccola, Norberto Nerio; Masses of magnetized pseudoscalar and vector mesons in an extended NJL model: The role of axial vector mesons; American Physical Society; Physical Review D; 109; 5; 3-2024; 1-30
2470-0010
2470-0029
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://link.aps.org/doi/10.1103/PhysRevD.109.054014
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.109.054014
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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