Charged pseudoscalar and vector meson masses in strong magnetic fields in an extended NJL model

The mass spectrum of π+ and ρ+ mesons in the presence of a static uniform magnetic field B→ is studied within a two-flavor Nambu-Jona-Lasinio-like model. We improve previous calculations, taking into account the effect of Schwinger phases carried by quark propagators and using an expansion of meson...

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Autores: Carlomagno, J.P., Gómez Dumm, D., Izzo Villafañe, M.F., Noguera, Santiago, Scoccola, N.N.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/296971
Acceso en línea:http://hdl.handle.net/10261/296971
Access Level:acceso abierto
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spelling Charged pseudoscalar and vector meson masses in strong magnetic fields in an extended NJL modelCarlomagno, J.P.Gómez Dumm, D.Izzo Villafañe, M.F.Noguera, SantiagoScoccola, N.N.The mass spectrum of π+ and ρ+ mesons in the presence of a static uniform magnetic field B→ is studied within a two-flavor Nambu-Jona-Lasinio-like model. We improve previous calculations, taking into account the effect of Schwinger phases carried by quark propagators and using an expansion of meson fields in terms of the solutions of the corresponding equations of motion for nonzero B. It is shown that the meson polarization functions are diagonal in this basis. Our numerical results for the ρ+ meson spectrum are found to disfavor the existence of a meson condensate induced by the magnetic field. In the case of the π+ meson, π - ρ mixing effects are analyzed for the meson lowest-energy state. The predictions of the model are compared with available lattice QCD results.This work has been partially funded by CONICET (Argentina) under GrantNo. PIP17-700; byANPCyT(Argentina) under Grants No. PICT17-03-0571, No. PICT19-0792, and No. PICT20- 01847; by the National University of La Plata (Argentina) ProjectNo. X824; byMinisterio de Ciencia e Innovación and Agencia Estatal de Investigación (Spain) and European Regional Development Fund Grant No. PID2019– 105439GB-C21; by EU Horizon 2020 Grant No. 824093 (STRONG-2020); and by Conselleria de Innovación, Universidades, Ciencia y Sociedad Digital, Generalitat Valenciana GVA PROMETEO/2021/083.American Physical SocietyConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2023202320222023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/296971reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-105439GB-C21info:eu-repo/grantAgreement/EC/H2020/824093info:eu-repo/grantAgreement/GVA//PROMETEOhttp://dx.doi.org/10.1103/PhysRevD.106.094035Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2969712026-05-22T06:33:51Z
dc.title.none.fl_str_mv Charged pseudoscalar and vector meson masses in strong magnetic fields in an extended NJL model
title Charged pseudoscalar and vector meson masses in strong magnetic fields in an extended NJL model
spellingShingle Charged pseudoscalar and vector meson masses in strong magnetic fields in an extended NJL model
Carlomagno, J.P.
title_short Charged pseudoscalar and vector meson masses in strong magnetic fields in an extended NJL model
title_full Charged pseudoscalar and vector meson masses in strong magnetic fields in an extended NJL model
title_fullStr Charged pseudoscalar and vector meson masses in strong magnetic fields in an extended NJL model
title_full_unstemmed Charged pseudoscalar and vector meson masses in strong magnetic fields in an extended NJL model
title_sort Charged pseudoscalar and vector meson masses in strong magnetic fields in an extended NJL model
dc.creator.none.fl_str_mv Carlomagno, J.P.
Gómez Dumm, D.
Izzo Villafañe, M.F.
Noguera, Santiago
Scoccola, N.N.
author Carlomagno, J.P.
author_facet Carlomagno, J.P.
Gómez Dumm, D.
Izzo Villafañe, M.F.
Noguera, Santiago
Scoccola, N.N.
author_role author
author2 Gómez Dumm, D.
Izzo Villafañe, M.F.
Noguera, Santiago
Scoccola, N.N.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description The mass spectrum of π+ and ρ+ mesons in the presence of a static uniform magnetic field B→ is studied within a two-flavor Nambu-Jona-Lasinio-like model. We improve previous calculations, taking into account the effect of Schwinger phases carried by quark propagators and using an expansion of meson fields in terms of the solutions of the corresponding equations of motion for nonzero B. It is shown that the meson polarization functions are diagonal in this basis. Our numerical results for the ρ+ meson spectrum are found to disfavor the existence of a meson condensate induced by the magnetic field. In the case of the π+ meson, π - ρ mixing effects are analyzed for the meson lowest-energy state. The predictions of the model are compared with available lattice QCD results.
publishDate 2022
dc.date.none.fl_str_mv 2022
2023
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/296971
url http://hdl.handle.net/10261/296971
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
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info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-105439GB-C21
info:eu-repo/grantAgreement/EC/H2020/824093
info:eu-repo/grantAgreement/GVA//PROMETEO
http://dx.doi.org/10.1103/PhysRevD.106.094035
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
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