Effects of the anomalous magnetic moments of the quarks on the neutral pion properties within a SU(2) Nambu–Jona Lasinio model

The properties of the neutral pion in quark matter under the influence of an external magnetic field are studied. The effects of the anomalous magnetic moments (AMM) of the quarks at finite density is considered. The inclusion of the AMM into the NJL model gives rise to additional magnetic effects....

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Detalles Bibliográficos
Autor principal: Aguirre, Ricardo Miguel
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Física
Ciencias Exactas
anomalous magnetic moments
quarks
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/133512
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-133512
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Ciencias Exactas
anomalous magnetic moments
quarks
spellingShingle Física
Ciencias Exactas
anomalous magnetic moments
quarks
Aguirre, Ricardo Miguel
Effects of the anomalous magnetic moments of the quarks on the neutral pion properties within a SU(2) Nambu–Jona Lasinio model
topic_facet Física
Ciencias Exactas
anomalous magnetic moments
quarks
description The properties of the neutral pion in quark matter under the influence of an external magnetic field are studied. The effects of the anomalous magnetic moments (AMM) of the quarks at finite density is considered. The inclusion of the AMM into the NJL model gives rise to additional magnetic effects. In particular the Dirac sea produce new divergences in the vacuum contributions, which depend explicitly on the magnetic field. An improper treatment of these contributions is the source of unphysical results, as emphasized in recent investigations. The pion polarization function is evaluated in the random phase approximation using analytic regularization and a subtraction scheme to deal with such divergencies. This procedure is combined with the standard three momentum cutoff, and reduces to it for vanishing magnetic intensity. The pion mass and coupling constant are evaluated for a wide range of magnetic intensity and baryonic density.
format Articulo
Articulo
author Aguirre, Ricardo Miguel
author_facet Aguirre, Ricardo Miguel
author_sort Aguirre, Ricardo Miguel
title Effects of the anomalous magnetic moments of the quarks on the neutral pion properties within a SU(2) Nambu–Jona Lasinio model
title_short Effects of the anomalous magnetic moments of the quarks on the neutral pion properties within a SU(2) Nambu–Jona Lasinio model
title_full Effects of the anomalous magnetic moments of the quarks on the neutral pion properties within a SU(2) Nambu–Jona Lasinio model
title_fullStr Effects of the anomalous magnetic moments of the quarks on the neutral pion properties within a SU(2) Nambu–Jona Lasinio model
title_full_unstemmed Effects of the anomalous magnetic moments of the quarks on the neutral pion properties within a SU(2) Nambu–Jona Lasinio model
title_sort effects of the anomalous magnetic moments of the quarks on the neutral pion properties within a su(2) nambu–jona lasinio model
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/133512
work_keys_str_mv AT aguirrericardomiguel effectsoftheanomalousmagneticmomentsofthequarksontheneutralpionpropertieswithinasu2nambujonalasiniomodel
bdutipo_str Repositorios
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