Chiral phase transition in a covariant nonlocal NJL model
- Autores
- General, I.; Gómez Dumm, Daniel Alberto; Scoccola, Norberto Nerio
- Año de publicación
- 2001
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The properties of the chiral phase transition at finite temperature and chemical potential are investigated within a nonlocal covariant extension of the Nambu-Jona-Lasinio model based on a separable quark-quark interaction. We consider both the situation in which the Minkowski quark propagator has poles at real energies and the case where only complex poles appear. In the literature, the latter has been proposed as a realization of confinement. In both cases, the behaviour of the physical quantities as functions of T and μis found to be quite similar. In particular, for low values of T the chiral transition is always of first order and, for finite quark masses, at certain "end point" the transition turns into a smooth crossover. In the chiral limit, this "end point" becomes a "tricritical" point. Our predictions for the position of these points are similar, although somewhat smaller, than previous estimates. Finally, the relation between the deconfining transition and chiral restoration is also discussed.
Instituto de Física La Plata - Materia
-
Física
Chiral phase transition
Finite temperature and/or density
Nonlocal nambu-jona-lasinio model - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/95134
Ver los metadatos del registro completo
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Chiral phase transition in a covariant nonlocal NJL modelGeneral, I.Gómez Dumm, Daniel AlbertoScoccola, Norberto NerioFísicaChiral phase transitionFinite temperature and/or densityNonlocal nambu-jona-lasinio modelThe properties of the chiral phase transition at finite temperature and chemical potential are investigated within a nonlocal covariant extension of the Nambu-Jona-Lasinio model based on a separable quark-quark interaction. We consider both the situation in which the Minkowski quark propagator has poles at real energies and the case where only complex poles appear. In the literature, the latter has been proposed as a realization of confinement. In both cases, the behaviour of the physical quantities as functions of T and μis found to be quite similar. In particular, for low values of T the chiral transition is always of first order and, for finite quark masses, at certain "end point" the transition turns into a smooth crossover. In the chiral limit, this "end point" becomes a "tricritical" point. Our predictions for the position of these points are similar, although somewhat smaller, than previous estimates. Finally, the relation between the deconfining transition and chiral restoration is also discussed.Instituto de Física La Plata2001-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf267-274http://sedici.unlp.edu.ar/handle/10915/95134enginfo:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/71720info:eu-repo/semantics/altIdentifier/issn/0370-2693info:eu-repo/semantics/altIdentifier/doi/10.1016/S0370-2693(01)00240-4info:eu-repo/semantics/altIdentifier/hdl/11336/71720info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:20:20Zoai:sedici.unlp.edu.ar:10915/95134Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:20:21.274SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Chiral phase transition in a covariant nonlocal NJL model |
title |
Chiral phase transition in a covariant nonlocal NJL model |
spellingShingle |
Chiral phase transition in a covariant nonlocal NJL model General, I. Física Chiral phase transition Finite temperature and/or density Nonlocal nambu-jona-lasinio model |
title_short |
Chiral phase transition in a covariant nonlocal NJL model |
title_full |
Chiral phase transition in a covariant nonlocal NJL model |
title_fullStr |
Chiral phase transition in a covariant nonlocal NJL model |
title_full_unstemmed |
Chiral phase transition in a covariant nonlocal NJL model |
title_sort |
Chiral phase transition in a covariant nonlocal NJL model |
dc.creator.none.fl_str_mv |
General, I. Gómez Dumm, Daniel Alberto Scoccola, Norberto Nerio |
author |
General, I. |
author_facet |
General, I. 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 Chiral phase transition Finite temperature and/or density Nonlocal nambu-jona-lasinio model |
topic |
Física Chiral phase transition Finite temperature and/or density Nonlocal nambu-jona-lasinio model |
dc.description.none.fl_txt_mv |
The properties of the chiral phase transition at finite temperature and chemical potential are investigated within a nonlocal covariant extension of the Nambu-Jona-Lasinio model based on a separable quark-quark interaction. We consider both the situation in which the Minkowski quark propagator has poles at real energies and the case where only complex poles appear. In the literature, the latter has been proposed as a realization of confinement. In both cases, the behaviour of the physical quantities as functions of T and μis found to be quite similar. In particular, for low values of T the chiral transition is always of first order and, for finite quark masses, at certain "end point" the transition turns into a smooth crossover. In the chiral limit, this "end point" becomes a "tricritical" point. Our predictions for the position of these points are similar, although somewhat smaller, than previous estimates. Finally, the relation between the deconfining transition and chiral restoration is also discussed. Instituto de Física La Plata |
description |
The properties of the chiral phase transition at finite temperature and chemical potential are investigated within a nonlocal covariant extension of the Nambu-Jona-Lasinio model based on a separable quark-quark interaction. We consider both the situation in which the Minkowski quark propagator has poles at real energies and the case where only complex poles appear. In the literature, the latter has been proposed as a realization of confinement. In both cases, the behaviour of the physical quantities as functions of T and μis found to be quite similar. In particular, for low values of T the chiral transition is always of first order and, for finite quark masses, at certain "end point" the transition turns into a smooth crossover. In the chiral limit, this "end point" becomes a "tricritical" point. Our predictions for the position of these points are similar, although somewhat smaller, than previous estimates. Finally, the relation between the deconfining transition and chiral restoration is also discussed. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001-05 |
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/10915/95134 |
url |
http://sedici.unlp.edu.ar/handle/10915/95134 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://ri.conicet.gov.ar/11336/71720 info:eu-repo/semantics/altIdentifier/issn/0370-2693 info:eu-repo/semantics/altIdentifier/doi/10.1016/S0370-2693(01)00240-4 info:eu-repo/semantics/altIdentifier/hdl/11336/71720 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
dc.format.none.fl_str_mv |
application/pdf 267-274 |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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