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How parameters and regularization affect the Polyakov–Nambu–Jona-Lasinio model phase diagram and thermodynamic quantities

2010-01-15Artigo científico Acesso aberto
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datacite.subject.fosCiências Naturais::Ciências Físicas
datacite.subject.sdg03:Saúde de Qualidade
datacite.subject.sdg07:Energias Renováveis e Acessíveis
datacite.subject.sdg11:Cidades e Comunidades Sustentáveis
dc.contributor.authorCosta, P.
dc.contributor.authorHansen, H.
dc.contributor.authorRuivo, M. C.
dc.contributor.authorSousa, C. A. de
dc.date.accessioned2025-11-18T18:57:35Z
dc.date.available2025-11-18T18:57:35Z
dc.date.issued2010-01-15
dc.descriptionFonte: https://arxiv.org/abs/0909.5124
dc.description.abstractWe explore the phase diagram and the critical behavior of QCD thermodynamic quantities in the context of the so-called Polyakov-Nambu-Jona-Lasinio model. We show that this improved field theoretical model is a successful candidate for studying the equation of state and the critical behavior around the critical endpoint. We argue that a convenient choice of the model parameters is crucial to get the correct description of isentropic trajectories. The effects of the regularization procedure in several thermodynamic quantities is also analyzed. The results are compared with simple thermodynamic expectations and lattice data.eng
dc.description.sponsorshipWork supported by grant SFRH/BPD/23252/2005 (P. Costa), Centro de Física Computacional, FCT under projects POCI/FP/81936/2007 (H. Hansen) and CERN/FP/83644/2008.
dc.identifier.citationCosta, Pedro & Hansen, Hardaye & Ruivo, Maria & Sousa, Celia. (2010). How parameters and regularization affect the PNJL model phase diagram and thermodynamic quantities. Phys. Rev. D. 81. DOI: https://doi.org/10.1103/PhysRevD.81.016007.
dc.identifier.doi10.1103/physrevd.81.016007
dc.identifier.eissn1550-2368
dc.identifier.issn1550-7998
dc.identifier.urihttp://hdl.handle.net/10400.8/14661
dc.language.isoeng
dc.peerreviewedyes
dc.publisherAmerican Physical Society
dc.relation.hasversionhttps://journals.aps.org/prd/abstract/10.1103/PhysRevD.81.016007
dc.relation.ispartofPhysical Review D
dc.rights.uriN/A
dc.subjectPolyakov-Nambu-Jona-Lasinio model
dc.subjectQCD
dc.subjectequation of state
dc.subjectcritical behavior
dc.subjectcritical endpoint
dc.titleHow parameters and regularization affect the Polyakov–Nambu–Jona-Lasinio model phase diagram and thermodynamic quantitieseng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage27
oaire.citation.startPage1
oaire.citation.titlePhysical Review D (particles, fields, gravitation, and cosmology)
oaire.versionhttp://purl.org/coar/version/c_ab4af688f83e57aa
person.familyNameCosta
person.givenNamePedro
person.identifier.ciencia-id5916-434C-C367
person.identifier.orcid0000-0003-4809-6542
person.identifier.scopus-author-id26642948700
relation.isAuthorOfPublication6c1e3356-f60b-47f5-9efc-6b69569b5581
relation.isAuthorOfPublication.latestForDiscovery6c1e3356-f60b-47f5-9efc-6b69569b5581

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We explore the phase diagram and the critical behavior of QCD thermodynamic quantities in the context of the so-called Polyakov-Nambu-Jona-Lasinio model. We show that this improved field theoretical model is a successful candidate for studying the equation of state and the critical behavior around the critical endpoint. We argue that a convenient choice of the model parameters is crucial to get the correct description of isentropic trajectories. The effects of the regularization procedure in several thermodynamic quantities is also analyzed. The results are compared with simple thermodynamic expectations and lattice data.
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