Shear and bulk viscosities of quark matter from quark-meson fluctuations in the Nambu-Jona-Lasinio model

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorJohann Wolfgang Goethe-Universität-
Autor(es): dc.creatorGhosh, Sabyasachi-
Autor(es): dc.creatorPeixoto, Thiago C.-
Autor(es): dc.creatorRoy, Victor-
Autor(es): dc.creatorSerna, Fernando E.-
Autor(es): dc.creatorKrein, Gastão-
Data de aceite: dc.date.accessioned2025-08-21T15:37:35Z-
Data de disponibilização: dc.date.available2025-08-21T15:37:35Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2016-04-13-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1103/PhysRevC.93.045205-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/228146-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/228146-
Descrição: dc.descriptionWe have calculated the temperature dependence of shear η and bulk ζ viscosities of quark matter due to quark-meson fluctuations. The quark thermal width originating from quantum fluctuations of quark-π and quark-σ loops at finite temperature is calculated with the formalism of real-time thermal field theory. Temperature-dependent constituent-quark and meson masses and quark-meson couplings are obtained in the Nambu-Jona-Lasinio model. We found a nontrivial influence of the temperature-dependent masses and couplings on the Landau-cut structure of the quark self-energy. Our results for the ratios η/s and ζ/s, where s is the entropy density (also determined in the Nambu-Jona-Lasinio model in the quasiparticle approximation), are in fair agreement with results of the literature obtained from different models and techniques. In particular, our result for η/s has a minimum very close to the quantum lower bound, η/s=1/4π.-
Descrição: dc.descriptionInstituto de Física Teórica Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271 Bloco II-
Descrição: dc.descriptionInstitut für Theoretische Physik Johann Wolfgang Goethe-Universität, Max-von-Laue-Straße 1-
Descrição: dc.descriptionInstituto de Física Teórica Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271 Bloco II-
Idioma: dc.languageen-
Relação: dc.relationPhysical Review C-
???dc.source???: dc.sourceScopus-
Título: dc.titleShear and bulk viscosities of quark matter from quark-meson fluctuations in the Nambu-Jona-Lasinio model-
Tipo de arquivo: dc.typelivro digital-
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