Thermodynamical consistency of quasiparticle model at finite baryon density

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dc.contributor.authorMa, Hong-Hao [UNESP]
dc.contributor.authorLin, Kai
dc.contributor.authorQian, Wei-Liang [UNESP]
dc.contributor.authorHama, Yogiro
dc.contributor.authorKodama, Takeshi
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionChina University of Geosciences
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionYangzhou University
dc.contributor.institutionUniversidade Federal do Rio de Janeiro (UFRJ)
dc.contributor.institutionUniversidade Federal Fluminense (UFF)
dc.date.accessioned2022-04-28T19:27:28Z
dc.date.available2022-04-28T19:27:28Z
dc.date.issued2019-07-24
dc.description.abstractIn this work, we revisit the thermodynamical self-consistency of the quasiparticle model with the finite baryon chemical potential adjusted to lattice QCD calculations. Here we investigate the possibility that the effective quasiparticle mass is also a function of its momentum k, in addition to temperature T and chemical potential μ. It is found that the thermodynamic consistency can be expressed in terms of an integrodifferential equation concerning k, T, and μ. We further discuss two special solutions, both can be viewed as a sufficient condition for the thermodynamical consistency, while expressed in terms of a particle differential equation. The first case is shown to be equivalent to those previously discussed by Peshier et al. The second one, obtained through an ad hoc assumption, is an intrinsically different solution where the particle mass is momentum dependent. These equations can be solved by using boundary condition determined by the lattice QCD data at vanishing baryon chemical potential. By numerical calculations, we show that both solutions can reasonably reproduce the recent lattice QCD results of the Wuppertal-Budapest and HotQCD Collaborations, and in particular, those concerning finite baryon density. Possible implications are discussed.en
dc.description.affiliationFaculdade de Engenharia de Guaratinguetá Universidade Estadual Paulista
dc.description.affiliationInstitute of Geophysics and Geoinformatics China University of Geosciences
dc.description.affiliationEscola de Engenharia de Lorena Universidade de São Paulo
dc.description.affiliationCenter for Gravitation and Cosmology College of Physical Science and Technology Yangzhou University
dc.description.affiliationInstituto de Física Universidade de São Paulo, C.P. 66318
dc.description.affiliationInstituto de Física Universidade Federal Do Rio de Janeiro, C.P. 68528
dc.description.affiliationInstituto de Física Universidade Federal Fluminense
dc.description.affiliationUnespFaculdade de Engenharia de Guaratinguetá Universidade Estadual Paulista
dc.identifierhttp://dx.doi.org/10.1103/PhysRevC.100.015206
dc.identifier.citationPhysical Review C, v. 100, n. 1, 2019.
dc.identifier.doi10.1103/PhysRevC.100.015206
dc.identifier.issn2469-9993
dc.identifier.issn2469-9985
dc.identifier.scopus2-s2.0-85069914411
dc.identifier.urihttp://hdl.handle.net/11449/221332
dc.language.isoeng
dc.relation.ispartofPhysical Review C
dc.sourceScopus
dc.titleThermodynamical consistency of quasiparticle model at finite baryon densityen
dc.typeArtigo

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