The QCD phase diagram from Schwinger-Dyson equations

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dc.contributor.authorGutierrez, Enif
dc.contributor.authorAhmad, Aftab
dc.contributor.authorAyala, Alejandro
dc.contributor.authorBashir, Adnan
dc.contributor.authorRaya, Alfredo
dc.date.accessioned2025-01-23T21:44:10Z
dc.date.available2025-01-23T21:44:10Z
dc.date.issued2014
dc.description.abstractWe study the phase diagram of quantum chromodynamics (QCD). For this purpose we employ the Schwinger-Dyson equations (SDEs) technique and construct a truncation of the infinite tower of equations by demanding a matching with the lattice results for the quark-anti-quark condensate at finite temperature (T), for zero quark chemical potential (mu), that is, the region where lattice calculations are expected to provide reliable results. We compute the evolution of the phase diagram away from T = 0. To chart the chiral symmetry restoration transition, we follow the evolution of the derivative of the condensate with respect to the temperature as a function of T and mu. The behavior of this thermodynamic variable clearly demonstrates the existence of a cross-over for mu less than a critical value. However, the derivative of the condensate with respect to the temperature develops a singularity near mu approximate to 0.22 GeV marking the onslaught of a first order phase transition characterized by the existence of a critical point. The critical line continues until mu approximate to 0.44 GeV where T-c = 0 and thus chiral symmetry is finally restored. For the deconfinement transition we look for the violation of the axiom of reflection positivity in the quark propagator. The critical end point appears to be the same as observed for the transition to chirally symmetric phase. However, near T = 0 axis, due to lack of data points, we are unable to claim against coincidental chiral symmetry restoration and deconfinement transitions along that axis.
dc.fuente.origenWOS
dc.identifier.doi10.1088/0954-3899/41/7/075002
dc.identifier.eissn1361-6471
dc.identifier.issn0954-3899
dc.identifier.urihttps://doi.org/10.1088/0954-3899/41/7/075002
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101688
dc.identifier.wosidWOS:000338425600003
dc.issue.numero7
dc.language.isoen
dc.revistaJournal of physics g-nuclear and particle physics
dc.rightsacceso restringido
dc.subjectSchwinger-Dyson equations
dc.subjectQCD phase diagram
dc.subjectconfinement and deconfinement
dc.subjectchiral symmetry
dc.subjectchiral condensate
dc.titleThe QCD phase diagram from Schwinger-Dyson equations
dc.typeartículo
dc.volumen41
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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