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Type: Artigo de periódico
Title: Quark Condensate And Nucleon-antinucleon Phase Transition From Hadronic Models At Finite Temperature
Author: Lourenco O.
Dutra M.
Timoteo V.S.
Delfino A.
Abstract: We investigate different hadronic model parametrizations at high temperature regime. All the models were constructed to reproduce some observables at low temperature. At high temperature this study becomes important once a copious number of antiparticles arises playing an essential role in the high energy heavy-ion collision experiments like RHIC, SPS and LHC. In our study we observe a model dependent first-order phase transition at about 180 MeV. It was also verified that the order parameter, in-medium effective baryon mass, is very similar to the quark condensate as a function of the temperature. This result acquires importance since the quark condensate is the phase transition order parameter from hadronic (massive mesons) to chiral (massless mesons) phases. © 2010 Elsevier B.V.
Rights: fechado
Identifier DOI: 10.1016/j.nuclphysbps.2010.02.058
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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