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Equations of state based on recent lattice QCD results at vanishing net-baryon density

We calculate various equations of state for QCD matter at vanishing net-baryon density starting from recent lattice QCD results at high temperatures, going to low temperatures using a hadron resonance gas (HRG) model to describe the confined phase. In order to have a better description of the experi...

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Detalles Bibliográficos
Autores principales: Alba, P, Alberico, W, Beraudo, A, Bluhm, M, Ratti, C
Lenguaje:eng
Publicado: 2014
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1742-6596/527/1/012014
http://cds.cern.ch/record/2025757
Descripción
Sumario:We calculate various equations of state for QCD matter at vanishing net-baryon density starting from recent lattice QCD results at high temperatures, going to low temperatures using a hadron resonance gas (HRG) model to describe the confined phase. In order to have a better description of the experimental situation we use an implementation of the HRG model that allows the system to switch, after the chemical freeze-out, to a situation of partial chemical equilibrium. We explore the possibility of different freeze-out temperatures. Our results can be used in the hydrodynamic modeling of relativistic heavy-ion collisions at the LHC and at the highest RHIC beam energies.