Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-09-24
Physics
High Energy Physics
High Energy Physics - Phenomenology
8 pages, 8 figures
Scientific paper
We construct an effective model for the QCD equation of state, taking into account chiral symmetry restoration as well as the deconfinement phase transition. The correct asymptotic degrees of freedom at the high and low temperature limits are included (quarks $\leftrightarrow$ hadrons). The model shows a rapid crossover for both order parameters, as is expected from lattice calculations. We then investigate the thermodynamic properties of the model at $\mu_B=0$. All thermodynamic quantities are in qualitative agreement with lattice data, while apparent quantitative differences can be attributed to hadronic contributions and excluded volume corrections.
Schramm Stefan
Steinheimer Jan
Stocker Horst
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