We study the finite size effects on the deconfinement phase transition (DPT) of hot and/or dense hadronic matter, using a simple thermodynamic model based on the assumption of coexistence of confined and deconfined phases in a finite volume, including the color singleteness condition (CSC). It turns out that in a finite size system, all singularities occuring in some physical quantities in the thermodynamic limit (TL) (V→∞) are smoothed out. For the temperature driven DPT, an analysis of the finite size scaling (FSS) behavior at criticality of some characteristic quantities allows us to determine the scaling critical exponents characterizing the DPT. The obtained results are in good agreement with those predicted by other studies for a first-order phase transition.
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