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We investigate properties of strongly interacting matter in a schematic model based on the combined degrees of freedom of a noninteracting hadronic phase and a noninteracting deconfined phase. It is found that, in a finite system, both phases contribute to the thermodynamic state due to fluctuations and that signatures of critical behavior, such as the divergence of statistical quantities, are dampened. The constraint of color neutrality leads to a volume‐dependent shift of the effective critical temperature, which follows a scaling law, independent of the baryochemical potential. According to the model, observable baryon number susceptibilities at a given  T  and  μ  B  strongly depend on the system size. Finally, we compare hadronization conditions from the model with hadrochemical fits to experimental collider data, where a qualitatively similar system size dependence is extracted.

Effects of fluctuations and color neutrality in a finite volume