Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2000-07-19
Nucl.Phys. A681 (2001) 49-55
Physics
Nuclear Physics
Nuclear Theory
LaTeX 7 pages, for the Proceedings of CRIS 2000, 3rd Catania Relativistic Ion Studies
Scientific paper
10.1016/S0375-9474(00)00480-2
Critical behaviors of quark-hadron phase transition in high-energy heavy-ion collisions are investigated with the aim of identifying hadronic observables. The surface of the plasma cylinder is mapped onto a 2D lattice. The Ising model is used to simulate configurations corresponding to cross-over transitions in accordance to the findings of QCD lattice gauge theory. Hadrons are formed in clusters of all sizes. Various measures are examined to quantify the fluctuations of the cluster sizes and of the voids among the clusters. The canonical power-law behaviors near the critical temperature are found for appropriately chosen measures. Since the temperature is not directly observable, attention is given to the problem of finding observable measures. It is demonstrated that for the measures considered the dependence on the final-state randomization is weak. Thus the critical behavior of the measures proposed is likely to survive the scattering effect of the hadron gas in the final state.
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