Chiral QCD phase transition in nuclear collisions

The characteristic aspects of multiparticle states generated at \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document} $T = T_c$\end{document}, as a result of chiral QCD phase transition, are studied in the framework of the O(4) \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document} $\phi^4$\end{document} theory. Predictions concerning critical events, in connection with current and future experiments with ultrarelativistic heavy ions, are presented.