A criterion for the order of QGP phase transition

Based on the extended Ginzburg-Landau model, it is shown that the dependences of the scaled factorial moments ln Fq on phase space intervals are different for first- and second-order QGP phase transitions. When ln Fq are fitted to polynomials of X ≡ δ1/3, the relative sign between the fitted coefficients can be used to judge the order of phase transitions