Renormalization group approach to multiparticle density fluctuations

An iterative procedure is developed with the aim of constructing homogeneity rules for the distribution P(ϱ, δ) of the particle density ϱ at resolution scale δ. A single iteration step consists of a change in the normalization point of P(ϱ, δ) followed by a rescaling. Similar transformation rule is introduced for density fluctuations contaminated by Poisson noise. Application of the iterative procedure is given for the Ginzburg-Landau description of phase-transition from the quark-gluon plasma and for random cascading models.