Statistical Behavior of Finite-Size Partially Equilibrated Systems
  We examine deviations from Boltzmann-Gibbs statistics for partially equilibrated systems of finite size. We find that such systems are characterized by the Levy distribution whose non-extensivity parameter is related to the number of internally equilibrated subsystems and to correlations among them. This concept is applied to Quark-Gluon Plasma formation. 
Athanasios N. Petridis