Finite-size scaling study of non-equilibrium percolation

Induced by phase separation in the lattice gas model a transient percolation phenomenon occurs for concentrations c exceeding a critical curve c (corr) p (T, t) which depends both on temperature T and on the time t passed after the quench to a state inside the miscibility gap. A finite-size scaling analysis of extensive Monte Carlo data is carried out to locate c (corr) p (T, t) and to show that the critical behaviour of this percolation transition is consistent with random percolation, contrary to previous suggestions.