FIG. 3.

(a) Mass distribution of doubly infected clusters at the threshold $p_c=〈k〉/(〈k^2〉-〈k〉)=0.43388$. The number of realizations is at least $N_r={10}^5$. The solid straight line represents the decay $n^{-1.5}$. (b) Probability $P_{ab}$ of forming a giant cluster (with size larger than $0.05N$) as a function of $p$ and system sizes ranging (top to bottom) from $N={10}^4$ to $N={10}^6$. The number of realizations is $N_r=2000$. (c) Plot of the size of the giant cluster as a function of $N$ for $p=p_c$, showing a linear growth. All data are for $\gamma =7$ and $q=0.99$.