Coalescence probability is size-dependent

(rationally moderated chaos)

merging 100,000 objects of size 1
randomly select two objects to merge
fractional multiplicative coalescence
P(x1,x2) = P(x1) P(x2|x1)
P(x1) ~ x1^a
P(x2|x1) ~ x2^a, with x1 is excluded (=> asymmetric)
a has the meaning of inverse temperature
higher a => lower temperature => larger clusters
=> freezing (gelation) sooner
a=0 (size-independent):
infinite temperature
very small clusters
take snapshots every 10K size distributions 
(after 10K, 20K,...99.99K mergers)