The statistics of fixation times for systems with recruitment
  We investigate the statistics of the time taken for a system driven by recruitment to reach fixation. Our model describes a series of experiments where a population is confronted with two identical options, resulting in the system fixating on one of the options. For a specific population size, we show that the time distribution behaves like an inverse Gaussian with an exponential decay. Varying the population size reveals that the timescale of the decay depends on the population size and allows the critical population number, below which fixation occurs, to be estimated from experimental data. 
Tommaso Biancalani, Louise Dyson and Alan J. McKane
cond-mat.stat-mech q-bio.PE