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To understand the evolution of well-organized social behaviour, we must first understand the mechanism by which collective behaviour is established. In this study, the mechanisms of collective behaviour in a colony of social insects were studied in terms of the transition probability between active and inactive states, which is linked to mutual interactions. The active and inactive states of the social insects were statistically extracted from the velocity profiles. From the duration distributions of the two states, we found that (1) the durations of active and inactive states follow an exponential law, and (2) pair interactions increase the transition probability from inactive to active states. The regulation of the transition probability by pair interactions suggests that such interactions control the populations of active and inactive workers in the colony.

journal of the physical society of japan

Effect of Pair Interactions on Transition Probabilities between Inactive and Active States — Achieving Collective Behaviour via Pair Interactions in Social Insects —