Abstract
A particular case of a cellular automata-based model of two-state opinion formation in social groups with a strong leader is studied. We consider a 2D Euclidian geometry of “social space” and mutual interactions ∞ 1/r n. The model shows an interesting dynamics which can be analytically calculated. There are two stable states of the system: a cluster around the leader and unification. Unstable clusters may also appear. A variation in parameters such as the leader's strength or the “social temperature” can change the size of a cluster or, when they reach some critical values, make the system jump into another state. For a certain range of parameters the system exhibits bistability and hysteresis phenomena. We obtained explicit formulas for the cluster size, critical leader's strength, and critical “social temperature.” These analytical results are verified by computer simulations.
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Kacperski, K., Holyst, J.A. Phase transitions and hysteresis in a cellular automata-based model of opinion formation. J Stat Phys 84, 169–189 (1996). https://doi.org/10.1007/BF02179581
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DOI: https://doi.org/10.1007/BF02179581