Opinion dynamics: rise and fall of political parties

Details Opinion dynamics: rise and fall of political parties Opinion dynamics: rise and fall of political parties

2004-11-16

arxiv.org/abs/cond-mat/0411427v1

Europhys. Lett. 69, 671 (2005)

Physics

Condensed Matter

Statistical Mechanics

5 pages, 5 figures

Scientific paper

10.1209/epl/i2004-10421-1

We analyze the evolution of political organizations using a model in which agents change their opinions via two competing mechanisms. Two agents may interact and reach consensus, and additionally, individual agents may spontaneously change their opinions by a random, diffusive process. We find three distinct possibilities. For strong diffusion, the distribution of opinions is uniform and no political organizations (parties) are formed. For weak diffusion, parties do form and furthermore, the political landscape continually evolves as small parties merge into larger ones. Without diffusion, a pattern develops: parties have the same size and they possess equal niches. These phenomena are analyzed using pattern formation and scaling techniques.

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