arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1104.4696physics.soc-phcond-mat.stat-mechcs.SI
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领域大小依赖的观点动力学模型:新特征和新普适类

Opinion dynamics model with domain size dependent dynamics: novel features and new universality class

Soham Biswas, Parongama Sen, Purusattam Ray

摘要:

最近已经引入了一种用于观点动力学的模型(模型I),其中根据个体的相邻域(具有相同观点的群体)的大小来确定个体的二元观点。等效伊辛模型的粗化动力学表现出幂律行为,并已被发现属于一个新的普适类的动力学指数$z=1.0 \pm 0.01$和持久性指数$θ\simeq 0.235$在一维。已经发现的临界行为是强大的退火无序,已被研究的各种各样的。此外,通过将模型I映射到一个一维随机游走者系统,该系统倾向于以概率$ε$向最近的邻居行走,我们发现对于任何$ε> 0.5$,模型I的动力学行为在很长一段时间内都是普遍的。

英文摘要:

A model for opinion dynamics (Model I) has been recently introduced in which the binary opinions of the individuals are determined according to the size of their neighboring domains (population having the same opinion). The coarsening dynamics of the equivalent Ising model shows power law behavior and has been found to belong to a new universality class with the dynamic exponent $z=1.0 \pm 0.01$ and persistence exponent $θ\simeq 0.235$ in one dimension. The critical behavior has been found to be robust for a large variety of annealed disorder that has been studied. Further, by mapping Model I to a system of random walkers in one dimension with a tendency to walk towards their nearest neighbour with probability $ε$, we find that for any $ε> 0.5$, the Model I dynamical behaviour is prevalent at long times.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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