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arXiv 2602.06342physics.soc-phcond-mat.stat-mech
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均场理论用于异质社会温度下的海德平衡

Mean-Field Theory for Heider Balance under Heterogeneous Social Temperatures

The University of Tokyo(东京大学)

Zhen Li, Yuki Izumida

AI总结:

本文提出一个考虑异质社会温度的海德平衡模型,通过均场方法推导集体意见状态的自洽条件,揭示互动异质性分布对系统宏观行为的影响,建立临界过渡的普遍界限。

摘要:

Heider平衡理论为理解社交网络中友好和敌对关系的形成提供了基础框架。现有随机模型通常假设社会温度均匀,即所有人际互动以相同强度波动。然而,研究表明社交互动高度异质,存在广泛的稳定性、波动性和易变性差异。本文引入一个在完全图上的一般化海德平衡模型,其中每条链接都分配其自身的社会温度。在均场框架下,我们推导出集体意见状态的分布依赖自洽条件,并识别支配极化与非极化配置之间过渡的准则。该框架揭示了整个互动异质性分布如何塑造系统的宏观行为。我们证明了逆温度分布的功能形式,特别是其是否为轻尾或重尾分布,导致相图的质性差异。我们还建立了临界过渡的普遍界限,其中均匀温度极限为逆温度分布的临界均值提供了普遍下界。数值模拟验证了理论预测,并突显了异质性引入的非平凡效应。我们的结果为理解现实社交系统中的结构平衡提供了统一路径,并为纳入均场外波动、外部场和超越完全图的网络拓扑的扩展奠定了基础。

英文摘要:

Heider balance theory provides a fundamental framework for understanding the formation of friendly and hostile relations in social networks. Existing stochastic formulations typically assume a uniform social temperature, implying that all interpersonal relations fluctuate with the same intensity. However, studies show that social interactions are highly heterogeneous, with broad variability in stability, volatility, and susceptibility to change. In this work, we introduce a generalized Heider balance model on a complete graph in which each link is assigned its own social temperature. Within a mean-field formulation, we derive a distribution-dependent self-consistency condition for the collective opinion state and identify the criteria governing the transition between polarized and non-polarized configurations. This framework reveals how the entire distribution of interaction heterogeneity shapes the macroscopic behavior of the system. We show that the functional form of the inverse-temperature distribution, in particular whether it is light-tailed or heavy-tailed, leads to qualitatively distinct phase diagrams. We also establish universal bounds for the critical transition, where the homogeneous-temperature limit provides a universal lower bound for the critical mean of an inverse-temperature distribution governing the transition. Numerical simulations confirm the theoretical predictions and highlight the nontrivial effects introduced by heterogeneity. Our results provide a unified route to understanding structural balance in realistic social systems and lay the groundwork for extensions incorporating fluctuations beyond mean field, external fields, and network topologies beyond the complete graph.

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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