q-neighbor Ising model on a polarized network

Abstract

In this paper, we have examined the interplay between the lobby size $q$ in the $q$-neighbor Ising model of opinion formation [Phys. Rev. E 92, 052105] and the level of overlap $v$ of two fully connected graphs. Results suggest that for each lobby size $q \ge 3$ there exists a specific level of overlap $v^*$ which destroys initially polarized clusters of opinions. By performing Monte-Carlo simulations, backed by an analytical approach we show that the dependence of the $v^*$ on the lobby size $q$ is far from trivial in the absence of temperature $T \rightarrow 0$, showing a clear maximum that additionally depends on the parity of $q$. On the other hand, the temperature is a destructive factor, its increase leads to the earlier collapse of polarized clusters but additionally brings a substantial decrease in the level of polarization.