Two-Agent Games on Graphs

Abstract: We study the dynamics of evolution of points of agents placed in the vertices of a graph within the rules of two-agent units of competition where an edge is randomly chosen and the agent with higher points gets a new point with a probability $p$. The model is closely connected to generalized vertex models and anti-ferromagnetic Potts models at zero temperature. After studying the most general properties for generic graphs we confine the study to discrete d-dimensional tori. We mainly focus on the ring and torus graphs.