Figure 2
From: A novel framework of classical and quantum prisoner’s dilemma games on coupled networks

Given α = 0.8, the stationary fraction of different strategies as a function of b when γ takes different values for PD and QPD.
(a) is the result of ρC of PD on network G1; (b–d) correspond to ρC, ρD and ρQ of QPD on network G2, respectively. Each data presented is the average of 100 realizations.