Details

Autor(en) / Beteiligte

• Pusch, Andreas
• Weber, Sebastian
• Porto, Markus

Titel

Impact of topology on the dynamical organization of cooperation in the prisoner's dilemma game

Ist Teil von

• Physical review. E, Statistical, nonlinear, and soft matter physics, 2008-03, Vol.77 (3 Pt 2), p.036120-036120, Article 036120

Ort / Verlag

United States

Erscheinungsjahr

2008

Quelle

PROLA

Beschreibungen/Notizen

• The way cooperation organizes dynamically strongly depends on the topology of the underlying interaction network. We study this dependence using heterogeneous scale-free networks with different levels of (a) degree-degree correlations and (b) enhanced clustering, where the number of neighbors of connected nodes are correlated and the number of closed triangles are enhanced, respectively. Using these networks, we analyze a finite population analog of the evolutionary replicator dynamics of the prisoner's dilemma, the latter being a two-player game with two strategies, defection and cooperation, whose payoff matrix favors defection. Both topological features significantly change the dynamics with respect to the one observed for fully randomized scale-free networks and can strongly facilitate cooperation even for a large temptation to defect, and should hence be considered as important factors in the evolution and sustainment of cooperation.