Phase diagrams for Prisoner's Dilemma game on two-dimensional lattices

Details Phase diagrams for Prisoner's Dilemma game on two-dimensional lattices Phase diagrams for Prisoner's Dilemma game on two-dimensional lattices

2005-06-17

arxiv.org/abs/cond-mat/0506433v1

Phys. Rev. E 72 (2005) 047107

Physics

Condensed Matter

Statistical Mechanics

4 pages, 5 figures

Scientific paper

10.1103/PhysRevE.72.047107

The effects of payoffs and noise on the maintenance of cooperative behavior are studied in an evolutionary Prisoner's Dilemma game with players located on the sites of different two-dimensional lattices. This system exhibits a phase transition from a mixed state of cooperators and defectors to a homogeneous one where only the defectors remain alive. Using systematic Monte Carlo simulations and different levels of the generalized mean-field approximations we have determined the phase boundaries (critical points) separating the two phases on the plane of the temperature (noise) and temptation to choose defection. In the zero temperature limit this analysis suggests that the cooperation can be sustained only for those connectivity structures where three-site clique percolation occurs.

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