Coherence resonance in a spatial prisoner's dilemma game

Details Coherence resonance in a spatial prisoner's dilemma game Coherence resonance in a spatial prisoner's dilemma game

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006njph....8...22p&link_type=abstract

New Journal of Physics, Volume 8, Issue 2, pp. 22 (2006).

Physics

66

Scientific paper

We study effects of additive spatiotemporal random variations, introduced to the payoffs of a spatial prisoner's dilemma game, on the evolution of cooperation. In the absence of explicit payoff variations the system exhibits a phase transition from a mixed state of cooperators and defectors to a homogenous state of defectors belonging to the directed percolation universality class. By introducing nonzero random variations to the payoffs, this phase transition can be reverted in a resonance-like manner depending on the variance of noise, thus marking coherence resonance in the system. We argue that explicit random payoff variations present a viable mechanism that promotes cooperation for defection temptation values substantially exceeding the one marking the transition point to homogeneity by deterministic payoffs.

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