Enhancement of cooperation in the spatial prisoner's dilemma with a coherence-resonance effect through annealed randomness at a cooperator–defector boundary; comparison of two variant models

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Abstract

Inspired by the commonly observed real-world fact that people tend to behave in a somewhat random manner after facing interim equilibrium to break a stalemate situation whilst seeking a higher output, we established two models of the spatial prisoner's dilemma. One presumes that an agent commits action errors, while the other assumes that an agent refers to a payoff matrix with an added random noise instead of an original payoff matrix. A numerical simulation revealed that mechanisms based on the annealing of randomness due to either the action error or the payoff noise could significantly enhance the cooperation fraction. In this study, we explain the detailed enhancement mechanism behind the two models by referring to the concepts that we previously presented with respect to evolutionary dynamic processes under the names of enduring and expanding periods.

Original languageEnglish
Pages (from-to)714-724
Number of pages11
JournalPhysica A: Statistical Mechanics and its Applications
Volume462
DOIs
Publication statusPublished - Nov 15 2016

All Science Journal Classification (ASJC) codes

  • Statistics and Probability
  • Condensed Matter Physics

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