English, Article edition: EVOLUTION OF COOPERATION IN A SPATIAL PRISONER'S DILEMMA FRANK SCHWEITZER; LAXMIDHAR BEHERA; HEINZ MÃHLENBEIN

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Bookmark: http://trove.nla.gov.au/version/134158
Physical Description
  • article
Language
  • English

Edition details

Title
  • EVOLUTION OF COOPERATION IN A SPATIAL PRISONER'S DILEMMA
Author
  • FRANK SCHWEITZER
  • LAXMIDHAR BEHERA
  • HEINZ MÃHLENBEIN
Physical Description
  • article
Notes
  • We investigate the spatial distribution and the global frequency of agents who can either cooperate or defect. The agent interaction is described by a deterministic, non-iterated prisoner's dilemma game, further each agent only locally interacts with his neighbors. Based on a detailed analysis of the local payoff structures we derive critical conditions for the invasion or the spatial coexistence of cooperators and defectors. These results are concluded in a phase diagram that allows us to identify five regimes, each characterized by a distinct spatiotemporal dynamics and a corresponding final spatial structure. In addition to the complete invasion of defectors, we find coexistence regimes with either a majority of cooperators in large spatial domains, or a minority of cooperators organized in small non-stationary domains or in small clusters. The analysis further allowed a verification of computer simulation results by Nowak and May (1993). Eventually, we present simulation results of a true 5-person game on a lattice. This modification leads to non-uniform spatial interactions that may even enhance the effect of cooperation.
  • Prisoner's dilemma, cooperation, spatial 5-person game
  • RePEc:wsi:acsxxx:v:05:y:2002:i:02:p:269-299
Language
  • English
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