期刊
PHYSICAL REVIEW E
卷 85, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.85.011149
关键词
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资金
- Center for Asia Studies of Nankai University [2010-5]
- National Natural Science Foundation of China [10672081]
- CNPq [PROSUL-490440/2007]
- CAPES
- PRONEX/Fapergs
We study the evolution of cooperation in evolutionary spatial games when the payoff correlates with the increasing age of players (the level of correlation is set through a single parameter, alpha). The demographic heterogeneous age distribution, directly affecting the outcome of the game, is thus shown to be responsible for enhancing the cooperative behavior in the population. In particular, moderate values of alpha allow cooperators not only to survive but to outcompete defectors, even when the temptation to defect is large and the ageless, standard alpha = 0 model does not sustain cooperation. The interplay between age structure and noise is also considered, and we obtain the conditions for optimal levels of cooperation.
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