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PHYSICAL REVIEW E 85, 011149 (2012) Cooperation and age structure in spatial games
 

Summary: PHYSICAL REVIEW E 85, 011149 (2012)
Cooperation and age structure in spatial games
Zhen Wang
School of Physics, Nankai University, Tianjin 300071, China and
Department of Physics, HongKong Baptist University, Kowloon Tong, HongKong
Zhen Wang*
School of Innovation Experiment and School of Software Technology, Dalian University of Technology, Dalian 116024, China
Xiaodan Zhu
School of Innovation Experiment, Dalian University of Technology, Dalian 116024, China
Jeferson J. Arenzon
Instituto de F´isica and INCT-Sistemas Complexos, Universidade Federal do Rio Grande do Sul, CP 15051, 91501-970 Porto Alegre RS, Brazil
(Received 24 June 2011; revised manuscript received 4 October 2011; published 31 January 2012)
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, ). 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 allow cooperators not
only to survive but to outcompete defectors, even when the temptation to defect is large and the ageless, standard
= 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.
DOI: 10.1103/PhysRevE.85.011149 PACS number(s): 02.50.Le, 87.23.-n, 89.65.-s

  

Source: Arenzon, Jeferson J. - Instituto de Física, Universidade Federal do Rio Grande do Sul

 

Collections: Physics