Evolutionary snowdrift game on heterogeneous Newman-Watts small-world network  

作　　者：杨涵新 高坤 韩筱璞 汪秉宏 

机构地区：[1]Department of Modern Physics and Nonlinear Science Center, University of Science and Technology of China

出　　处：《Chinese Physics B》2008年第8期2759-2763,共5页中国物理B（英文版）

基　　金：supported by the National Basic Research Program of China (No 2006CB705500);the National Natural Science Foundation of China (Grant Nos 60744003, 10635040, 10532060 and 10472116);the Specialized Research Fund for the Doctoral Program of Higher Education of China

摘　　要：We study the evolutionary snowdrift game in a heterogeneous Newman-Watts small-world network. The heterogeneity of the network is controlled by the number of hubs. It is found that the moderate heterogeneity of the network can promote the cooperation best. Besides, we study how the hubs affect the evolution of cooperative behaviours of the heterogeneous Newman-Watts small-world network. Simulation results show that both the initial states of hubs and the connections between hubs can play an important role. Our work gives a further insight into the effect of hubs on the heterogeneous networks.We study the evolutionary snowdrift game in a heterogeneous Newman-Watts small-world network. The heterogeneity of the network is controlled by the number of hubs. It is found that the moderate heterogeneity of the network can promote the cooperation best. Besides, we study how the hubs affect the evolution of cooperative behaviours of the heterogeneous Newman-Watts small-world network. Simulation results show that both the initial states of hubs and the connections between hubs can play an important role. Our work gives a further insight into the effect of hubs on the heterogeneous networks.

关 键 词：complex networks snowdrift game COOPERATION heterogeneous Newman-Watts small-world network 

分 类 号：O157.5[理学—数学]