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论文类型：期刊论文

发表时间：2008-02-15

发表刊物：PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS

收录刊物：SCIE、EI

卷号：387

期号：5-6

页面范围：1311-1318

ISSN号：0378-4371

关键字：Monte Carlo; wealth distribution; strategy; payoff matrix

摘要：This paper discusses the wealth distribution in a finite-sized closed economic system, where each agent may choose one amongst the four strategies: hawk, defect, cooperate and dove. When two agents encounter, exchange of the wealth is decided by the rules defined. The simulation results show that the equilibrium probability distribution of wealth will be single-peak, double-peak and non-peak distributions for different parameters. Under each condition, we analyze the wealth distribution of agents with every strategy. The results show that there are both the poor and the rich amongst the agents with hawk and defect strategies, which is randomly formed, and the wealth distribution of agents with cooperate strategy is more reasonable, while most of the agents with dove strategy become poor. Finally, the effect of the saving factor in the model is also discussed, and it is shown that lower saving of the agents is easier to result in wealth polarization, on the contrary, higher saving will ensure single-peak more easily. (c) 2007 Elsevier B.V. All rights reserved.