类似市场的理想气体:储蓄效应
Ideal-Gas Like Markets: Effect of Savings
摘要:
我们讨论了交易市场的类理想气体模型。已彻底审查了节余对分配的影响。储蓄因子固定的市场会导致类伽玛分布。在一个具有猝灭随机储蓄因子的市场中,我们证明了模型中的稳态收益($m$)分布$P(m)$具有幂律尾,且Pareto指数$ν$等于1.我们还讨论了该模型的详细数值结果。我们分析了共同货币差的分布,并建立了$P(m)$时间发展的主方程。然后在某些特殊情况下得到精确解。
英文摘要:
We discuss the ideal gas like models of a trading market. The effect of savings on the distribution have been thoroughly reviewed. The market with fixed saving factors leads to a Gamma-like distribution. In a market with quenched random saving factors for its agents we show that the steady state income ($m$) distribution $P(m)$ in the model has a power law tail with Pareto index $ν$ equal to unity. We also discuss the detailed numerical results on this model. We analyze the distribution of mutual money difference and also develop a master equation for the time development of $P(m)$. Precise solutions are then obtained in some special cases.
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