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arXiv physics/0603141physics.soc-phcond-mat.stat-mechphysics.gen-phq-fin.GN
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类理想气体市场财富分布的一般特征

Generic features of the wealth distribution in ideal-gas-like markets

P. K. Mohanty

摘要:

本文对经济物理学中的类理想气体模型给出了一个精确解,以理解帕累托定律的微观起源。在这类模型中,具有自组织无标度稳态分布所必需的关键因素是交易或碰撞规则,其中代理人或粒子保存一定比例的财富或能量,并将其余部分用于交易。使用吉布斯系综方法,我们可以得到这个模型中的财富的确切分布。此外,我们表明,在这个模型中(a)好的储蓄者总是富有的,(b)每个代理穷人或富人投资相同的交易金额。非线性交易规则可能会改变这里观察到的一般情况。

英文摘要:

We provide an exact solution to the ideal-gas-like models studied in econophysics to understand the microscopic origin of Pareto-law. In these class of models the key ingredient necessary for having a self-organized scale-free steady-state distribution is the trading or collision rule where agents or particles save a definite fraction of their wealth or energy and invests the rest for trading. Using a Gibbs ensemble approach we could obtain the exact distribution of wealth in this model. Moreover we show that in this model (a) good savers are always rich and (b) every agent poor or rich invests the same amount for trading. Nonlinear trading rules could alter the generic scenario observed here.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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