Fokker-Planck Description of Wealth Dynamics and the Origin of Pareto's Law

Bruce M. Boghosian

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Abstract: The so-called "Yard-Sale Model" of wealth distribution posits that wealth is transferred between economic agents as a result of transactions whose size is proportional to the wealth of the less wealthy agent. In recent work [B.M. Boghosian, "Kinetics of Wealth and the Pareto Law," {\it Phys. Rev. E} {\bf 89} (2014) 042804], it was shown that this results in a Fokker-Planck equation governing the distribution of wealth. With the addition of a mechanism for wealth redistribution, it was further shown that this model results in stationary wealth distributions that are very similar in form to Pareto's well known law. In this paper, a much simpler derivation of that Fokker-Planck equation is presented.

Date: 2014-07
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Published in International Journal of Modern Physics C, Vol. 25, No. 11 (2014) 1441008

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