The mean-field approximation model of company's income growth

Takayuki Mizuno, Misako Takayasu and Hideki Takayasu

Physica A: Statistical Mechanics and its Applications, 2004, vol. 332, issue C, 403-411

Abstract: We introduce a mean-field-type approximation for description of company's income statistics. Utilizing huge company data we show that a discrete version of Langevin equation with additive and multiplicative noises can appropriately describe the time evolution of a company's income fluctuation in statistical sense. The Zipf's law of income distribution is shown to be held in a steady-sate widely, and country dependence of income distribution can also be nicely implemented in our numerical simulation.

Keywords: Econophysics; Company's income; Zipf's law (search for similar items in EconPapers)
Date: 2004
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Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:332:y:2004:i:c:p:403-411

DOI: 10.1016/j.physa.2003.10.006

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