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- W1982201802 abstract "The empirical established non-Gaussian behavior of asset price fluctuations is studied using an analytical approach. The analysis is based on a nonlinear Fokker-Planck equation with a self-organized feedback-coupling term, devised as a fundamental model for price dynamics. The evidence, and the analytical form of the memory term, are discussed in the context of statistical physics. It will be suggested that the memory term in leading order offers a power law dependence with an exponent straight theta. The stationary solution of the probability density leads asymptotically to a truncated Lévy distribution, the characteristic exponent beta of which is related to the exponent straight theta by beta=3/theta-1. The empirical data can be reproduced by theta approximately 5/4." @default.
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- W1982201802 date "2001-07-17" @default.
- W1982201802 modified "2023-09-23" @default.
- W1982201802 title "Variations of the asset prices" @default.
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- W1982201802 doi "https://doi.org/10.1103/physreve.64.026104" @default.
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