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Proportionate vs disproportionate distribution of wealth of two individuals in a tempered Paretian ensemble

Listed author(s):
  • G. Oshanin
  • Yu. Holovatch
  • G. Schehr
Registered author(s):

    We study the distribution P(\omega) of the random variable \omega = x_1/(x_1 + x_2), where x_1 and x_2 are the wealths of two individuals selected at random from the same tempered Paretian ensemble characterized by the distribution \Psi(x) \sim \phi(x)/x^{1 + \alpha}, where \alpha > 0 is the Pareto index and $\phi(x)$ is the cut-off function. We consider two forms of \phi(x): a bounded function \phi(x) = 1 for L \leq x \leq H, and zero otherwise, and a smooth exponential function \phi(x) = \exp(-L/x - x/H). In both cases \Psi(x) has moments of arbitrary order. We show that, for \alpha > 1, P(\omega) always has a unimodal form and is peaked at \omega = 1/2, so that most probably x_1 \approx x_2. For 0

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    Paper provided by in its series Papers with number 1106.4710.

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    Date of creation: Jun 2011
    Publication status: Published in Physica A 390, 4340--4346 (2011)
    Handle: RePEc:arx:papers:1106.4710
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