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Phys. Rev. E 74, 036120 (2006) [5 pages]

Maximum entropy approach to power-law distributions in coupled dynamic-stochastic systems

E. V. Vakarin and J. P. Badiali
UMR 7575 LECA ENSCP-UPMC-CNRS, 11 rue P. et M. Curie, 75231 Cedex 05, Paris, France
Received 3 May 2006; published 27 September 2006

Statistical properties of coupled dynamic-stochastic systems are studied within a combination of the maximum information principle and the superstatistical approach. The conditions at which the Shannon entropy functional leads to power-law statistics are investigated. It is demonstrated that, from a quite general point of view, the power-law dependencies may appear as a consequence of "global" constraints restricting both the dynamic phase space and the stochastic fluctuations. As a result, at sufficiently long observation times the dynamic counterpart is driven into a nonequilibrium steady state whose deviation from the usual exponential statistics is given by the distance from the conventional equilibrium.

©2006 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevE.74.036120
DOI: 10.1103/PhysRevE.74.036120
PACS: 89.75.Da
  • 89.75.Da
    Systems obeying scaling laws
  • YEAR: 2006
KEYWORDS: stochastic processes, fluctuations, maximum entropy methods, statistical analysis

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