Crossover in the power spectrum of a driven diffusive lattice-gas model

Jørgen Vitting Andersen, Henrik Jeldtoft Jensen, Ole G. Mouritsen

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    A driven diffusive lattice-gas model with stochastic dynamics is used to study, via a Monte Carlo simulation, the fluctuations in the particle density and the lifetime of the particles in the system. The scaling properties of the power spectrum S(f) and the lifetime distribution function D(t) exhibit a crossover from (1/f3)- to (1/f2)-noise behavior, with β≃1.5, when the drive is sufficiently strong to induce a characteristic time scale. We argue that the scaling behavior with β≃1.5 is governed by the stochastic nature of the dynamics whereas deterministic dynamics leads to β≃1.
    Original languageEnglish
    JournalPhysical Review B
    Issue number1
    Pages (from-to)439-442
    Publication statusPublished - 1991

    Bibliographical note

    Copyright (1991) by the American Physical Society.

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