Infinite invariant density determines statistics of time averages for weak chaos.
Infinite invariant density determines statistics of time averages for weak chaos.
复制标题
无限不变密度决定了弱混沌的时间平均值的统计量。
DOI:
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发表时间:
2011
影响因子:
8.6
通讯作者:
E. Barkai
中科院分区:
文献类型:
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作者:
N. Korabel;E. Barkai
Weakly chaotic nonlinear maps with marginal fixed points have an infinite invariant measure. Time averages of integrable and nonintegrable observables remain random even in the long time limit. Temporal averages of integrable observables are described by the Aaronson-Darling-Kac theorem. We find the distribution of time averages of nonintegrable observables, for example, the time average position of the particle, x[over ¯]. We show how this distribution is related to the infinite invariant density. We establish four identities between amplitude ratios controlling the statistics of the problem.