New mechanisms leading to the intermittency in Shilnikov chaos

Randomization theory of the infinite-modal maps

Masaki Nakagawa

Research output: Contribution to journalArticle

Abstract

Statistical properties of intermittent chaos generated by infinite-modal maps are investigated. Infinite-modal maps treated in this paper are related to the Shilnikov chaos, which appears in ordinary differential equations. First, we present that the infinite-modal maps generate strong intermittency with bursts like so-called "on-off intermittency". Furthermore, we develop a randomization theory of the infinite-modal maps based on the Weyl's theorem, to explain that the intermittent mechanism is generally described by a nonlinear multiplicative random process which is a generalization of the standard on-off intermittency. Second, two statistical properties are analytically derived; one is a stationary distribution, and the other is a laminar-duration distribution. Near the critical state, the stationary distribution is shown to be a log-normal distribution, and the laminar-duration distribution is analytically obtained as a function of a threshold. These theoretical results are successfully confirmed in the numerical examinations, and the previous results for the on-off intermittency are all explained systematically in these analytical formulae.

Original languageEnglish
Article number034004
JournalJournal of the Physical Society of Japan
Volume84
Issue number3
DOIs
Publication statusPublished - 2015 Mar 15

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intermittency
chaos
random processes
normal density functions
bursts
differential equations
theorems
examination
thresholds

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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New mechanisms leading to the intermittency in Shilnikov chaos : Randomization theory of the infinite-modal maps. / Nakagawa, Masaki.

In: Journal of the Physical Society of Japan, Vol. 84, No. 3, 034004, 15.03.2015.

Research output: Contribution to journalArticle

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