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Cited by 287

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A spectral entropy method for distinguishing regular and irregular motion of Hamiltonian systems

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Powell, G E, Percival, I C·1979·Journal of Physics A: Mathematical and General

Abstract

Regular and irregular motions of bounded conservative Hamiltonian systems of N degrees of freedom can be distinguished by the structure of the frequency spectrum of a single trajectory. The spectral entropy S is introduced which provides a measure of the distribution of the frequency components. Numerical calculations on the model Henon and Heiles system and a realistic molecular model are performed. Power spectra are obtained from numerical solutions to Hamilton's equations using fast Fourier transforms and the Hanning method. For regular trajectories S is found to stabilise after a finite time of integration, while for irregular cases S increases erratically. Estimates of the relative volume of regular regions of phase space as a function of energy are given for the two systems.

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Metadata

Authors
Powell, G. E., & Percival, I. C.
Venue
Journal of Physics A: Mathematical and General
Published
1979-11
Volume
12
Issue
11
Pages
2053-2071
ISSN
  • 0305-4470 (ISSN-L)
  • 1361-6447
OpenAlex
W2063173250
Cited by
287
References
3
FWCI
6.47
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: A spectral entropy method for distinguishing regular and irregular motion of Hamiltonian systems. https://app.cochat.ai/papers/10.1088/0305-4470/12/11/017
The paper
Powell, G. E., & Percival, I. C. (1979). A spectral entropy method for distinguishing regular and irregular motion of Hamiltonian systems. Journal of Physics A: Mathematical and General. https://doi.org/10.1088/0305-4470/12/11/017

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.