Abstract
Understanding the deep connection of microscopic dynamics and statistical regularity yields insights into the foundation of statistical mechanics. In this work, based on the classical three-body system under the Lennard–Jones potential upon disturbance, we illustrated the elusive non-linear dynamics in terms of the neat frequency-mixing processes, and revealed the emergent statistical regularity in speed distribution along a single particle trajectory. This work demonstrates the promising possibility of classical few-body models for exploring the fundamental questions on the interface of microscopic dynamics and statistical physics.
Graphical abstract
The non-linear dynamics of the perturbed three-body system is analyzed in terms of the neat frequency-mixing processes, and the statistical regularity in the speed distribution along a single particle trajectory is revealed.
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The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grants No. BC4190050).
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Yao, Z. Non-linear dynamics and emergent statistical regularity in classical Lennard–Jones three-body system upon disturbance. Eur. Phys. J. B 96, 159 (2023). https://doi.org/10.1140/epjb/s10051-023-00626-8
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DOI: https://doi.org/10.1140/epjb/s10051-023-00626-8