Non-linear dynamics and emergent statistical regularity in classical Lennard–Jones three-body system upon disturbance

Zhenwei Yao ()
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Zhenwei Yao: Shanghai Jiao Tong University

The European Physical Journal B: Condensed Matter and Complex Systems, 2023, vol. 96, issue 12, 1-7

Abstract: 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.

Date: 2023
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DOI: 10.1140/epjb/s10051-023-00626-8

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