4.7 Article

Chaos and Levy flights in the three-body problem

期刊

出版社

OXFORD UNIV PRESS
DOI: 10.1093/mnras/staa1722

关键词

chaos; celestial mechanics; planets and satellites: dynamical evolution and stability

资金

  1. FONDECYT IniciacionGrant [11180005]
  2. JeffMetcalf Internship Program
  3. JSPS KAKENHI [17H06360, 17F17764]
  4. Grants-in-Aid for Scientific Research [17F17764] Funding Source: KAKEN

向作者/读者索取更多资源

We study chaos and Levy flights in the general gravitational three-body problem. We introduce new metrics to characterize the time evolution and final lifetime distributions, namely Scramble Density S and the Levy flight (LF) index L, that are derived from the Agekyan-Anosova maps and homology radius R-H. Based on these metrics, we develop detailed procedures to isolate the ergodic interactions and Levy flight interactions. This enables us to study the three-body lifetime distribution in more detail by decomposing it into the individual distributions from the different kinds of interactions. We observe that ergodic interactions follow an exponential decay distribution similar to that of radioactive decay. Meanwhile, Levy flight interactions follow a power-law distribution. Levy flights in fact dominate the tail of the general three-body lifetime distribution, providing conclusive evidence for the speculated connection between power-law tails and Levy flight interactions. We propose a new physically motivated model for the lifetime distribution of three-body systems and discuss how it can be used to extract information about the underlying ergodic and Levy flight interactions. We discuss ejection probabilities in three-body systems in the ergodic limit and compare it to previous ergodic formalisms. We introduce a novel mechanism for a three-body relaxation process and discuss its relevance in general three-body systems.

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