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Updated: Sep 19, 2025

Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques
Published on: March 12, 2019
Mutual information for a particle pair and its application to diagnose chaos in curved spacetime
Wenfu Cao1, Yang Huang1, Hongsheng Zhang1
1University of Jinan, School of Physics and Technology, 336 West Road of Nan Xinzhuang, Jinan, Shandong 250022, China.
Abstract:
We propose the concept of mutual information for particle pair (MIPP) in curved spacetime, and show that MIPP has potential to be a proper chaos indicator. We tested this method in the Schwarzschild and Kerr spacetime and compared it with the fast Lyapunov indicator. The results show that the MIPP effectively identify orbital states and demonstrate prominent performance in recognizing transitions between orbital states. Our result show that information theory is helpful to deepen our understanding of dynamics of few-body system significantly.
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