Zi-Xi Xu

N-Body Simulation and Machine Learning-Based Stability Prediction for Multi-Planet Exoplanetary Systems

We present a reproducible pipeline that combines a fast batched symplectic N-body integrator, a renormalized two-particle MEGNO chaos indicator, and supervised machine learning to predict the 10^4-orbit stability of compact multi-planet systems from only the first 10^2-10^3 orbits. Using 3200 coplanar three-planet syst...