2025/04/08 by Vincent Thibeault, Benjamin Claveau, Thibeault, Vincent +5 · 1 voice · 1 citation
Computer Science · Physics and Astronomy · #Adaptation and Self-Organizing Systems (nlin.AO) #Exactly Solvable and Integrable Systems (nlin.SI) #FOS: Physical sciences #Mathematical Physics (math-ph) #Neural Networks and Reservoir Computing #Nonlinear Dynamics and Pattern Formation #Quantum many-body systems #math-ph #nlin.AO #nlin.SI
paper · pdf · doi:10.48550/arxiv.2504.06248
openalex publication_date 2025/04/08 · arxiv published 2025/04/08 · openalex created_date 2025/10/10 · arxiv updated 2026/07/08 · openalex updated_date 2026/07/28
Conserved quantities in phase-oscillator dynamics are well established for identically coupled oscillators, or groups thereof, but the explicit connectivity conditions under which more complex networks admit constants of motion remain difficult to identify. Using Koopman theory, we derive general conditions for the existence of distinct conserved quantities in the Kuramoto model with heterogeneous phase lags on any weighted, directed, and signed graph. To this end, we find Koopman eigenfunctions and continuous Lie symmetries that generate different families of constants of motion. The derived conditions reveal a broad class of network motifs that support conserved quantities and we detect these motifs in hundreds of complex empirical networks. The results thus point to connectivity patterns that can preserve phase relationships over time and motivate further investigations of Koopman spectral properties for dynamics on complex networks.