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Modeling synchronization in globally coupled oscillatory systems using model order reduction.
Niccolò Discacciati1, Jan S Hesthaven1
1Institute of Mathematics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
Chaos (Woodbury, N.Y.)
|July 9, 2021
Summary
Researchers developed reduced order models for synchronization in oscillatory systems like the Kuramoto model and circadian clocks. These models offer significant computational speedup for large-scale systems.
Area of Science:
- Complex systems
- Nonlinear dynamics
- Computational physics
Background:
- Globally coupled multi-component oscillatory systems are fundamental in various scientific domains.
- Synchronization phenomena in these systems are crucial for understanding collective behaviors.
- Existing models can be computationally intensive for large-scale simulations.
Purpose of the Study:
- To develop and validate reduced order models (ROMs) for globally coupled multi-component oscillatory systems.
- To investigate the synchronization properties of the Kuramoto model and a circadian clock model using ROMs.
- To assess the computational efficiency and accuracy of the proposed surrogate models.
Main Methods:
- Construction of low-dimensional reduced order models for prototype oscillatory systems.
- Analysis of synchronization transitions by varying coupling strengths in the reduced models.
- Validation of reduced models against full system dynamics for accuracy and efficiency.
Main Results:
- Reduced order models accurately approximate solutions and key quantities of interest.
- The surrogate models successfully capture the transition to synchronized states.
- Significant computational speedup is achieved for large systems when interactions depend on system variable averages.
Conclusions:
- Reduced order modeling is an effective approach for studying synchronization in complex oscillatory systems.
- The developed ROMs provide a computationally efficient alternative for large-scale simulations.
- This methodology is applicable to diverse systems exhibiting collective dynamics and synchronization.


