Kinetic modeling of the steam reforming of ethanol for hydrogen production
Assessing higher-order effects of nonlinearities in a 2-DOF airfoil coupled a nonl...
Statistical properties of instantaneous frequencies in the Kuramoto model
| Full text | |
| Author(s): |
Total Authors: 2
|
| Affiliation: | [1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Unicamp Campinas, SP - Brazil
Total Affiliations: 1
|
| Document type: | Journal article |
| Source: | CHAOS SOLITONS & FRACTALS; v. 149, AUG 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
The dynamics of large systems of coupled oscillators is a subject of increasing importance with prominent applications in several areas such as physics and biology. The Kuramoto model, where a set of oscillators move around a circle representing their phases, is a paradigm in this field, exhibiting a continuous transition between disordered and synchronous motion. Reinterpreting the oscillators as rotating unit vectors, the model was extended to higher dimensions by allowing vectors to move on the surface of D-dimensional spheres, with D = 2 corresponding to the original model. It was shown that the transition to synchronous dynamics was discontinuous for odd D. Inspired by results in 2D, Ott et al proposed an ansatz for the density function describing the oscillators and derived equations for the ansatz parameters, effectively reducing the dynamics complexity. Here we take a different approach for the 3D system and construct an ansatz based on spherical harmonics decomposition of the distribution function. Our result differs from Ott's work and leads to similar but simpler equations determining the dynamics of the order parameter. We derive the phase diagram of equilibrium solutions for several distributions of natural frequencies and find excellent agreement with numerical solutions for the full system dynamics. We believe our approach can be generalized to higher dimensions, leading to complexity reduction in other systems of coupled equations. (c) 2021 Elsevier Ltd. All rights reserved. (AU) | |
| FAPESP's process: | 19/24068-0 - Generalized Kuramoto oscillators with external forces |
| Grantee: | Ana Elisa Dellamatrice Barioni |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 16/01343-7 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics |
| Grantee: | Nathan Jacob Berkovits |
| Support Opportunities: | Special Projects |
| FAPESP's process: | 19/20271-5 - Evolutionary models in population dynamics |
| Grantee: | Marcus Aloizio Martinez de Aguiar |
| Support Opportunities: | Regular Research Grants |