2017/03/11 by L. Q. English, A. V. Zampetaki, English, L. Q. +9
Computer Science · Neuroscience · Physics and Astronomy · #FOS: Physical sciences #Neural dynamics and brain function #Nonlinear Dynamics and Pattern Formation #Pattern Formation and Solitons (nlin.PS) #Theoretical and Computational Physics
paper · pdf · doi:10.48550/arxiv.1703.04015
openalex publication_date 2017/03/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Chimera states are characterized by the symmetry-breaking coexistence of synchronized and incoherent groups of oscillators in certain chains of identical oscillators. We report on the direct experimental observation of states reminiscent of such chimeras within a ring of coupled electronic (Wien-bridge) oscillators, and compare these to numerical simulations of a theoretically derived model. Following up on earlier work characterizing the pairwise interaction of Wien-bridge oscillators by Kuramoto-Sakaguchi phase dynamics, we develop a lattice model for a chain thereof, featuring an \it exponentially decaying spatial kernel. We find that for certain values of the Sakaguchi parameter α, chimera-like states involving the coexistence of two clearly-separated regions of distinct dynamical behavior can establish themselves in the ring lattice, characterized by both traveling and stationary coexistence domains of synchronization.