Lab of Complex Systems Modeling and Control seminar:"Emergence of different dynamics in counter-rotating coupled oscillators "

Laboratory of Complex Systems Modeling and Control will have the next online seminar on Friday, June 16, 13:00.

Zoom link

Title: Emergence of different dynamics in counter-rotating coupled oscillators 

Speaker: 

Dr. Vaibhav Varshney, Assistant Professor (Research) SRM Institute of Science and Technology, Delhi-NCR Campus

In this talk, we focus on the study of the novel dynamics emerging from coupled conter-rotating oscillators.
First, we will discuss a new scheme which does not disturb any internal parameter of the system and forces the coupled systems to either oscillation death or oscillating state simply by changing the sense of rotation of the augmented system. Next, we will discuss the novel bifurcation delays and chimera-like states in a network of driven FitHugh-Nagumo (FHN) oscillators, where each oscillator can rotate either clockwise or anticlockwise. Slow variation of the time-dependent parameter of FHN oscillator near the bifurcation point leads to a delay in the bifurcation. When the FHN oscillators are coupled via dissimilar variables, then bifurcation delay in the anticlockwise rotating oscillator changes, creating chimera-like structures and also travelling waves at certain coupling strengths.
Finally, we will discuss the emergence of extreme events and their propagation in a network of coupled nonlinear oscillators, where counter-rotating oscillators play the role of malfunctioning agents. We observe that the extreme events occur only in the counter oscillating pair of oscillators through the saddle-node bifurcation. We present a detailed study of the propagation and destruction of the extreme events and show how these events depend on the strength of the coupling.