Chimera patterns induced by distance-dependent power-law coupling in ecological networks

TL;DR

This study investigates how distance-dependent power-law coupling influences chimera patterns and transitions in ecological oscillator networks, revealing the role of coupling topology in collective dynamics.

Contribution

It introduces the effect of a tunable power-law exponent on chimera patterns in ecological networks, bridging physics and biology.

Findings

Power-law exponent controls transition between synchrony and chimera states.

Mapping of spatiotemporal states based on coupling parameters.

Identification of transitions mediated by coupling strength and topology.

Abstract

This paper reports the occurrence of several chimera patterns and the associated transitions among them in a network of coupled oscillators, which are connected by a long range interaction that obeys a distance-dependent power law. This type of interaction is common in physics and biology and constitutes a general form of coupling scheme, where by tuning the power-law exponent of the long range interaction the coupling topology can be varied from local via nonlocal to global coupling. To explore the effect of the power-law coupling on collective dynamics, we consider a network consisting of a realistic ecological model of oscillating populations, namely the Rosenzweig--MacArthur model, and show that the variation of the power-law exponent mediates transitions between spatial synchrony and various chimera patterns. We map the possible spatiotemporal states and their scenarios that arise due to the interplay between the coupling strength and the power-law exponent.