Explosive synchronization in phase-frustrated multiplex networks

TL;DR

This paper studies explosive synchronization in multiplex networks with phase frustration, showing how interlayer coupling induces abrupt transitions even when individual layers do not synchronize explosively.

Contribution

It demonstrates that multiplexing can induce explosive synchronization across all layers, even if some layers do not exhibit ES alone, and provides analytical derivations of transition points.

Findings

Explosive synchronization can occur in all layers due to multiplexing.

Interlayer coupling can induce ES even when a layer alone does not exhibit it.

Analytical transition points closely match numerical simulations.

Abstract

We investigate the phenomenon of first order transition (explosive synchronization (ES)) in adaptively coupled phase-frustrated bi-layer multiplex network. We consider Sakaguchi-Kuramoto (SK) dynamics over the top of multiplex networks and we establish that ES can emerge in all layers of a multiplex network even when one of the layers may not exhibit ES in the absence of the inter layer connections. We clearly identify the regions of the parameter space, in which the multiplexity wins over frustration parameter and network structure for the emergence of ES. Based on the mean field analysis around the coherent state and a perturbative approach around the incoherent state we analytically derive the synchronization transition points (backward and forward) of all layers of multiplex network as well as its mono-layer counterpart satisfying a close agreement with the numerical results.