Travelling wavefronts for the Belousov–Zhabotinsky system with non-local delayed interaction

Abstract

This article offers an advanced and novel investigation into the intricate propagation dynamics of the Belousov–Zhabotinsky system with non-local delayed interaction, which exhibits dynamical transition structure from bistable to monostable. We first solved the enduring open problem concerning the existence, uniqueness and the speed sign of the bistable travelling waves. In the monostable case, we developed and derived new results for the minimal wave speed selection, which, as an application, further improved the existing investigations on pushed and pulled wavefronts. Our results can provide new estimate to the minimal speed as well as to the determinacy of the transition parameters. Moreover, these results can be directly applied to standard localised models and delayed reaction diffusion models by choosing appropriate kernel functions.

Keywords

• Belousov–Zhabotinsky system
• non-local PDE
• non-isolated equilibria
• bistable travelling wave
• speed selection
• 35K57
• 35C07
• 35B40
• 92D25