We consider a star network consisting of N oscillators coupled to a central one which in turn is coupled to an infinite set of oscillators (reservoir), which makes it leaking. Two of the N + 1 normal modes are dissipating, while the remaining N - 1 lie in a frequency range which is more and more squeezed as the coupling strengths increase, which realizes synchronization of the single parts of the system.
@article{arxiv.1710.11025,
title = {Star network synchronization led by strong coupling-induced frequency squeezing},
author = {Benedetto Militello and Dariusz Chruściński and Anna Napoli},
journal= {arXiv preprint arXiv:1710.11025},
year = {2018}
}