We show that nonlinear resonances in a classically mixed phase space allow to define generic, strongly entangled multi-partite quantum states. The robustness of their multipartite entanglement increases with the particle number, i.e. in the semiclassical limit, for those classes of diffusive noise which assist the quantum-classical transition.
@article{arxiv.quant-ph/0702217,
title = {Entanglement-screening by nonlinear resonances},
author = {Ignacio Garcia-Mata and Andre R. R. Carvalho and Florian Mintert and Andreas Buchleitner},
journal= {arXiv preprint arXiv:quant-ph/0702217},
year = {2009}
}