We study analytically and numerically the depinning transition of a pinned charge density wave. We introduce a real space renormalization group approach with the method of decimation, which allows to determine the threshold both in the strong and weak pinning limit. We also perform a numerical...

We study analytically and numerically the behaviour of charge density waves above the depinning transition. The system behaves as a complex self-organized object which reacts to the external stimulations by adapting itself in a marginally stable state, which gives rise to a power law...