Critical exponents and universality in pinned charge density waves

M. Celino and F. Corberi

Physica A: Statistical Mechanics and its Applications, 1992, vol. 184, issue 3, 451-457

Abstract: 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 distribution of avalanches. Critical exponents and current power spectrum are evaluated analytically in any dimension by means of a simple coarse grained model. Extensive simulations are performed in one-dimensional systems below and above threshold, to critically verify the question of universality of coarse grained models with respect to the original Hamiltonian.

Date: 1992
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:184:y:1992:i:3:p:451-457

DOI: 10.1016/0378-4371(92)90316-I

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