Critical disordered systems in a geometrical concept

الملخص EN

-There exist systems which are construct from a stochastic process and in that present structures with invariance scaling properties.

This scaling behavior can either engender selfsimilar or self affine structures.

The percolation is a relatively simple model that explain the behavior of systems properties in the neighbourhood of singularity that induced phase transition.

On percolation networks there are no correlation between physical elements of systems, with respect to their state, however geometrical structure appears with scaling properties, which invoke a fractal The incipient infinite cluster proceed from fluctuations in cluster size distribution and their contribution in the constructing of this cluster, when p tends towards pc.

On the other hand the transport properties distribution on the incipient infinite cluster is conditionned by the correlations between cluster elements from which the ad\>ent of the multifractal spectrum for the description of the moments of the current distribution.

Here we examine this aspect in the analyzis of the correlation length