HAL : jpa-00246938, version 1

DOI : 10.1051/jp1:1994167

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Journal de Physique I 4, 5 (1994) 635-653

On the flux distribution in a one dimensional disordered system

Cécile Monthus1, Alain Comtet

(1994)

We study some transport properties of a one dimensional disordered system of finite length N. In this system particles are subject to random forces resulting both from a thermal noise and from a quenched random force F(x) which models the inhomogeneous medium. The latter is distributed as a white noise with a non zero average bias. Imposing some fixed concentration of particles at the end points of the chain yields a steady current J(N) which depends on the environnent {F(x)}. The problem of computing the probabilility distribution P(J) over the environments is addressed. Our approchh is based on a path integral method and on a moment calculation. In the case of a non zero bias our results generalize those obtained recently by Oshanin et al.

1 :	IPNO - Institut de Physique Nucléaire d'Orsay

Domaine

:

Physique/Articles anciens Physique/Matière Condensée/Systèmes désordonnés et réseaux de neurones

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Soumis le : Samedi 1 Janvier 1994, 08:00:00

Dernière modification le : Mardi 4 Mars 2008, 14:10:05