Phys. Rev. B 25, 2905–2907 (1982)Diffusion in a disordered mediumReceived 21 September 1981; published in the issue dated 15 February 1982 We have investigated the diffusion coefficient of a particle performing a random walk on a lattice with random jump rates. The mean-square displacement of the particle is a linear function of time for all times when the initial probability distribution corresponds to a stationary distribution. We discuss the implication of this result on the description of diffusion in disordered media by averaged equations. © 1982 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.25.2905
DOI:
10.1103/PhysRevB.25.2905
PACS:
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