Heinrichs, J and Kumar, N (1984) Non-diffusive classical transport in a medium with static randomness. In: Journal of physics C: Solid State Physics, 17 (5). pp. 769-774.
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The probability distribution for the displacement x of a particle moving in a one-dimensional continuum is derived exactly for the general case of combined static and dynamic gaussian randomness of the applied force. The dynamics of the particle is governed by the high-friction limit of Brownian motion discussed originally by Einstein and Smoluchowski. In particular, the mean square displacement of the particle varies as t2 for t to infinity . This ballistic motion induced by the disorder does not give rise to a 1/f power spectrum, contrary to recent suggestions based on the above dynamical model.
|Item Type:||Journal Article|
|Additional Information:||Copyright for this article belongs to Institute of Physics.|
|Department/Centre:||Division of Physical & Mathematical Sciences > Physics|
|Date Deposited:||13 Jan 2010 12:08|
|Last Modified:||19 Sep 2010 05:48|
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