A method of calculating the resistivity of disordered systems by a force- force correlation function is criticized as being inexact. This correlation function is the zero-frequency limit of a certain response function directly related to the conductivity, and should vanish in the zero-frequency limit. However at least in the case of a dilute system of scatterers, an approximate treatment gives the conventional result for the resistivity. An attempt is made to analyse why this should be so.
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W.G. Chambers (1973) studied this question.
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