On the ac conductivity of slightly disordered one-dimensional conductors
Gor'kov L. P., Dorokhov O. N., Prigara F. V.
The Austin-Mott formula for the frequency dependence of the conductivity is derived for the case of one-dimensional conductors containing disorder. It is shown under what circumstances the "pair approximation" is valid in these systems. The conditions, for which the two states making up a pair are statistically independent, are considered.