On renormalization-group theoretic approach to Anderson localisation

Abstract

Renormalization-Group theoretic approach to disorder induced electron localization is reconsidered. It is suggested that there is a naturally occurring lower wavevector cut-off in the problem such that one should eliminate the long-wavelength degrees of freedom in favour of the shorter ones, contrary to the usual procedure. One, indeed, obtained in this way a physical fixed point in that u^∗>0.