2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/27332The long-time relaxation of the average conductance in a 2D mesoscopic sample is studied within the method recently suggested by Muzykantskii and Khmelnitskii and based on a saddle-point approximation to the supermatrix $σ$--model. The obtained far asymptotics is in perfect agreement with the result of renormalization group treatment by Altshuler, Kravtsov and Lerner.REVTEX, 4 pagesCondensed Mattertext