2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/29881It is argued that logarithmic factors multiplying power law behavior are to be expected at or near non-mean field critical points of systems with short-range interactions described theoretically by any kind of n -> 0 limit, in which the effective free energy vanishes. Explicit examples are given for quenched random ferromagnets, polymer statistics and percolation, but the phenomenon is quite general.4 pagesStatistical Mechanicstext