2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/24178We point out that the "additivity principle" and "scaling hypothesis" postulated by Bodineau and Derrida in Phys. Rev. Lett 92, 180601 (2004), follow naturally from the saddle point evaluation of a diffusive field theory.1 pageStatistical MechanicsMesoscale and Nanoscale Physicstext