2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/23116We analyze the energetics of domains and interfaces in the presence of quenched random fields, particularly at the lower critical dimension of the random field Ising model. The relevance of this study to experiments is also discussed.Lectures given at the SERC School on Physics of Disordered Solids, IMSc, Chennai, India, (April, 2003)Statistical MechanicsDisordered Systems and Neural Networkstext