2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/20341A Hamiltonian renormalization group is presented. Such a formulation is relevant for chiralic systems and more appropriate than the Lagrangian formalism. An application to 1D system is presented.6 pages, submitted to the Encyclopedia of Nonlinear SciencesStrongly Correlated Electronstext