2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42937We introduce the high density effective theory of QCD. We discuss, in particular, the problem of developing a consistent power counting scheme.8 pages, Contribution to the International Workshop on QCD: QCD@Work 2003 - Conversano (Italy) 14-18 June 2003 (eConf C030614)High Energy Physics - Phenomenologytext