2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/201235I review the Sign Problem hindering lattice QCD simulations of dense baryonic matter, focussing where possible on its physical relevance. The possibility of avoiding the Sign Problem via a duality transformation is also briefly considered. Finally, I review evidence for deconfinement at non-zero quark density in recent simulations of Two Color QCD.Talk at "New Frontiers in QCD", Yukawa International Seminar 2006 (Kyoto), 8 pages, 7 figuresHigh Energy Physics - Latticetext