2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/101892The Kugo-Ojima confinement criterion is verified in the unquenched Landau gauge QCD simulation. The valence quark propagator of the Kogut-Susskind fermion with use of the fermion action including the Naik term and the staple contribution is calculated on MILC Asqtad unquenched gauge configurations, and it shows infrared suppression of the quark propagator.LaTeX[PoS] 6 pages, Lattice2005 proceedings(Topology and Confinement) Results on the Z_2 correctedHigh Energy Physics - Latticetext