2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45300We study nonperturbative features of QCD using the dual Ginzburg-Landau theory. The color confinement is realized through the dual Higgs mechanism, which is brought by QCD-monopole condensation. We investigate the infrared screening effect on the color confinement due to the light-quark pair creation. By solving the Schwinger-Dyson equation, we find that the dynamical chiral-symmetry breaking is largely brought by the confining force.Talk presented by H. Suganuma at International Conference on 'Quark Confinement And The Hadron Spectrum' June 1994 in Como, Italy, 3 pages in LatexHigh Energy Physics - Phenomenologytext