2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/50591We argue that the BRST and the anti-BRST super symmetries in the four-dimensional Yang-Mills theory can be spontaneously broken in a nonlinear partial gauge due to ghost-anti-ghost condensation. However, we show that the spontaneous BRST symmetry breaking can be avoided if we adopt the modified Maximal Abelian gauge which is an orthosymplectic $OSp(4|2)$ invariant renormalizable gauge proposed by the author to derive quark confinement. We compare the Maximal Abelian gauge with the conventional $OSp(4|2)$ invariant gauge proposed by Delbourgo-Jarvis and Baulieu-Thierry-Mieg. Finally, an implication to the Gribov problem is briefly mentioned.15 pages, no figuresHigh Energy Physics - TheorySpontaneous breakdown of BRST supersymmetry due to ghost condensation in QCDtext