2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/54160Chiral symmetry breaking due to instanton-produced fermion zero modes in the confining vacuum is considered. Zero modes provide 'tHooft-type determinant quark interaction, which is bosonized by introduction of auxiliary fields. For three flavours this procedure becomes nontrivial and a method is suggested which allows to derive effective Lagrangian for massless Nambu--Goldstone modes.10 pagesHigh Energy Physics - Theorytext