2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/54853The dymamical chiral symmetry breaking in higher- derivative quantum gravity has been investigated on the flat background. The Schwinger- Dyson equations numerical solutions have been found in the ladder approximation. Both two- and four- dimensional cases have been considered. The dymamical fermion mass generation accompanied by the second- order phase transition has been shown to take place in a different gauges.19 pages, 6 figures, LaTeX, submitted to Mod. Phys. Lett. AHigh Energy Physics - Theorytext