2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/54172The ambiguity in the calculations of one-loop counterterms by the background field method in nonrenormalizable theories of gravity is discussed. Some examples of such ambiguous calculations are given. The non-equivalence of the first and second order formalism in the quantum gravity is shown.21 pages in LATEXHigh Energy Physics - TheoryGeneral Relativity and Quantum Cosmologytext