2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/201096We solve the effective Dirac equation for massless fermions during inflation in the simplest gauge, including all one loop corrections from quantum gravity. At late times the result for a spatial plane wave behaves as if the classical solution were subjected to a time dependent field strength renormalization of Z_2(t) = 1 - \frac{17}{4 π} G H^2 \ln(a) + O(G^2). We show that this also follows from making the Hartree approximation, although the numerical coefficients differ.31 pages, Latex 2epsilon, 1 figure, version 3 has updated referencesGeneral Relativity and Quantum CosmologyHigh Energy Physics - Theorytext