  Recent progress on nonlinear sigma models on de Sitter background has
permitted the resummation of large inflationary logarithms by combining a
variant of Starobinsky's stochastic formalism with a variant of the
renormalization group. We reconsider single graviton loop corrections to the
photon wave function, and to the Coulomb potential, in light of these
developments. Neither of the two 1-loop results have a stochastic explanation,
however, the flow of a curvature-dependent field strength renormalization
explains their factors of $\ln(a)$. We speculate that the factor of $\ln(Hr)$
in the Coulomb potential should not be considered as a leading logarithm
effect.
