2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/27865A consistent perturbation theory expansion is presented for phase ordering kinetics in the case of a nonconserved scalar order parameter. At lowest order in this formal expansion one obtains the theory due to Ohta, Jasnow and Kawasaki (OJK). At next order, worked out explicitly in d dimensions, one has small corrections to the OJK result for the nonequilibrium exponent $λ$ and the introduction of a new exponent $ν$ governing the algebraic component of the decay of the order parameter scaling function at large scaled distances.14 pages, LaTexStatistical Mechanicstext