2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/56580We compare Schwinger and complex powers methods to construct regularized fermion currents. We show that although both of them are gauge invariant they not always yield the same result.10 pages, 1 figureMathematical PhysicsHigh Energy Physics - TheoryOn gauge invariant regularization of fermion currentstext