2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/192622We study the Maxwell-Einstein theory in the framework of effective field theories. We show that the modified one-loop renormalizable Lagrangian due to quantum gravitational effects contains a Lee-Wick vector field as an extra degree of freedom in the theory. Thus gravity provides a natural mechanism for the emergence of this exotic particle.8 pages, 1 figure, typos fixedHigh Energy Physics - PhenomenologyHigh Energy Physics - Theorytext