2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/201388We show by explicit computation that the recently discovered duality invariance of D=4 linearized gravity fails, already at first self-interacting, cubic, approximation of GR. In contrast, the cubic Yang-Mills correction to Maxwell does admit a simple deformed duality.11 PagesHigh Energy Physics - TheoryGeneral Relativity and Quantum Cosmologytext