2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/98414An internal inconsistency with mutually exclusive Hamiltonians and the corresponding mutually exclusive states HH and H-antiH suffices to doubt the usefulness of ab initio calculations for H-antiH based on 1927 Heitler-London theory. Removing this inconsistency in a generic way invalidates this theory but the compensation is that problems with antihydrogen are removed.4 pages, short version of a long paper in Eur Phys J D, Online First (2005), submitted to Phys Rev LettGeneral Physicstext