2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/17105We argue that recently measured downward dispersion of the neutron resonance peak in cuprate superconductors is naturally explained if the resonance is viewed as a spin-1 collective mode in a d-wave superconductor. The reduction of the resonant frequency away from the antiferromagnetic wave vector is a direct consequence of the momentum dependence of the d-wave superconducting gap. When the magnetic correlation length becomes large, the dispersion should become magnon-like, i.e., curve upwards from (pi,pi).4 pages, 3 inline PostScript figures. Added referencesSuperconductivityStrongly Correlated Electronstext