2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/221557Starting from the Hamiltonian equation of motion in QCD, we identify an invariant light-front coordinate $ζ$ which allows the separation of the dynamics of quark and gluon binding from the kinematics of constituent spin and internal orbital angular momentum. The result is a single variable light-front Schrodinger equation for QCD which determines the eigenspectrum and the light-front wavefunctions of hadrons for general spin and orbital angular momentum. This light-front wave equation is equivalent to the equations of motion which describe the propagation of spin-$J$ modes on anti-de Sitter (AdS) space.4 pages. The limits of validity of the model are further discussed. To appear in Physical Review LettersHigh Energy Physics - PhenomenologyHigh Energy Physics - Theorytext