2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/96105The problem of coupling between spin and torsion is analysed from a Lyra's manifold background for scalar and vector massive fields using the Duffin-Kemmer-Petiau (DKP) theory. We found the propagation of the torsion is dynamical, and the minimal coupling of DKP field corresponds to a non-minimal coupling in the standard Klein-Gordon-Fock and Proca approaches. The origin of this difference in the couplings is discussed in terms of equivalence by surface terms.Preprint version 7 pages. Talk presented in the Fourth International Winter Conference on Mathematical Methods in Physics, 9 to 23 August 2004, Rio de Janeiro, BrazilHigh Energy Physics - TheoryGeneral Relativity and Quantum CosmologyMathematical Physicstext