The causal approach proof for the equivalence of SDKP4 and SQED4 at tree-level

Beltrán J.; Pimentel B.M.; Soto D.E. · International Journal of Modern Physics A (2020) · DOI: 10.1142/s0217751x20500426

Resumen

The description of the electromagnetic interaction of charged spinless particles is usually formulated by the Scalar Quantum Electrodynamics. However, there is an alternative formulation given by the Duffin-Kemmer-Petiau theory: the Scalar DKP gauge theory. The proof of the equivalence between these two formulations has been discussed in many researches, but there is not yet a conclusive proof. In this paper, we initiate a complete proof in the framework of the Causal Perturbation theory, showing that both scalar formulations provide the same results for the differential cross-section at tree level.

Instituciones: Universidad Nacional de Ingeniería; Universidad Tecnológica del Perú