2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/56308We calculate the equal-time commutator of two fermionic currents within the framework of the 1+1 dimensional fully quantized theory, describing the interaction of massive fermions with a massive vector boson. It is shown that the interaction does not change the result obtained within the theory of free fermions.10 pages, REVTeX (tighten), added reference [13], supplemented contentHigh Energy Physics - Theorytext