2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/52961We construct field theory on noncommutative $κ$-Minkowski space-time. Having the Lorentz action on the noncommutative space-time coordinates we show that the field lagrangian is invariant. We show that noncommutativity requires replacing the Leibnitz rule with the coproduct one.11 pagesHigh Energy Physics - TheoryLorentz invariance of scalar field action on $κ$-Minkowski space-timetext