Types of quantum field thories
Specifically, it models
the Lorentz force exerted by the electromagnetic field on a charged particle as the contraction of that 2-form with the tangent vector of the trajectory of the particle.
Mathematically, special relativity is essentially the theory of Minkowski space as a pseudo-Riemannian manifold, hence equipped with the constant metric tensor which at each point is the bilinear form with signature or else (depending on convention). The null-vectors in this metric characterize the speed of light. The linear isometries of this metric are the Lorentz transformations and the fact that with the Minkowski metric these also preserve, hence, null rays is the mathematical model for the famous phenomenological observation that “the speed of light is the same in all reference systems”.