On the basis of the absoluteness of the vacuum light velocity and of the Lorentz transformations, the concept of a “measurable spatial velocity along the time axis” of a given observer can be introduced in a natural way, on the same footing of the “usual” velocities in the observer’s local three-space; full equivalence is thus established among all the coordinate directions, in the spirit of Re...

The Maxwell action on the brane is obtained through a RandallSundrum dimentional reduction. Also, the self dual and the topologically massive actions for vectors in three dimensions can be obtained from Randall-Sundrum dimentional reduction. In the Randall-Sundrum mechanism[1], gravitons and scalar fields in D = d + 1 dimensions described by the Einstein-Hilbert and Klein-Gordon actions respect...