Comment on: Non-null vectors transform into null vectors under Aharonov–Bohm electromagnetic Abelian gauge effects

In this paper, we will make some commentaries in addition to the content of a previous paper. We will complement statements made in this previous paper. Since the new tetrads were introduced in Einstein–Maxwell spacetimes, several novel physical predictions have been made. These predictions arise through the realization that the local electromagnetic gauge transformation of these tetrads generates for example the physical possibility to transform timelike and spacelike vectors into null vectors. We will show the mathematical details of this process and in addition we will present a physical setup for the concrete implementation of experiments. These processes are relevant regarding matter–antimatter annihilation for example.