The Vacuum is a Dielectric Medium According to the Maxwell Theory; Its Basic Field is the Electric Vector Potential Z

We discovered that, according to the Maxwell theoryMaxwell theory, the vacuumVacuum should behave like a dielectric mediumDielectric medium. A major contribution of MaxwellMaxwell, J. C. was his introduction of the electric displacementElectric displacement D into electrodynamics. Maxwell’sMaxwell, J. C. theory of light propagation required that the vacuumVacuum must behave like a dielectric mediumDielectric medium. If the vacuumVacuum is an empty space, D must automatically equal to zero. It will then be impossible to derive the waveWave equation of light. The waveWave function of a free particleFree particle represents a local movement of the vacuum mediumVacuum medium. Since the vacuumVacuum behaves as a dielectric mediumDielectric medium, the physical parameter representing the displacement of the vacuum mediumVacuum medium should be the electric displacementElectric displacement D instead of the magnetic flux B. By applying the Helmholtz decompositionHelmholtz decomposition theorem, we find that the dynamic variation of D can be characterized by a newly defined electric vector potentialElectric vector potential called “Z”. We showed that the variation of Z follows a waveWave equation similar to the waveWave equation of light.