Lehnert equations 0 electrodynamics

The Lehnert equations are consistent [10] with the continuity equation (428) of U(l) electrodynamics. Using the vacuum continuity equation in Lehnert s vacuum Coulomb law, we find... 

More than a century later, Lehnert [7] introduced and developed [7-10] the concept of vacuum charge on the classical level, and showed [7-10] that this concept leads to advantages over the Maxwell-Heaviside equations in the description of empirical data, for example, the problem of an interface with a vacuum [7-10,15]. The introduction of a vacuum charge leads to axisymmetric vacuum solutions akin to the B(3> vacuum component of 0(3) electrodynamics... 

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