Scalar-Longitudinal Modes of Extended Electrodynamics in Perfectly Conducting Waveguides and Divergence Cleaning Interpretation

Natan Rentzber, Jacob Howard, Fernando Minotti +2

Extended electrodynamics keeps the scalar combination $C=\nabla \cdot \mathbf{A}+{\mu }_0{\epsilon }_0\partial \Phi /\partial t$ as a dynamical field rather than imposing the Lorenz gauge cond…