The bare, or fundamental, electric and magnetic fields in a linear medium are identified. Through the energy relations for the bare fields, the electric permittivity is shown to combine the effects of the enhanced energy density and the polarization reaction field. The macroscopic Maxwell equations are modified to be consistent with the constitutive relations for the bare fields.
© 2005 Optical Society of America
(260.2110) Physical optics : Electromagnetic optics
Michael E. Crenshaw, "Field and energy relations in continuum electrodynamics," Opt. Lett. 30, 2305-2307 (2005)