Abstract
r 3 divergence at the origin. To incorporate these microscopic interactions local-field corrections are introduced. The approach is still macroscopic in nature, but the electric field at the radiating dipole, the local field, is different from the macroscopic field to incorporate local interactions. Macroscopic derivations of the local-field correction often imply the use of a cavity around the radiating dipole. The specific choice of the cavity is subtle matter [10], greatly complicating the interpretation of these models. Two limiting cases for a local-field model have been proposed. The empty-cavity model [11], in which the atom is inside a real empty spherical cavity in the dielectric, leads to
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