The permittivity in the Huttner-Barnett theory of QED in dielectrics
Instituto de Física “Gleb Wataghin”,
Universidade Estadual de Campinas, UNICAMP - 13083-970, Campinas, São Paulo, Brazil
Accepted: 15 May 1998
Huttner and Barnett's interpretation of the function they call as the dielectric permittivity is crucial in practical applications of their theory. We show explicitly that is the permittivity but that their microscopic model can only describe certain types of permittivity.
PACS: 42.50.-p – Quantum optics / 03.70.+k – Theory of quantized fields
© EDP Sciences, 1998