The permittivity in the Huttner-Barnett theory of QED in dielectrics

S. M Dutra, K Furuya
1998 Europhysics letters  
PACS. 42.50−p -Quantum optics. PACS. 03.70+k -Theory of quantized fields. Abstract. -Huttner and Barnett's interpretation of the function they call ε(ω) as the dielectric permittivity is crucial in practical applications of their theory. We show explicitly that ε(ω) is the permittivity but that their microscopic model can only describe certain types of permittivity.
doi:10.1209/epl/i1998-00311-6 fatcat:saqoaci5tfbrvhkrngtkzme4cq