Unified approach to QED in arbitrary linear media

Details Unified approach to QED in arbitrary linear media Unified approach to QED in arbitrary linear media

2006-12-18

arxiv.org/abs/quant-ph/0612136v1

Physics

Quantum Physics

22 pages, no figures

Scientific paper

10.1103/PhysRevA.75.053813

We give a unified approach to macroscopic QED in arbitrary linearly responding media, based on the quite general, nonlocal form of the conductivity tensor as it can be introduced within the framework of linear response theory, and appropriately chosen sets of bosonic variables. The formalism generalizes the quantization schemes that have been developed previously for diverse classes of linear media. In particular, it turns out that the scheme developed for locally responding linear magnetodielectric media can be recovered from the general scheme as a limiting case for weakly spatially dispersive media. With regard to practical applications, we furthermore address the dielectric approximation for the conductivity tensor and the surface impedance method for the calculation of the Green tensor of the macroscopic Maxwell equations, the two central quantities of the theory.

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