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Unified approach to QED in arbitrary linear media
Christian Raabe, Stefan Scheel, Dirk-Gunnar Welsch
abstract: 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.
- oai_identifier:
- oai:arXiv.org:quant-ph/0612136
- categories:
- quant-ph
- comments:
- 22 pages, no figures
- doi:
- 10.1103/PhysRevA.75.053813
- arxiv_id:
- quant-ph/0612136
- created:
- 2006-12-18
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