The Casimir effect is considered for a wedge with opening angle alpha, with perfectly conducting walls, when the interior region is filled with an isotropic and nondispersive medium with permittivity epsilon and permeability mu. The electromagnetic energy-momentum tensor in the bulk is calculated, together with the surface stress on the walls. A discussion is given on the possibilities for measuring the influence of the medium, via the Casimir-Polder force. (C) 2001 Academic Press. [References: 11]
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