engleski

Casimir force between planar magnetodielectrics

Using the properties of the macroscopic field operators appropriate for absorbing magnetodielectric systems [H. T. Dung et al., e-print quant-ph/0306028] and a compact form of the corresponding Green function for such a multilayer, we calculate the Casimir force between two magnetodielectric stacks of layers. The resulting expression for the force, in terms of the reflection coefficients of the stacks, is of the same form as for a dielectric system [M. S. Tomas, Phys. Rev. A 66, 052103 (2002)], however, the Fresnel coefficients are modified because of the different magnetic properties of the system in the present case.We use this result to numerically explore the attractive/repulsive force between two thick (semi-infinite) magnetodielectric slabs described by the Drude-Lorentz type permittivities epsilon_i(omega) and permeabilities mu_i(omega).

Casimir force; magnetodielectric multilayers; Green's functions

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