Casimir-Lifshitz Theory and Metamaterials

Details Casimir-Lifshitz Theory and Metamaterials Casimir-Lifshitz Theory and Metamaterials

2008-03-19

arxiv.org/abs/0803.2908v1

Phys. Rev. Lett. 100, 183602 (2008).

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevLett.100.183602

Based on a generalization of the Lifshiftz theory we calculate Casimir forces involving magnetodielectric and possibly anisotropic metamaterials, focusing on the possibility of repulsive forces. It is found that Casimir repulsion decreases with magnetic dissipation, and even a small Drude background in metallic-based metamaterials acts to make attractive a Casimir force that would otherwise be predicted to be repulsive. The sign of the force also depends sensitively on the degree of optical anisotropy of the metamaterial, and on the form of the frequency-dependency of the magnetic response.

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