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arXiv · 0905.0448

Three-body Casimir effects and non-monotonic forces

P. Rodriguez-Lopez·S. J. Rahi·T. Emig
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Abstract

Casimir interactions are not pair-wise additive. This property leads to collective effects that we study for a pair of objects near a conducting wall. We employ a scattering approach to compute the interaction in terms of fluctuating multipoles. The wall can lead to a non-monotonic force between the objects. For two atoms with anisotropic electric and magnetic dipole polarizabilities we demonstrate that this non-monotonic effect results from a competition between two- and three body interactions. By including higher order multipoles we obtain the force between two macroscopic metallic spheres for a wide range of sphere separations and distances to the wall.

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P. Rodriguez-Lopez, S. J. Rahi, T. Emig. 2009-05-04. Three-body Casimir effects and non-monotonic forces. https://doi.org/10.1103/physreva.80.022519

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