Casimir manipulations: The orientation dependence of fluctuation-induced forces

Details Casimir manipulations: The orientation dependence of fluctuation-induced forces Casimir manipulations: The orientation dependence of fluctuation-induced forces

2008-11-10

arxiv.org/abs/0811.1597v1

Phys.Rev.A79:054901,2009

Physics

Condensed Matter

Statistical Mechanics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevA.79.054901

The Casimir interaction between two objects, or between an object and a plane, depends on their relative orientations. We make these angular dependences explicit by considering prolate or oblate spheroids. The variation with orientation is calculated exactly at asymptotically large distances for the electromagnetic field, and at arbitrary separations for a scalar field. For a spheroid in front of a mirror, the leading term is orientation independent, and we find the optimal orientation from computations at higher order.

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