Vacuum induced torque between corrugated metallic plates

Details Vacuum induced torque between corrugated metallic plates Vacuum induced torque between corrugated metallic plates

2006-10-04

arxiv.org/abs/quant-ph/0610026v3

Europhys.Lett.76:822-828,2006

Physics

Quantum Physics

7 pages, 4 figures, to appear in Europhysics Letters. Technical problem with eps file for figure 4 was fixed

Scientific paper

10.1209/epl/i2006-10340-1

We study the torque arising between two corrugated metallic plates due to the interaction with electromagnetic vacuum. This Casimir torque can be measured with torsion pendulum techniques for separation distances as large as 1$\mu$m. It allows one to probe the nontrivial geometry dependence of the Casimir energy in a configuration which can be evaluated theoretically with accuracy. In the optimal experimental configuration, the commonly used proximity force approximation turns out to overestimate the torque by a factor 2 or larger.

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