Casimir Effect as a Test for Thermal Corrections and Hypothetical Long-Range Interactions

Details Casimir Effect as a Test for Thermal Corrections and Hypothetical Long-Range Interactions Casimir Effect as a Test for Thermal Corrections and Hypothetical Long-Range Interactions

2005-06-15

arxiv.org/abs/quant-ph/0506120v1

Int.J.Mod.Phys. A20 (2005) 2205-2221

Physics

Quantum Physics

17 pages, 7 figures, Sixth Alexander Friedmann International Seminar on Gravitation and Cosmology

Scientific paper

10.1142/S0217751X05024419

We have performed a precise experimental determination of the Casimir pressure between two gold-coated parallel plates by means of a micromachined oscillator. In contrast to all previous experiments on the Casimir effect, where a small relative error (varying from 1% to 15%) was achieved only at the shortest separation, our smallest experimental error ($\sim 0.5$%) is achieved over a wide separation range from 170 nm to 300 nm at 95% confidence. We have formulated a rigorous metrological procedure for the comparison of experiment and theory without resorting to the previously used root-mean-square deviation, which has been criticized in the literature. This enables us to discriminate among different competing theories of the thermal Casimir force, and to resolve a thermodynamic puzzle arising from the application of Lifshitz theory to real metals. Our results lead to a more rigorous approach for obtaining constraints on hypothetical long-range interactions predicted by extra-dimensional physics and other extensions of the Standard Model. In particular, the constraints on non-Newtonian gravity are strengthened by up to a factor of 20 in a wide interaction range at 95% confidence.

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