dorsal/arxiv
View SchemaFulfillment of expectations of precise measurements of the Casimir force
| Authors | V. B. Svetovoy, M. V. Lokhanin |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0005085 |
| URL | https://arxiv.org/abs/quant-ph/0005085 |
Abstract
We compare theoretical expectations for the Casimir force with the results of precise measurements. The force is calculated at finite temperature for multilayered covering of the bodies using the Lifshitz theory. We argue that the dielectric function of the metallization has to be directly measured to reach the necessary precision in the force calculation. Without knowledge of this function one can establish a well defined upper limit on the force using parameters of perfect single-crystal materials. The force measured in the torsion pendulum experiment does not contradict to the upper limit. Importance of a thin Au/Pd layer in the atomic force microscope experiments is stressed. The force measured with the microscope is larger than the upper limit at small separations between bodies. The discrepancy is significant and reproduced for both performed measurements. The origin of the discrepancy is discussed. The simplest modification of the experiment is proposed allowing to make its results more reliable and answer the question if the discrepancy has any relation with the existence of a new force.
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"abstract": "We compare theoretical expectations for the Casimir force with the results of\nprecise measurements. The force is calculated at finite temperature for\nmultilayered covering of the bodies using the Lifshitz theory. We argue that\nthe dielectric function of the metallization has to be directly measured to\nreach the necessary precision in the force calculation. Without knowledge of\nthis function one can establish a well defined upper limit on the force using\nparameters of perfect single-crystal materials. The force measured in the\ntorsion pendulum experiment does not contradict to the upper limit. Importance\nof a thin Au/Pd layer in the atomic force microscope experiments is stressed.\nThe force measured with the microscope is larger than the upper limit at small\nseparations between bodies. The discrepancy is significant and reproduced for\nboth performed measurements. The origin of the discrepancy is discussed. The\nsimplest modification of the experiment is proposed allowing to make its\nresults more reliable and answer the question if the discrepancy has any\nrelation with the existence of a new force.",
"arxiv_id": "quant-ph/0005085",
"authors": [
"V. B. Svetovoy",
"M. V. Lokhanin"
],
"categories": [
"quant-ph"
],
"title": "Fulfillment of expectations of precise measurements of the Casimir force",
"url": "https://arxiv.org/abs/quant-ph/0005085"
},
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