Physics – Atomic Physics
Scientific paper
2007-08-11
Phys. Rev. A, v.77, N3, p.036102-(1-3) (2008).
Physics
Atomic Physics
5 pages, 1 figure, submitted to Physical Review A; corrections are made in accordance to referee's suggestions
Scientific paper
10.1103/PhysRevA.77.036102
Recently J.N. Munday and F. Capasso [Phys. Rev. A {\bf 75}, 060102(R) (2007); arXiv:0705.3793] claimed that they have performed a precision measurement of the Casimir force between a sphere and a plate coated with Au, both immersed in ethanol. The measurement results were claimed to be consistent with the Lifshitz theory. We demonstrate that the calculation of the Casimir force between the smooth bodies following the authors prescription has a discrepancy up to 25% with respect to authors result. We show also that the attractive electrostatic force only due to the surface potential differences was underestimated by a factor of 590 and the charge double layer interaction was not taken into account. All this leads to the conclusion that the results of this experiment are in fact uncertain.
Geyer Bodo
Klimchitskaya Galina L.
Mohideen Umar
Mostepanenko V. M.
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