New constraints for non-Newtonian gravity in nanometer range from the improved precision measurement of the Casimir force
Abstract
We obtain constraints on non-Newtonian gravity following from the improved precision measurement of the Casimir force by means of atomic force microscope. The hypothetical force is calculated in experimental configuration (a sphere above a disk both covered by two metallic layers). The strengthenings of constraints up to 4 times comparing the previous experiment and up to 560 times comparing the Casimir force measurements between dielectrics are obtained in the interaction range 5.9 nm≤λ≤ 115 nm. Recent speculations about the presence of some unexplained attractive force in the considered experiment are shown to be unjustified.
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