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Saturation effects ...
Abstract
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- We address three different problematic Casimir experiments in this work. The first is the classical Casimir force measured between two metal half-spaces; here in the form of the Casimir pressure measurement between a gold sphere and a gold plate as performed by Decca et al. (Phys. Rev. D, 75 (2007) 077101); theory predicts a large negative thermal correction, absent in the high-precision experiment. The second experiment is the measurement of the Casimir force between a metal plate and a laser irradiated semiconductor membrane as performed by Chen et al. (Phys. Rev. B, 76 (2007) 035338); the change in force with laser intensity is larger than predicted by theory. The third experiment is the measurement of the Casimir force between an atom and a wall in the form of the measurement by Obrecht et al. (Phys. Rev. Lett., 98 (2007) 063201) of the change in oscillation frequency of a Rb-87 Bose-Einstein condensate trapped to a fused silica wall; the change is smaller than predicted by theory. We show that saturation effects can explain the discrepancies between theory and experiment observed in all these cases.
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