Improved constraints on non-Newtonian forces at 10 microns

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dc.creatorGeraci, Andrew A.
dc.creatorSmullin, Sylvia J.
dc.creatorWeld, David M.
dc.creatorChiaverini, John
dc.creatorKapitulnik, Aharon
dc.date2008-02-16
dc.date2008-06-30
dc.date.accessioned2026-07-07T11:40:19Z
dc.date.available2026-07-07T11:40:19Z
dc.descriptionSeveral recent theories suggest that light moduli or particles in "large" extra dimensions could mediate macroscopic forces exceeding gravitational strength at length scales below a millimeter. Such new forces can be parameterized as a Yukawa-type correction to the Newtonian potential of strength $α$ relative to gravity and range $λ$. To extend the search for such new physics we have improved our apparatus utilizing cryogenic micro-cantilevers capable of measuring attonewton forces, which now includes a switchable magnetic force for calibration. Our most recent experimental constraints on Yukawa-type deviations from Newtonian gravity are more than three times as stringent as our previously published results, and represent the best bound in the range of 5 - 15 microns, with a 95 percent confidence exclusion of forces with $|α| > 14,000$ at $λ$ = 10 microns.
dc.description12 pages, 9 figures, accepted for publication in PRD. Minor changes, replaced and corrected Figs 4,5,8
dc.identifierhttps://arxiv.org/abs/0802.2350
dc.identifierhttp://arxiv.org/abs/0802.2350
dc.identifierPhys.Rev.D78:022002,2008
dc.identifierdoi:10.1103/PhysRevD.78.022002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200220
dc.subjectHigh Energy Physics - Experiment
dc.subjectAstrophysics
dc.subjectOther Condensed Matter
dc.subjectHigh Energy Physics - Phenomenology
dc.titleImproved constraints on non-Newtonian forces at 10 microns
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