TY - JOUR
T1 - Constraints on Yukawa-type deviations from Newtonian gravity at 20 microns
AU - Smullin, S. J.
AU - Geraci, A. A.
AU - Weld, D. M.
AU - Chiaverini, J.
AU - Holmes, S.
AU - Kapitulnik, A.
PY - 2005/12/15
Y1 - 2005/12/15
N2 - Recent theories of physics beyond the standard model have predicted deviations from Newtonian gravity at short distances. In order to test these theories, we have a built an apparatus that can measure attonewton-scale forces between gold masses separated by distances on the order of 25μm. A micromachined silicon cantilever was used as the force sensor, and its displacement was measured with a fiber interferometer. We have used our measurements to set bounds on the magnitude α and length scale λ of Yukawa-type deviations from Newtonian gravity; our results presented here yield the best experimental limit in the range of λ=6-20μm.
AB - Recent theories of physics beyond the standard model have predicted deviations from Newtonian gravity at short distances. In order to test these theories, we have a built an apparatus that can measure attonewton-scale forces between gold masses separated by distances on the order of 25μm. A micromachined silicon cantilever was used as the force sensor, and its displacement was measured with a fiber interferometer. We have used our measurements to set bounds on the magnitude α and length scale λ of Yukawa-type deviations from Newtonian gravity; our results presented here yield the best experimental limit in the range of λ=6-20μm.
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U2 - 10.1103/PhysRevD.72.122001
DO - 10.1103/PhysRevD.72.122001
M3 - Article
AN - SCOPUS:29744448154
SN - 1550-7998
VL - 72
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 12
M1 - 122001
ER -