Sub-mm tests of the gravitational inverse-square law
E. G. Adelberger (for the Eot-Wash group)
TL;DR
This paper reports precise sub-millimeter tests of gravity, finding no deviations from the inverse-square law and setting new upper limits on the size of potential extra dimensions.
Contribution
It provides updated experimental constraints on short-range modifications to gravity and the size of extra dimensions, improving previous limits.
Findings
No evidence for short-range Yukawa interactions.
Upper limit of 200 micrometers on extra dimension size.
150 micrometers limit for two large extra dimensions.
Abstract
Sub-mm tests of the gravitational inverse-square law are interesting from several quite different perspectives. This paper discusses work by the Eot-Wash group performed since the publication of our initial result in February 2001. We find no evidence for short-range Yukawa interactions. Our results provide an upper limit of 200 micrometers on the size of the largest ``extra'' dimension, and for the unification scenario with 2 large extra dimensions, set an upper limit of 150 micrometers on the size of those dimensions.
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