Kavli Affiliate: Giorgio Gratta
| First 5 Authors: Gautam Venugopalan, Clarke A. Hardy, Kenneth Kohn, Yuqi Zhu, Charles P. Blakemore
| Summary:
The search for new gravity-like interactions at the sub-millimeter scale is a
compelling area of research, with important implications for the understanding
of classical gravity and its connections with quantum physics. We report
improved constraints on Yukawa-type interactions in the $10,mathrm{mu m}$
regime using optically levitated dielectric microspheres as test masses. The
search is performed, for the first time, sensing multiple spatial components of
the force vector, and with sensitivity improved by a factor of $sim 100$ with
respect to previous measurements using the same technique. The resulting upper
limit on the strength of a hypothetical new force is $10^7$ at a Yukawa range
$lambdasimeq 5;mu$m and close to $10^6$ for $lambda gtrsim 10;mu$m.
This result also advances our efforts to measure gravitational effects using
micrometer-size objects, with important implications for embryonic ideas to
investigate the quantum nature of gravity.
| Search Query: ArXiv Query: search_query=au:”Giorgio Gratta”&id_list=&start=0&max_results=3