Physics colloquium - PUC-Rio - Prof. Giorgio Gratta, Stanford University

August 12, 2021
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Measuring gravity at micron scale and other fun tricks with optically levitated microspheres

Prof. Giorgio Gratta, Stanford University

I will describe a new program of measurements in fundamental physics using optically levitated dielectric microspheres. The focus of the talk will be the recently completed first search for new, gravity-like interactions at micron scale using this novel technique. I will also show an array of other results, including searches for millicharged particles, Chameleon fields and techniques to manipulate the various degrees of freedom of the trapped microspheres.
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Thank you Giorgio, for this excellent talk!