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Calendar of Physics Talks Vienna
| Towards quantum source masses: gravitational coupling between millimeter-sized objects |
| Speaker: | Markus Aspelmeyer (Univ. Wien) |
| Abstract: | Beyond huge leaps in the exploration of extreme astrophysical systems Earth-bound experiments have continuously been refined for sensing gravity phenomena on laboratory scales i.e. in the low energy limit.
A yet unexplored frontier is the regime of microscopic source masses, which provides a natural path towards exploring the quantum nature of gravity. We recently demonstrated gravitational coupling between two ≈90 mg gold spheres with a systematic accuracy of 4E-11m/s² and a statistical precision of 4E-12m/s² in a miniaturized torsion balance experiment. We expect further improvements of the setup to enable the isolation of gravity as a coupling force for objects well below the Planck mass in the next iteration. These top down efforts strive to ultimately culminate in a purely gravitational coupling of quantum objects. |
| Date: | Thu, 07.01.2021 |
| Time: | 16:00 |
| Duration: | 60 min |
| Location: | ZOOM: https://zoom.us/j/92376135485?pwd=LzlUemhvcU5rL0hhZGxPOUVieDgxZz09 |
| Contact: | Piotr Chrusciel, David Fajman |
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