Gravitational coupling of microscopic source masses: challenges for future quantum Cavendish experiments
Event Date:
2021-03-10T11:00:00
2021-03-10T12:00:00
Event Location:
Connect via Zoom
Speaker:
Markus Aspelmeyer, University of Vienna
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Intended Audience:
Graduate
Local Contact:
Miriam Cabero
Event Information:
No experiment today provides evidence that gravity requires a quantum description. It has been suggested that one can at least exclude the possibility for semiclassical gravity by performing an experiment whose outcome cannot be explained by a purely classical source mass configuration. It turns out that such “quantum Cavendish” experiments are challenging, to say the least. I highlight some of the practical aspects of this challenge using the concrete example of our recent measurement of the gravitational field of a 1mm gold sphere, the smallest source mass to date in table-top gravity experiments.
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2021-03-10T11:00:00
2021-03-10T12:00:00
Gravitational coupling of microscopic source masses: challenges for future quantum Cavendish experiments
Event Information:
No experiment today provides evidence that gravity requires a quantum description. It has been suggested that one can at least exclude the possibility for semiclassical gravity by performing an experiment whose outcome cannot be explained by a purely classical source mass configuration. It turns out that such “quantum Cavendish” experiments are challenging, to say the least. I highlight some of the practical aspects of this challenge using the concrete example of our recent measurement of the gravitational field of a 1mm gold sphere, the smallest source mass to date in table-top gravity experiments.
Event Location:
Connect via Zoom